CN110786307A

CN110786307A - Multi-row scanning and spraying component for green Chinese onion

Info

Publication number: CN110786307A
Application number: CN201911305268.5A
Authority: CN
Inventors: 徐元章
Original assignee: Fuzhou Feng Rui Ecological Technology Co Ltd
Current assignee: Fuzhou Feng Rui Ecological Technology Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-02-14

Abstract

The invention discloses a multi-row scanning and spraying assembly for green Chinese onion, wherein a power sprayer is matched with a special spraying assembly to perform scanning and spraying by clamping and spraying left and right side surfaces of a green Chinese onion row in multiple groups in a three-dimensional way, the position between two (or more) groups of spray heads is kept relatively still and consistent with the advancing direction of an operator during spraying operation, and the advancing track of the spray heads for scanning and spraying operation is superposed with the central line of the straight line or curve-shaped green Chinese onion row; the spray rod can adopt a thickened and lengthened structure, the number of the upright rods, the upright rod tee joint, the left spray head and the right spray head can be matched according to the number of the green Chinese onion rows required to be scanned simultaneously, the total length of the spray rod reaches 20-30 m, and the spray rod is suspended and fixed at the rear part of the suspension type drag spray machine; the scanning pesticide spraying assembly saves water and pesticide, improves the uniformity of sprayed pesticide droplets and the target hitting rate, and reduces the pollution and waste of pesticide to the environment.

Description

Multi-row scanning and spraying component for green Chinese onion

Technical Field

The invention relates to a scanning and pesticide spraying assembly capable of efficiently, accurately, uniformly, universally and conveniently spraying more than two rows of green Chinese onion cultivation rows, in particular to a multi-row scanning and pesticide spraying assembly for green Chinese onions, and belongs to the technical field of agricultural plant protection and pesticide spraying.

Background

The level of agricultural mechanization in hilly and mountainous areas has long lagged behind flat dam areas on plain. Although the development is faster in recent years, the short plate is still the biggest short plate of the agricultural organization in China. The pesticide variety, the pesticide using technology and the plant protection machine are three major factors in the plant disease and insect pest prevention and control work, and the importance of selecting the pesticide variety is emphasized in agricultural production at home and abroad for many years, while the importance of the pesticide using technology and the plant protection machine is ignored: due to the pesticideThe technological progress has made that the insecticidal activity of the recent deltamethrin pesticide is improved by 1600 times compared with that of DDT pesticide in the fortieth of the twentieth century, but the dosage of the field effective component of the former pesticide is only 1/50 of the latter pesticide, and the problems of labor consumption, pesticide consumption, water consumption, poor control effect and the like exist in the use process of the pesticide. The modern foreign pesticide application technology and the matched medical instruments thereof develop along the aspects of accuracy, low capacity, high concentration, targetability and automation, advanced 'accurate spraying' technology is researched and applied in the last 70 th century, for example, developed countries such as the United states select different spraying technologies and medical instruments according to different crop varieties and different growth stages thereof, the pesticide application work is standardized, team occupation and field standardization are managed, and 'very specialized, all legal, machine and tool modernization and index internationalization' are achieved. The agricultural plant protection mechanical equipment in China is in a relatively laggard state, a systematic subject is not formed, technical equipment is lacked, except that agricultural pesticide spraying mechanization is already carried out in plain areas in the north, the agricultural pesticide spraying mechanization level in hilly and mountainous areas in the south in China is still weak, farmers or planting bases which cannot realize large-scale plant protection mechanization often purchase a pesticide spraying machine and a spray nozzle thereof to package and spray all crops all the year round, the pesticide cannot be applied to the symptoms aiming at the agronomic characters or the cultivation characteristics displayed in different crops or different crop growth stages, one plant protection machine is only suitable for the protection of a plurality of crops due to the limitation of the structure and configuration of the plant protection machine, the conventional pesticide spraying method of the crops such as the green Chinese onions is that one spray nozzle is used for spraying pesticide to and fro and back and forth on the left side, the upper side and the right side of a green Chinese onion plant row, the pesticide cost is high in, the problems of heavy spraying and missed spraying are difficult to avoid, and the prevention effect is poor, so that the reuse, abuse and indiscriminate use of pesticides are caused. According to measurement and calculation, only 20-30% of pesticide is sprayed on a crop target by the conventional pesticide spraying method, only 1% of pesticide really plays a role in prevention and control, other pesticide liquid is completely lost into the environment to cause pollution, a series of problems and consequences such as environmental pollution, pest resistance and rampant regeneration are generated, the improvement of the scientific and technological level of 'pesticide use technology' and 'plant protection machinery' has extremely important significance and great potential for the current agricultural production, and therefore the method is provided by the competent departments in ChinaThe requirement that the reduction and the synergism are required for the application of the pesticide is met. Among the methods of using pesticides, spraying is the most common method, and among the divided spraying methods, targeted spraying is currently a relatively reliable and technically mature method. Under the limitation of the current technical equipment conditions, crops with different agronomic characters are usually selected and matched with two sprayers for spraying, the static spraying width of a sprayer is only fixed, when an operation target is larger than the static spraying width of the sprayer, the sprayer needs to swing left and right in a reciprocating mode to increase the spraying width while moving, the movement mode of the sprayer is a composite type movement with the functions of reciprocating and periodically changing directions and forward moving, the distance of the operator in the back-and-forth operation on a target area is reduced, the sedimentation density of a medicine in the target area is controlled by depending on two variables of the left-and-right swinging speed of the sprayer and the moving speed of a machine tool, the sprayer is called as a swinging spraying method for convenience, the sprayer is called as a swinging spraying sprayer, and the relationship between the movement track, the direction and the target width is shown in figure 1. As can be seen from FIG. 1, in order to better search the intrinsic regularity of the zigzag swinging spraying method and facilitate the explanation, assuming that the left and right swinging amplitudes of the operator are equal, the forward speeds of the operator and the spray head are uniform, the target area width ef (swinging spraying amplitude) of the single operation, the static spraying amplitudes xy, AB and MN of the swinging spraying spray head are the intersecting lines of the spraying amplitude of the swinging spraying spray head on the upper side of the swinging spraying amplitude, and AB and MN are the intersecting lines of the spraying amplitude of the swinging spraying spray head on the lower side of the swinging spraying amplitude, for the convenience of explanation, only S selected by the dashed parallelogram on the left side of FIG. 1 is selected_ANanThe regional target is used as a research part for measurement and calculation, and C in the figure 1 is an area S_abGHeavy spray zone and constant value, C = C₁=C₂=C₃=C₄L is the area S_bagAnd constant value, L = L₁=L₂D is a single spray zone (target zone sprayed only once) and is constant, D = D₁=D₂=D₃According to the basic definition and principle of geometry with respect to area, then

Total area S of target region_ANan= S_BGM+S_bqm+S_ABg+S_abG+S_MNq+S_mnQ+S_agBG+S_bGMq+S_mqNQ

= L₁+L₂+C₁+C₂+C₃+C₄+D₁+D₂+D₃

=2S_BGM+3S_agBG+4S_ABg=2L+4C+3D

According to the formula S_ANanAmong the regions, the region sprayed one time by the oscillating spray method has S in total_agBG+S_bGMq+S_mqNQ= D₁+D₂+D₃=3S_agBG=3D

The spray head is at S_ANanThe area sprayed by the heavy spray area in the area has 2S_ABg+2S_abG+2S_MNq+2S_mnQ=2C₁+2C₂+2C₃+2C₄=8S_ABg

S_ANanThe region has S in common in the region of the missing nozzle_BGM+S_bqm=L₁+L₂=2S_BGM

As can be seen from figure 1, the heavy spray area is inevitable when the swing spraying method is used for spraying pesticide, the missed spray area is difficult to avoid in the countless times of spraying pesticide in the reciprocating swing spraying method operation of a field, the smaller the missed spray area is, the larger the heavy spray area is, the smaller the area for spraying single time is, until the bqm three-point coincidence is that the R and BGM three-point coincidence is R, the missed spray area and the single spray area are not available, and S is the time when S is used for spraying pesticide_ANanThe regions are all divided into 2C₁+2C₂+2C₃+2C₄Four re-spraying areas; in the travel trajectory of the reciprocating oscillating spray head of fig. 1: the static spraying amplitude xy (namely the distance between the aA and the bB) of the reciprocating swinging spraying nozzle is small, in order to reduce the times of spraying the medicine back and forth, the nozzle is required to be moved to swing the spraying target to increase the width ef (namely the distance between the AB and the AB) of the target area of single operation of swinging spraying while reciprocating the spraying nozzle back and forth periodically, the moving track of the nozzle is a curve in a zigzag shape (also called a folding ruler type), the period of a left-right reciprocating swinging spraying method is required to ensure that the point B coincides with the point M and the point B coincides with the point M so as not to generate the area S_BGMThe "blow-out region" L of (1) but it is difficult to eliminate the area S in any operation_ABgThe "re-spraying zone" C, i.e. having an area S_ABgThe area C of the re-spraying area is sprayed for 2 times in the period of a reciprocating swing spraying method, and the area is S_BGMThe area of the 'missed spray area' L is infinitely small until bqm points coincide and BGM points coincide to form the standard swinging spray state of fig. 3, the defect that the 'missed spray area' L influences the prevention effect in the conventional left-right reciprocating spray method can be overcome, but the area of the're-spray area' C reaches the maximum at the moment, and as a result, except for the initial and final half spray amplitude, other spray target areas are sprayed with the pesticide twice by the reciprocating swinging spray nozzles in opposite directions, so that the requirements of comprehensive prevention and treatment and no missed spray can be met. In summary, the technical characteristics of the swing spraying method are as follows:

the static spray amplitude of the reciprocating swinging spray head is smaller than the target width of single operation;

the sprayer swings left and right in a reciprocating manner to increase the spraying amplitude while moving, the movement mode of the sprayer is a composite movement with the functions of back-and-forth reciprocating periodic turning and forward moving, and the moving track of the sprayer is a folding ruler type (also called a zigzag curve);

controlling the sedimentation density of the medicine in a target area by depending on two variables of the left-right swinging speed of the spray head and the advancing speed of a machine tool (or an operator);

the technology is difficult to avoid the problems of re-spraying and missing spraying, and in order to ensure that the target area cannot be missed, the spray head must enter and return in multiple rows in the target area of unit areaThe number of the spraying passes of more than 2 times, namely the total area of the employment, the medication, the water and the spraying needs to be increased by one time (one time of the re-spraying) to eliminate the problem of the missed spraying of the swing spraying method, namely the phenomenon that the reciprocating swing spraying method needs to re-spray the target for the full spraying. The swinging spraying method inevitably has a heavy spraying area and an unavoidable leaking spraying area, the uniformity and the density of the sprayed medicament are difficult to control, and the control effect is poor, so the spraying efficiency of the reciprocating swinging spraying nozzle with low efficiency is reduced by times and the effect is poor due to the phenomenon, and as the agronomic characters and characteristics of plants such as plant types, height, leaf types, leaf potential, cultivation directions, conditions of land and field are varied, a spraying device cannot adapt to efficient, accurate, convenient and economical spraying of all kinds of plants, so that the research and development of efficient and accurate spraying methods and machines aiming at different agronomic characters and avoiding heavy spraying and leaking spraying are urgently needed at home and abroad.

Disclosure of Invention

In view of the shortcomings of the existing backward technical equipment for wrapping and spraying all crops by a machine and the conventional swing spraying method, the invention aims to provide a special spraying assembly for a new method for scanning and spraying the pesticide on the scallion crops, locally changes the backward situation that a sprayer wraps and sprays various crops, renovates the current situation that a single spray head continuously changes the position and the angle on the left side, the upper side and the right side of a scallion cultivation row and continuously changes the position and the angle, thereby having complex and low-efficiency pesticide spraying operation, and provides a scallion multi-row scanning and spraying assembly for scanning and spraying the pesticide on the vertical agricultural crops, which is efficient and accurate and can not be re-sprayed or leaked to the vertical agricultural crops.

According to the relatively laggard conditions of pesticide application technologies and plant protection machinery at home and abroad, the invention researches the characteristics of ever-changing plant agronomic characters, and provides a new technology and machine tool of a stepless amplitude-change scanning spraying method (the specification is named for convenience and is different from the conventional swinging spraying method, the same below) aiming at the defects of the conventional swinging spraying method, as shown in figures 2 and 3, as can be seen from figure 2, the static spraying amplitude of a nozzle during spraying by the scanning spraying method is larger than the width of an operation target, and the nozzle and the machine tool move in the same direction and only do unidirectional motion; as can be seen from fig. 3, the spraying width of the scanning nozzle can be adjusted correspondingly with the width of the operation target, which matches the requirement that the spraying width of the scanning spraying is slightly larger than the operation target and the nozzle only moves in one direction.

The stepless amplitude-variable scanning pesticide spraying method is technically characterized in that:

the static spray amplitude of the spray head is more than or equal to the pesticide receiving surface of the crop target, and the spray head can be swung to and fro left and right to spray pesticide on the pesticide receiving surface of the crop in a full-covering manner;

the movement direction of the spray head is consistent with the advancing direction of the machine tool (or an operator), the spray head moves in a single direction, and the advancing track of the spray head for the scanning and spraying operation is linear;

the density deposition of the fog drops on the target by the spray head is controlled by the variable of the travel speed of the spray head and a machine tool (or an operator), so that the uniform deposition is easy to realize;

the operation area of the spray head in the process of spraying is larger than or equal to the operation target area, and the target area after spraying is only needed to be sprayed once in the process of spraying, so that re-spraying and missing spraying are avoided; the stepless amplitude-variable scanning spraying method overcomes all the defects of the conventional swinging spraying method, can ensure that the target is scanned and sprayed efficiently, accurately and uniformly in the whole area, and saves manpower, pesticides and water sources.

The invention aims to realize that the scallion multi-row scanning and spraying assembly distributes high-pressure liquid medicine output from a conventional spraying machine to a plurality of groups of left and right side spray heads of a plurality of rows of scallion cultivation rows after being controlled by a liquid medicine switch, the high-pressure liquid medicine is aligned to form wrapping spray on the left and right sides of each row of scallion cultivation rows respectively, the static spray amplitude of the left and right side spray heads is larger than the plant height of the scallion, so that the left and right spray heads form cover-type fog drop coverage on the whole scallion plant, the spray heads do not need to be swung, the relative spatial positions of the left and right spray heads to the scallion cultivation rows are kept unchanged, an operator controls the scallion multi-row scanning and spraying assembly, controls the fog drop coverage density of a target of the scallion cultivation rows by the traveling speed of the operator, all traveling tracks participating in the scanning and spraying operation spray heads are linear (or curved), and realizes efficient, accurate and uniform cover-type scanning and spraying of the, the control effect is improved, and the problems of pesticide consumption, water consumption, labor consumption, heavy spraying, missed spraying and the like of the conventional pesticide spraying method are avoided.

The scanning spray assembly adopted by the invention is essentially different from the conventional swinging spray method in that: the static spray amplitude of a spray head of the swing spraying method is smaller than the pesticide receiving surface of a crop target, in order to cover the whole target, the spray head must be swung to and fro left and right to swing the pesticide receiving surface of the crop, the movement direction of the spray head is inconsistent with the advancing direction of an operator and belongs to compound movement, the advancing track of the spray head is a folding ruler type curve or even a complex arc curve, and the targets sprayed in a large area must be swung to and fro left and right countless times, so that the problems of pesticide consumption, water consumption, labor consumption, re-spraying, missed spraying and the like which cannot be avoided by the conventional spraying method are caused; the scanning and spraying method is characterized in that the static spraying amplitude of the spray head is larger than or equal to the pesticide receiving surface of the crop target, the spray head can be used for full-coverage spraying of the pesticide receiving surface of the crop without swinging back and forth left and right, the moving direction of the spray head is consistent with the advancing direction of an operator and belongs to unidirectional movement, the advancing track of the spray head for scanning and spraying operation is linear, and the scanning and spraying method can ensure that the target is scanned and sprayed with pesticide efficiently, accurately and uniformly in a surrounding way, so that manpower, pesticide and water sources are saved.

The invention has the characteristics and advantages that: the common stretcher type motor-driven spraying machine, the knapsack liquid pump spraying machine or the knapsack electric spraying machine (hereinafter referred to as the power spraying machine) is matched with a special spraying assembly to carry out the multi-row scanning spraying of the green Chinese onions, and a control switch of the spraying machine is arranged on a handle and is used for controlling the pressurizing operation or the stopping of the spraying machine. The special spraying assembly is combined with the operation technology to realize the high-efficiency and accurate scanning spraying technology on the multi-row scallion crops: the static spray amplitude of the spray heads on the left side and the right side is larger than the plant height of the green Chinese onions, full plant clamping spray is formed by aligning the left side and the right side of a plurality of rows of green Chinese onion cultivation rows respectively, so that the left spray heads and the right spray heads form cover-type fog drop coverage on the whole green Chinese onions, the spray heads do not need to swing, the relative spatial positions of a plurality of groups of left spray heads and right spray heads corresponding to the plurality of rows of green Chinese onion cultivation rows are kept unchanged, an operator controls the special spraying assembly to control the fog drop coverage density of a green Chinese onion row target by controlling the advancing speed of the special spraying assembly, the high-efficiency, accurate and uniform comprehensive scanning spray on the whole green Chinese onions is realized, the control effect is improved, the problems of pesticide consumption, water consumption, labor consumption, heavy spray, missed spray and the like of a conventional pesticide spraying method are solved, the invention can be applied to both southern mountainous farmland in southern mountainous areas and northern flat land, and can solve the technical bottleneck that the mechanized southern agricultural pesticide spraying in China can not realize large, the short plate of agricultural pesticide spraying plant protection mechanization in southern hilly and mountainous areas is filled up, so that the plant protection mechanization according to local conditions can be realized in both mountainous areas and plains.

Drawings

FIG. 1 is a schematic diagram of a re-spraying area and a leakage spraying area of a conventional reciprocating spraying method.

FIG. 2 is a schematic diagram of the scanning spray of the present invention.

FIG. 3 is a schematic view of the process of variable amplitude of a stepless variable amplitude scanning chemical spraying method.

FIG. 4 is a front view of the multi-row scanning and spraying assembly of the present invention.

FIG. 5 is a top view of the main components of the multi-row scanning and spraying assembly connected to the pipeline for operation.

Fig. 6 is a partial enlarged view of H in fig. 3.

Fig. 7 is a schematic structural view of the expansion lever assembly.

FIG. 8 is a front view of four-row scanning and spraying of whole green Chinese onion.

FIG. 9 is a front view of four rows of expandable scanning and spraying of green Chinese onion.

Fig. 10 is a schematic view of the main structure of the special spraying assembly of structure three.

Detailed Description

The present invention will be described in detail with reference to fig. 2 to 10 and this embodiment, where letters such as A, B, C, D added before or in the middle of the chinese name are used only as differences between the components, so that A, B, C, D is added to the same kind of objects and the reference numerals of the drawings are used to indicate specific directionality, and A, B, C, D itself has no special meaning:

as shown in the attached figure 2, the working principle of the invention is to adopt a scanning spraying method to carry out a scallion multi-row scanning and spraying component, a plurality of rows of scallion rows can be scanned simultaneously, the static spraying amplitude xy for scanning the spray heads on both sides of each row of scallion rows is larger than the single-operation target area width ef (the target area on both sides of the scallion rows), the scanning spray heads can completely cover the crop targets without swinging to increase the spraying amplitude during spraying, the moving direction of the spray heads is consistent with the moving direction of an operator, the deposition density and the uniformity of fog drops sprayed by the spray heads on the targets are controlled by the unidirectional movement of the moving speed of the operator holding the spray heads, and the moving track of the spray heads for scanning and spraying operation is in a straight line; as can be seen from fig. 3, the spraying width of the scanning nozzle can be adjusted correspondingly with the width of the operation target to adapt to the height of the scallion in different growth periods and the change of the target; the static spray amplitude of the reciprocating swing spray head of the conventional spray method is smaller than the width ef of a target area of single operation, the spray head needs to move while circularly and reciprocally swinging on the left side and the right side to spray the medicine, and the spray head needs to do compound motion longitudinally and transversely, so that the deposition density and the uniformity of fog drops sprayed by the reciprocating swing spray head on a target are difficult to control, and the problems of heavy spray and missed spray are difficult to avoid.

As shown in fig. 4-10, a multi-row scanning and pesticide spraying assembly for scallion comprises a special spraying assembly which is operated by an operator 24 and matched with a power spraying machine 23, wherein the static spraying amplitude xy scanned by the special spraying assembly is larger than the width ef of a single-operation target area, the left side surface of a scallion row scanned and sprayed by a left spraying head and the right side surface of the scallion row scanned and sprayed by a right spraying head are combined to form a group of spraying heads during pesticide spraying, and more than two groups of scanning spraying heads perform double-sided three-dimensional pesticide spraying on double-sided targets of the scallion; when spraying the medicine, the spraying angles of more than two groups of scanning spray heads on more than two rows of green onion targets are kept unchanged, the scanning spray heads are kept to move in a single direction consistent with the moving direction of an operator 24, and the operator 24 moving in the furrow 1 controls the deposition density and the deposition uniformity of the targets, namely green onion A row 3, green onion B row 3-1, green onion C row 3-2 and green onion D row 3-3, of the fog drops sprayed by the scanning spray heads on the ridge 2 by means of the moving speed of the two or more groups of scanning spray heads which are held to move in the single direction; the special spraying component mainly comprises a spray rod assembly, a main rod assembly, a pipeline connecting piece assembly, a push rod spray rod joint 27 and a main rod spray rod joint 28, wherein the spray rod assembly is arranged at the front end of the main rod assembly, and the spray rod assembly is movably connected with the main rod assembly through the main rod spray rod joint 28; the spray rod assembly is movably connected with a push rod 26 in the main rod assembly through a push rod spray rod joint 27; a plurality of left spray heads and right spray heads are arranged on the spray rod assembly, and a plurality of groups of left spray heads and right spray heads in the spray rod assembly can spray medicine aiming at the targets of the green Chinese onion rows; when in medicine spraying, a left spray head for scanning and spraying the left side surface of the green Chinese onion row and a right spray head for scanning and spraying the right side surface of the green Chinese onion row are combined to form a whole plant three-dimensional scanning spray head, and more than two groups of whole plant three-dimensional scanning spray heads carry out double-sided three-dimensional medicine spraying on double-side targets of the green Chinese onion; when spraying the medicine, the spraying angles of more than two groups of full plant three-dimensional scanning nozzles to more than two rows of green onion targets are kept unchanged, and the full plant three-dimensional scanning nozzles move in a single direction consistent with the moving direction of an operator 24, and the operator 24 moving in the furrow 1 controls the deposition density and the deposition uniformity of fog drops sprayed by the full plant three-dimensional scanning nozzles on the targets of green onion A, B, C and D, 3-3 planted in the furrow 2, according to the moving speed of the two groups of full plant three-dimensional scanning nozzles moving in the single direction.

The main rod assembly comprises a main rod 15, a handle tightening bolt 25, a push rod 26, a medical switch 29, a push rod handle joint 30, a handle 31, a long sleeve handle 32 and a long sleeve handle rear end 32-1, wherein the long sleeve handle 32 is tightly sleeved at the rear half section of the main rod 15, the long sleeve handle rear end 32-1 of the long sleeve handle 32 is used as a handheld position of an operator 24 during medicine spraying, the handle 31 is used as another handheld position of the operator 24 during medicine spraying, the medical switch 29 and the handle tightening bolt 25 are arranged on the handle 31, the handle 31 is of a hollow tubular structure and is sleeved outside the main rod 15 and can freely slide on the main rod 15 and the long sleeve handle 32, and a bolt penetrates through a rear end hole of the push rod 26 and a front end hole of the handle 31 and then is locked by a locknut to form the push rod handle joint 30.

The main rod spray rod joint 28 is composed of a main rod inner sleeve 14, a main rod hoop 14-1, a main spray bolt 20, a spray rod middle inner sleeve 21 and a spray rod hoop 22, the main rod inner sleeve 14 is sleeved at the front end of the main rod 15, the main rod hoop 14-1 clamps the main rod inner sleeve 14 in a sleeved mode, the spray rod middle inner sleeve 21 is sleeved in the middle of two rows of spray rods 10 in a sleeved mode, the spray rod hoop 22 clamps the spray rod middle inner sleeve 21 in a sleeved mode, and then the main spray bolt 20 penetrates through screw holes of the main rod hoop 14-1 and the spray rod hoop 22 and is locked through a check nut, so that the main rod spray rod joint 28.

The push rod and spray rod joint 27 is composed of a spray rod side inner sleeve 11, a push rod side hoop 11-1, a push rod front end 12 and a spray rod bolt 13, the spray rod side inner sleeve 11 is sleeved on the position of the center of two rows of spray rods 10 on the left side in a sleeved mode, the push rod side hoop 11-1 clamps the spray rod side inner sleeve 11 in a surrounding mode, the spray rod bolt 13 penetrates through the push rod side hoop 11-1 and a screw hole of the push rod front end 12 and is locked through a back check nut, and the push rod and spray rod joint 27 is formed.

The pipeline connecting piece assembly consists of a connecting rubber pipe 16, a rod-dragging connecting pipe 16-1, a rubber pipe joint 17, a movable rotating head 18, a large-size movable rotating head 18-1, a spray rod access port 19, a thick spray rod access port 19-1, a liquid medicine switch 33, a machine rod rubber pipe 34, a spray rod left movable joint 36, a spray rod right movable joint 36-1 and an angle connector 37, and the liquid medicine can be conveyed and sprayed after the pipeline connecting piece assembly is connected with the spray rod assembly.

The spray rod assembly adopts one of the following 3 structures, and the spray rod assembly adopts different structures, and then the pipeline connecting piece assembly is adapted with it:

1) the structure I is as follows: spray lance assembly of two lines of benchmark spraying: mainly comprises a scallion line A3, a scallion line B3-1, a scallion line C3-2, a scallion line D3-3, a left spray amplitude A4, a right spray amplitude A4-1, a left spray amplitude B4-2, a right spray amplitude B4-3, a right spare spray head 5, a left spray head 5-1, a right spray head 5-2, a left spray head A5-3, a right spray head A5-4, a left spare spray head 5-5, a vertical rod tee 6-1, a vertical rod tee 6-2, a vertical rod 7, an A vertical rod 7-1, a B vertical rod 7-2, a left two lines of expanding openings 8, a right expanding opening 8-1, a left plug 9, a right plug 9-1, a spray rod 10 and an expanding rod assembly 35, wherein the expanding rod assembly 35 is of an L-shaped bent rod structure and comprises an L-shaped bent rod, an expanding rod connector 35-1, a right, The extension rod nozzle 35-2, one end of the L-shaped bent rod is provided with an extension rod joint 35-1, and the other end is provided with an extension rod nozzle 35-2; the spray rod comprises a left spray head 5-1, a right spray head 5-2, a left spray head A5-3, a right spray head A5-4, a left spare spray head 5-5, a vertical rod tee 6-1, a vertical rod tee B6-2, a vertical rod 7, an A vertical rod 7-1, a B vertical rod 7-2 and two rows of spray rods 10 which are all of a hollow structure, wherein a left expanding port 8 is arranged at the left end of each of the two rows of spray rods 10, the left expanding port 8 is screwed into a left plug 9 without water leakage, a right expanding port 8-1 is arranged at the right end of each of the two rows of spray rods 10, and the right expanding port 8-1 is screwed into; the left side, the center and the right side of the two rows of spray rods 10 are sequentially provided with upright rods 7, upright rods A7-1 and upright rods B7-2, the lower ends of the upright rods 7 are provided with upright rod tee joints 6, the left side ports and the right side ports of the upright rod tee joints 6 are respectively provided with a right spare spray head 5 and a left spray head 5-1, the position names of the spray heads are relative to a green Chinese onion row, and the green Chinese onion row is positioned between the two upright rods, so the position names are opposite, the same is as below, when spray pieces of the right spare spray head 5 are replaced by non-porous wafers with the same diameter, the right spare spray head is in a blocking state (when only two rows of green Chinese onion rows are sprayed), and the left spray head 5-1 can generate a left; the lower end of the upright rod A7-1 is provided with an upright rod A tee 6-1, the left and right side ports of the upright rod A tee 6-1 are respectively provided with a right spray head 5-2 and a left spray head A5-3, the right spray head 5-2 can generate a right spray amplitude A4-1 which completely covers the right side surface of the row 3 of the green Chinese onions A when spraying, and the left spray head 5-3 can generate a left spray amplitude B4-2 which completely covers the left side surface of the row 3-1 of the green Chinese onions B when spraying; the lower end of the B upright post 7-2 is provided with an upright post B tee 6-2, the left and right side ports of the upright post B tee 6-2 are respectively provided with a right A spray head 5-4 and a left spare spray head 5-5, the right A spray head 5-4 can generate a right B spray amplitude 4-3 which completely covers the right side surface of the row 3-1 of the green Chinese onion B when spraying, and when the spray piece of the left spare spray head 5-5 is replaced by a non-porous wafer with the same diameter, the left spare spray head is in a blocking state (when only two rows are sprayed).

The spray lance assembly of two lines of benchmark spraying can extend and upgrade into and can spray the device on three lines of green Chinese onion rows simultaneously:

the left plug 9 is removed, an expansion rod joint 35-1 of an expansion rod assembly 35 is installed into a left expansion port 8 to form a spray rod left loose joint 36, an expansion rod spray head 35-2 of the expansion rod assembly 35 sprays the left side face of a D row 3-3 of green Chinese onions to generate a left C spray amplitude 4-4, then after a non-porous wafer of a right spare spray head 5 is replaced by a normal spray sheet, the right spare spray head 5 becomes a right D spray head 5-0-1 capable of normally spraying medicine, and sprays the right side face of the D row 3-3 of green Chinese onions to generate a right C spray amplitude 4-5; or the right plug 9-1 is removed, the expansion rod joint 35-1 of the expansion rod component 35 is installed into the right expansion port 8-1 to form the spray rod right loose joint 36-1, then the expansion rod spray head 35-2 sprays right D spray amplitude 4-7 on the right side surface of the green Chinese onion row 3-2, after the non-porous wafer of the left spare spray head 5-5 is replaced by a normal spray sheet, the left spare spray head 5-5 becomes the left D spray head 5-5-1 capable of normally spraying medicine, and the spray amplitude generated by spraying the expansion rod joint 35-1 on the left side surface of the green Chinese onion row 3-2 is the left D spray amplitude 4-6.

The spray lance assembly of two lines of benchmark spraying expands and upgrades into the device that can scan spraying four lines of green Chinese onion rows simultaneously:

firstly, removing a left plug 9, installing an expansion rod joint 35-1 of an expansion rod assembly 35 into a left expansion port 8 to form a spray rod left loose joint 36, spraying a left side face of a D row 3-3 of green Chinese onions by an expansion rod spray head 35-2 of the expansion rod assembly 35 to generate a left C spray amplitude 4-4, then replacing a non-porous wafer of a right spare spray head 5 with a normal spray sheet, changing the right spare spray head 5 into a right D spray head 5-0-1 capable of normally spraying medicine, and spraying the right side face of the D row 3-3 of green Chinese onions to generate a right C spray amplitude 4-5; or the right plug 9-1 is removed, an expansion rod joint 35-1 of another expansion rod component 35 is installed into a right expansion port 8-1 to form a spray rod right loose joint 36-1, then the expansion rod spray head 35-2 sprays right D spray amplitude 4-7 on the right side surface of the green Chinese onion row 3-2, after a non-porous wafer of the left spare spray head 5-5 is replaced by a normal spray piece, the left spare spray head 5-5 becomes the left D spray head 5-5-1 capable of spraying medicine normally, and the spray amplitude generated by spraying the left side surface of the green Chinese onion row 3-2 is the left D spray amplitude 4-6.

In the first structure, a machine rod rubber pipe 34 in a pipeline connecting piece assembly is connected between a power spraying machine 23 and one end of a liquid medicine switch 33, a connecting rubber pipe 16 penetrates through the inner cavity of a hollow main rod 15, one end of the connecting rubber pipe 16 is connected with the liquid medicine switch 33, the other end of the connecting rubber pipe 16 is provided with a rubber pipe joint 17, the rubber pipe joint 17 is connected with the movable end of a movable rotary head 18, the fixed end of the movable rotary head 18 is fixedly connected with a spray rod access port 19 connected with two rows of spray rods 10, high-pressure liquid medicine generated by a medicine pump of the power spraying machine 23 sequentially flows through the machine rod rubber pipe 34, the liquid medicine switch 33, the connecting rubber pipe 16, the rubber pipe joint 17, the movable rotary head 18 and the spray rod access port 19 to reach the two rows of spray rods 10, then is distributed to an expansion rod assembly 35 or more than 3 vertical rods of the first structure by the two rows of spray, the center distance between two adjacent vertical rods for spraying the pesticide on a plurality of rows of green Chinese onion rows at the same time needs to be equal to the center distance between the widths of ridge furrows 2 between two adjacent furrows of the sprayed green Chinese onion rows.

2) The structure II is as follows: a spray rod assembly for spraying four rows by reference mainly comprises a welsh onion line A3, a welsh onion line B3-1, a welsh onion line C3-2, a welsh onion line D3-3, a left spray amplitude A4, a right spray amplitude A4-1, a left spray amplitude B4-2, a right spray amplitude B4-3, a left spray amplitude C4-4, a right spray amplitude C4-5, a left spray amplitude D4-6, a right spray amplitude D4-7, a left spray head 5-1, a right spray head 5-2, a left spray head A5-3, a right spray head A5-4, a right spare spray head B5-6, a left spray head C5-7, a right spray head C5-8, a left spare spray head B5-9, a right spray head D5-0-1, a left spray head D5-1, a tee 6, a vertical rod tee 6-1, a B tee 6-2, a vertical rod tee 6-9, a vertical rod tee, The expansion rod assembly 35 is an L-shaped bent rod-shaped structure and comprises an L-shaped bent rod, an expansion rod connector 35-1 and an expansion rod nozzle 35-2, one end of the L-shaped bent rod is provided with an expansion rod connector 35-1, and the other end of the L-shaped bent rod is provided with an expansion rod nozzle 35-2; 5-1 parts of a left spray head, 5-2 parts of a right spray head, 5-3 parts of a left spray head A, 5-4 parts of a right spray head A, 5-6 parts of a right spare spray head B, 5-7 parts of a left C spray head, 5-8 parts of a right C spray head, 5-9 parts of a left spare spray head B, 5-0-1 parts of a right D spray head, 5-5-1 parts of a left D spray head, 6-1 parts of a vertical rod tee joint, 6-2 parts of a vertical rod B, 6-3 parts of a vertical rod C tee joint, 6-4 parts of a vertical rod D tee joint, 7-1 parts of a vertical rod A, 7-2 parts of a B vertical rod, 7-3 parts of a C vertical rod.

The left end of the four-row spray rod 10-1 is provided with a left A expansion port 8-2, the left A expansion port 8-2 is screwed into a left A plug 9-2 without water leakage, and the right end of the four-row spray rod 10-1 is provided with a right B expansion port 8-3, and the right B expansion port 8-3 is screwed into a right A plug 9-3 without water leakage; upright posts 7, A upright posts 7-1, B upright posts 7-2, C upright posts 7-3 and D upright posts 7-4 are arranged in four rows of spray bars 10-1 at equal intervals from the left side to the right side in sequence, communicated structures are arranged among the four rows of spray bars 10-1, the upright posts 7, A upright posts 7-1, B upright posts 7-2, C upright posts 7-3 and D upright posts 7-4, an upright post C tee 6-3 is arranged at the lower end of the C upright post 7-3, right B spare nozzles 5-6 and left C nozzles 5-7 are respectively arranged at the left side and right side ports of the upright post C tee 6-3, and when spray pieces of the right B spare nozzles 5-6 are replaced by non-porous round pieces with the same diameter, the right B spare nozzle 5-6 is in a blocking state (when only four rows are sprayed), and a left C spray amplitude 4-4 generated by the left C nozzle 5-7 completely covers the left side surface of a D row 3-3 of the green Chinese onion; the lower end of the upright rod 7 is provided with an upright rod tee 6, the left and right side ports of the upright rod tee 6 are respectively provided with a right D spray head 5-0-1 and a left spray head 5-1, a right C spray amplitude 4-5 generated by the right D spray head 5-0-1 completely covers the left side surface of a green Chinese onion row D3-3, and a left A spray amplitude 4 completely covering the left side surface of a green Chinese onion row A3 can be generated when the left spray head 5-1 sprays; the lower end of the upright rod A7-1 is provided with an upright rod A tee 6-1, the left and right side ports of the upright rod A tee 6-1 are respectively provided with a right spray head 5-2 and a left spray head A5-3, the right spray head 5-2 can generate a right spray amplitude A4-1 which completely covers the right side surface of the row 3 of the green Chinese onions A when spraying, and the left spray head 5-3 can generate a left spray amplitude B4-2 which completely covers the left side surface of the row 3-1 of the green Chinese onions B when spraying; the lower end of the B upright post 7-2 is provided with an upright post B tee 6-2, the left and right side ports of the upright post B tee 6-2 are respectively provided with a right A spray head 5-4 and a left D spray head 5-5-1, a right B spray amplitude 4-3 which completely covers the right side surface of a B row 3-1 of the green Chinese onions can be generated when the right A spray head 5-4 sprays, and a left D spray amplitude 4-6 which is generated by a left D spray head 5-5-1 can completely cover the left side surface of a C row 3-2 of the green Chinese onions; the lower end of the upright post 7-4 is provided with an upright post D tee 6-4, the left and right side ports of the upright post B tee 6-2 are respectively provided with a right C spray head 5-8 and a left B spare spray head 5-9, the right D spray amplitude 4-7 generated when the right C spray head 5-8 sprays can completely cover the right side surface of the row 3-2 of the green Chinese onion C, and when the spray piece of the left B spare spray head 5-9 is replaced by a non-porous wafer with the same diameter, the left B spare spray head 5-9 is in a blocking state (when only four rows are sprayed).

Spray lance assembly of four rows of benchmark spraying can extend and upgrade into and can spray the device of five lines of green Chinese onion rows simultaneously:

expanding the requirement of upgrading into spraying five elements: the left A plug 9-2 is removed, an expansion rod joint 35-1 of an expansion rod component 35 is installed into a left A expansion port 8-2 to form a spray rod left loose joint 36, an expansion rod spray head 35-2 of the expansion rod component 35 completely covers the left side face of a newly-added green Chinese onion row, and the standard spraying two-line expansion is upgraded into three-line spraying, and the same operation is carried out, and then after a non-porous wafer of a right B spare spray head 5-6 is replaced by a normal spraying piece, the right spare spray head 5 becomes a right spare spray head 5 capable of normally spraying medicine, and the right side face of the newly-added green Chinese onion row can be completely covered with medicine (the same operation is carried out, namely the standard spraying two-line expansion is upgraded into three-line spraying, and the same structure is adopted); or the right A plug 9-3 is removed, the expansion rod joint 35-1 of the expansion rod component 35 is installed into the right B expansion port 8-3 to form the spray rod right loose joint 36-1, the expansion rod spray head 35-2 completely covers the right side face of the newly added green Chinese onion row to spray the medicine (the same operation of 'expansion upgrading into three spraying lines' in the same structure is carried out), after the non-porous wafer of the left spare spray head 5-5 is replaced by the normal spraying sheet, the left spare spray head 5-5 is changed into the left spare spray head 5-5 capable of normally spraying the medicine, and the left side face of the newly added green Chinese onion row can be completely covered with the medicine to spray the medicine (the same operation of 'expansion upgrading into three spraying lines' in the same structure is carried out).

The spray lance assembly of four lines of benchmark spraying expands and upgrades into the device that can scan spraying six lines of green Chinese onion lines simultaneously:

firstly, removing a left A plug 9-2, installing an expansion rod joint 35-1 of an expansion rod assembly 35 into a left A expansion port 8-2 to form a spray rod left loose joint 36, enabling the expansion rod spray head 35-2 of the expansion rod assembly 35 to completely cover the left side face of a newly added green Chinese onion row to spray medicine (the same operation of 'two-row standard spraying expansion upgrading into four-row spraying' in the same structure), then replacing a non-porous wafer of a right B spare spray head 5-6 with a normal spray sheet, enabling the right B spare spray head 5-6 to be changed into a right B spare spray head 5-6 capable of completely covering the normal medicine spraying of the right side face of the newly added green Chinese onion row, and enabling the same operation of 'two-row standard spraying upgrading into four-row spraying' in the same structure to completely cover the right side face of the newly added green Chinese onion row to spray medicine); then the right A plug 9-3 is removed, an expansion rod joint 35-1 of another expansion rod component 35 is installed into a right B expansion port 8-3 to form a spray rod right loose joint 36-1, the expansion rod spray head 35-2 can completely cover the left side face of a newly-added green Chinese onion row to spray medicine (the same operation of 'two-row spraying expansion and upgrading into four-row spraying' in the same structure), after the non-porous wafer of the left B spare spray head 5-9 is replaced by a normal spray sheet, the left spare spray head 5-5 is changed into a left B spare spray head 5-9 capable of normally spraying medicine, and the same operation of 'two-row spraying expansion and upgrading into four-row spraying' in the same structure is carried out.

In the second structure, a machine rod rubber hose 34 in a pipeline connecting piece assembly is connected between the power spraying machine 23 and one end of a liquid medicine switch 33, the connecting rubber hose 16 penetrates through the inner cavity of the hollow main rod 15, one end of the connecting rubber hose 16 is connected with the liquid medicine switch 33, the other end of the connecting rubber hose 16 is provided with a rubber hose joint 17, the rubber hose joint 17 is connected with the movable end of the movable rotary head 18, the fixed end of the movable rotary head 18 is fixedly connected with a spray rod access port 19 connected with four rows of spray rods 10-1, high-pressure liquid medicine generated by a medicine pump of the power spraying machine 23 sequentially flows through the machine rod rubber hose 34, the liquid medicine switch 33, the connecting rubber hose 16, the rubber hose joint 17, the movable rotary head 18 and the spray rod access port 19 to reach the four rows of spray rods 10-1, then is divided to expansion rod assemblies 35 or more than 5 in the second structure by the four rows of spray rods 10-1, and, the center distance between two adjacent vertical rods for spraying the pesticide on a plurality of rows of green Chinese onion rows at the same time needs to be equal to the center distance between the widths of ridge furrows 2 between two adjacent furrows of the sprayed green Chinese onion rows.

3) The structure is three: on the basis of a first structure or a second structure, an original two-row spray rod 10 or four-row spray rod 10-1 is replaced by a thickened and lengthened multi-row spray rod 10-2, a spray rod access port 19-1 is arranged in the center of the multi-row spray rod 10-2, expansion thick rod spray heads 35-0-1 are arranged at the left end and the right end of the multi-row spray rod 10-2, more than two corner connector pieces 37 are arranged in the middle of the multi-row spray rod 10-2, the corner connector pieces 37 can be fixed at the rear part of a suspension type tractor, and the corner connector pieces 37 are thick metal pieces in a right angle shape or a rectangular shape and can bear the weight of a spray rod assembly of the third structure and the impact force of the spray rod assembly of the third structure in the; a large-size movable rotating head 18-1 is connected between a thick spray rod access port 19-1 and a rod-drag connecting pipe 16-1 in the pipeline connecting piece assembly, and the rod-drag connecting pipe 16-1 is connected with the output end of a liquid medicine pump of the suspension type tractor; the middle of a thick spray rod access port 19-1 and a rod dragging connecting pipe 16-1 in a pipeline connecting piece assembly in the third structure is connected with a large-size movable rotating head 18-1, the left end and the right end of a plurality of rows of spray rods 10-2 are provided with expanded thick rod spray heads 35-0-1, and the rod dragging connecting pipe 16-1 is connected with the output end of a liquid medicine pump of a suspension type tractor.

High-pressure liquid medicine is introduced into a special spraying assembly to carry out efficient scanning and spraying, the number of vertical rods, vertical rod tee joints, left spray heads and right spray heads can be matched according to the number of green Chinese onion rows scanned simultaneously, the total length of a plurality of rows of spray rods 10-2 and extended thick rod spray heads 35-0-1 arranged at the left end and the right end of the spray rods can reach 20-30 meters, a suspension type tractor matched with the special spraying assembly with the third structure is loaded by using a suspension type tractor as power and walks in the green Chinese onion field, 13-20 rows of vertical scanning and spraying medicine can be simultaneously sprayed on the left side and the right side of the green Chinese onion rows, the special spraying assembly is suitable for areas where the green Chinese onions are planted in large scale in plain, and the highest ratio of the special spraying assembly can improve the work efficiency.

The operator 24 carries the power spraying machine 23, holds the handle 31 with one hand and holds the long sleeve handle rear end 32-1 of the long sleeve handle 32 with the other hand; the handle loosening and tightening bolt 25 is screwed to position the handle 31 on the long sleeve handle 32, an operator 24 holds the handle 31 on the main rod and the rear end 32-1 of the long sleeve handle with both hands during spraying, opens the medical switch 29 to enable the medicine to operate normally, opens the medicine switch 33 and moves forward at a constant speed along the trends of the ridge furrows 1 and ridge furrows 2 of straight lines or arc lines, and places two rows of spray rods 10 or 10-1 above the row of the Chinese onions, so that each vertical rod is positioned right above the ridge furrows 1 between the adjacent ridge furrows 2, and the spray amplitude of each left and right scanning nozzle can be aligned to and completely cover the corresponding left and right side surfaces of the row of the Chinese onions; the scanning nozzle adopts a fan-shaped atomizing nozzle or an adjustable conical atomizing nozzle, the side spray width of the green Chinese onion row can be changed by adjusting the included angle between the fan-shaped atomizing surface and the vertical rod through the fan-shaped atomizing nozzle, or the side spray width of the green Chinese onion row can be changed by adjusting the atomizing angle of the adjustable conical atomizing nozzle, so that the covered green Chinese onion row is efficiently, accurately and uniformly scanned and sprayed with chemicals, re-spraying and missing spraying are avoided, labor, chemicals and water are saved, and the prevention effect and the working efficiency are improved.

When the spraying operation is stopped and the spraying operation is finished, the handle tightening bolt 25 on the handle 31 is loosened, the handle 31 is pushed and pulled to the direction of the rear end 32-1 of the long sleeve handle along the long sleeve handle 32, the push rod 26 linked with the handle 31 through the push rod handle joint 30 is driven to move to the rear end 32-1 of the long sleeve handle, the push rod spray rod joint 27 drives the two rows of spray rods 10 (or four rows of spray rods 10-1) to rotate around the main rod spray rod joint 28, and the two rows of spray rods 10 (or four rows of spray rods 10-1) are parallel to the main rod 15, so that the storage and the keeping are convenient.

The multi-row scanning and spraying component of the scallion carries out scanning and spraying by a conventional stretcher type motorized sprayer, a knapsack liquid pump sprayer or a knapsack electric sprayer (hereinafter referred to as a power sprayer) and a special spraying component through a plurality of groups of three-dimensional clamping and spraying the left and right side surfaces of a scallion row, the positions of 4 (or more than 4) of two groups (or more than two groups) of spray heads are kept relatively still and consistent with the advancing direction of an operator during spraying operation, the advancing track of the spray heads for scanning and spraying the medicine is superposed with the central line of a straight line or curve-shaped scallion row, the working efficiency can be improved by 6 times (the spraying of two rows can be improved by 6 times, the spraying of four rows can be improved by 12 times) compared with a common knapsack manual sprayer (which is a worker-16 type), a suspension tractor matched with the special spraying component with the third structure can simultaneously scan and spray 13-20 rows on the left and right sides of the scallion, compared with the common knapsack manual sprayer (worker-16 type), the highest ratio can improve the work efficiency by 60 times, save water and pesticide and improve the control effect of plant diseases and insect pests.

The spray rod assembly adopts a first structure, a second structure or a third structure, when the third structure is adopted, the spray rod can adopt a thickened and lengthened structure, the number of the vertical rod, the vertical rod tee joint, the left spray head and the right spray head can be matched according to the number of the green Chinese onion rows to be scanned simultaneously, and then the green Chinese onion multi-row scanning and spraying component can adopt a suspension type dragging and spraying machine as power and is fixed at the rear part of the suspension type dragging and spraying machine in a suspension manner; the special spraying component is connected with high-pressure liquid medicine from a medicine pump of the suspension type dragging medicine spraying machine to spray medicine, and the total length of the spray rod reaches 20-30 meters, so that the special spraying component becomes a special scanning medicine spraying component at the rear part of the suspension type dragging medicine spraying machine.

The medical switch 29 for controlling the power spraying machine 23 is arranged on the left handle 8 and is used for controlling the power spraying machine 23 to pressurize or stop, and the medical switch 29 adopts an accelerator switch, a remote control switch or a power switch.

Upright rods 7, an A upright rod 7-1 and a B upright rod 7-2 are sequentially arranged on a spray rod of a spray rod assembly of the spray rod assembly with two rows of spray rods sprayed on the basis of the first structure at equal intervals from the left side to the right side; upright posts 7, an A upright post 7-1, a B upright post 7-2, a C upright post 7-3 and a D upright post 7-4 are sequentially arranged on a spray rod of a spray rod assembly with four rows of spray rods sprayed on the basis of the second structure at equal intervals from the left side to the right side; the length and the thickness of the third spraying rod of the structure are matched according to the number of the rows of the green Chinese onions to be sprayed, the length and the thickness of the spraying rods are increased along with the increase of the number of the rows of the green Chinese onions, the number of the vertical rods is matched along with the increase of the number of the rows of the green Chinese onions, and the number of the vertical rods is one more than the number of the rows of the green Chinese onions; the spray rod and the vertical rod are communicated, a vertical rod tee joint is arranged at the lower end of the vertical rod, a right spray head and a left spray head are respectively arranged at the left side port and the right side port of the vertical rod tee joint, a right spray width generated by the right spray head completely covers the left side surface of a green Chinese onion row, and a left spray width completely covers the left side surface of the green Chinese onion row can be generated when the left spray head sprays.

The spray lance assembly of two lines of benchmark spraying of structure one or the spray lance assembly of four lines of benchmark spraying of structure two, can expand the spray lance assembly of one line or two lines of spraying of upgrading one-tenth more: firstly, after a left plug 9 needs to be removed, an expansion rod joint 35-1 of an expansion rod assembly 35 is installed into a left expansion port 8 to form a spray rod left loose joint 36, the spray amplitude of an expansion rod spray head 35-2 of the expansion rod assembly 35 to a D row 3-3 of green Chinese onions is a left C spray amplitude 4-4, then after a non-porous wafer of a right spare spray head 5 is replaced by a normal spray sheet, the right spare spray head 5 becomes a right D spray head 5-0-1 capable of spraying medicine normally, and the spray amplitude is a right C spray amplitude 4-5; or after the right plug 9-1 is removed, the expansion rod joint 35-1 of the expansion rod component 35 is installed into the right expansion port 8-1 to form the spray rod right loose joint 36-1, the spray amplitude of the expansion rod spray head 35-2 on the row 3-2 of the scallion C is the right D spray amplitude 4-7, after the non-porous wafer of the left spare spray head 5-5 is replaced by the normal spray sheet, the left spare spray head 5-5 becomes the left D spray head 5-5-1 capable of spraying the medicine normally, and the spray amplitude is the left D spray amplitude 4-6. When one line is needed to be sprayed more, only one of the two steps is needed, and the two steps are needed to be implemented when two lines are needed to be sprayed more.

The scanning nozzle adopts a fan-shaped atomizing nozzle or an adjustable conical atomizing nozzle, the side spray width of the green Chinese onion row can be changed by adjusting the included angle between the fan-shaped atomizing surface and the vertical rod through the fan-shaped atomizing nozzle, or the atomizing angle of the adjustable conical atomizing nozzle is adjusted, so that the side spray width of the green Chinese onion row is changed, and the covered green Chinese onion row is efficiently, accurately and uniformly scanned to spray the medicine.

When the spray rod assembly adopts the structure I and the structure II, the whole assembly comprises three movable joints, namely a push rod spray rod joint 27, a main rod spray rod joint 28 and a push rod handle joint 30, and the spray rod assembly is movably connected with the main rod assembly through the main rod spray rod joint 28; the spray rod assembly is movably connected with a push rod 26 in the main rod assembly through a push rod spray rod joint 27; a bolt penetrates through the rear end hole of the push rod 26 and the front end hole of the handle 31 and then is locked by a locknut, and a push rod handle joint 30 is formed.

The multi-row scanning and spraying assembly for the scallion adopting the structure I and the structure II is realized by controlling a power spraying machine 23 by an operator 24 and matching with a special spraying assembly to carry out multi-row scanning of the scallion, the angle of more than two groups of scanning spray heads to a target is kept unchanged during spraying, the spray heads move in a single direction and are consistent with the advancing direction of the operator 24, and the operator 24 advances in the furrow 1 to hold the advancing speed of the single-direction movement spray heads to control the deposition density and the uniformity of fog drops sprayed by the spray heads on the scallion row targets of the ridge furrow 2; the common characteristic of the device is that the spray width is larger than the crop target by keeping the position between the left and right groups of spray heads relatively immobile, and the travelling direction of the two groups of spray heads is kept consistent with that of an operator, so that scanning and spraying of multiple rows of green Chinese onion crops can be completed. During medicine spraying, an operator 24 holds the handle 31 on the main rod and the rear end 32-1 of the long sleeve handle with two hands, turns on the medicine switch 29 to enable the medicine to run normally, turns on the medicine switch 33 and moves forward along the direction of the linear or arc ridge furrows 1 and ridge furrows 2 at a constant speed, places two rows of spray rods 10 or four rows of spray rods 10-1 above the rows of the green Chinese onions, enables each vertical rod to be positioned right above the ridge furrows 1 between the adjacent ridge furrows 2, and enables the spray amplitude of each left and right spray heads to be aligned with and completely cover the corresponding left and right side surfaces of the rows of the green Chinese onions; the spray head adopts a fan-shaped atomizing spray head or an adjustable conical atomizing spray head, the side spray width of the row of the green Chinese onions can be changed by adjusting the included angle between the fan-shaped atomizing surface and the vertical rod when the fan-shaped atomizing spray head is adopted, and the adjustable conical atomizing spray head is used for adjusting the atomizing angle of the adjustable conical atomizing spray head so as to change the side spray width of the row of the green Chinese onions.

The multi-row scanning and spraying assembly for the green Chinese onion is implemented, the multi-row scanning and spraying assembly for the green Chinese onion is matched with a special spraying assembly through a power spraying machine, the scanning and spraying are implemented through the left side surface and the right side surface of a plurality of groups of three-dimensional clamping and spraying green Chinese onion rows, the positions of 4 (or more than 4) of two groups (or more than two groups) of spray heads are kept relatively still and consistent with the advancing direction of an operator during spraying operation, the advancing track of the spray heads for the scanning and spraying operation is superposed with the central line of the straight line or curve-shaped green Chinese onion rows, compared with a common knapsack manual sprayer (which is an industrial agricultural sprayer-16 type), the working efficiency can be improved by more than 6 times, water and pesticide are saved, the uniformity of sprayed pesticide fog drops and the hit rate are improved. The method really realizes symptomatic medicine feeding, realizes efficient, accurate and uniform comprehensive cover type scanning medicine spraying of the whole green Chinese onion plant, improves the control effect of plant diseases and insect pests, and avoids the problems of medicine expense, water consumption, labor waste, heavy spraying, missed spraying and the like of the conventional medicine spraying method. The invention can be applied to both southern mountainous area hilly farmland and northern flat dam plain farmland, can solve the technical bottleneck of agricultural pesticide spraying and plant protection mechanization in southern mountainous area hilly and mountainous area in China which cannot realize large-scale plant protection mechanization at present, can fill up the short boards of agricultural pesticide spraying and plant protection mechanization in southern hilly and mountainous area in China, and can realize the plant protection mechanization according to local conditions in both mountainous area and plain in China.

Claims

1. A Chinese onion multirow scans and spouts medicine subassembly, include by operator (24) control, and with the special spraying subassembly that the power sprayer (23) matches, characterized by that the said special spraying subassembly scan can scan the Chinese onion row of multirow and implement static spray width (xy) that the shower nozzle of the row Chinese onion row bilateral side scans is greater than the target area width (ef) of single operation at the same time, the said special spraying subassembly mainly by spray boom assembly, king rod assembly, pipeline connector assembly, push rod spray boom joint (27) and king rod spray boom joint make up, the said spray boom assembly is set up in the front end of the king rod assembly, spray boom assembly and king rod assembly pass the movable connection of the boom spray boom joint (28); the spray rod assembly is movably connected with a push rod (26) in the main rod assembly through a push rod spray rod joint (27); a plurality of left spray heads and right spray heads are arranged on the spray rod assembly, and the left spray heads and the right spray heads in the spray rod assembly can spray medicine aiming at targets of the scallion rows; when in medicine spraying, a left spray head for scanning and spraying the left side surface of the green Chinese onion row and a right spray head for scanning and spraying the right side surface of the green Chinese onion row are combined to form a whole plant three-dimensional scanning spray head, and more than two groups of whole plant three-dimensional scanning spray heads carry out double-sided three-dimensional medicine spraying on double-side targets of the green Chinese onion; more than two groups of full plant three-dimensional scanning nozzles keep the spraying angles of more than two rows of green Chinese onion targets unchanged during spraying, keep the spraying angles consistent with the advancing direction of an operator (24) and move in a single direction, and the operator (24) advancing in the furrow (1) controls the deposition density and the uniformity of fog drops sprayed by the full plant three-dimensional scanning nozzles on the targets of green Chinese onion A (3), B (3-1), C and D (3-3) planted in the ridge (2) by depending on the advancing speed of the two groups of full plant three-dimensional scanning nozzles which are held to move in the single direction;

the main rod assembly consists of a main rod (15), a handle tightening bolt (25), a push rod (26), a medical instrument switch (29), a push rod handle joint (30), a handle (31), a long sleeve handle (32) and a long sleeve handle rear end (32-1), wherein the long sleeve handle (32) is tightly sleeved at the rear half section of the main rod, the long sleeve handle rear end (32-1) of the long sleeve handle (32) is used as a holding position of an operator (24) during medicine spraying, the handle (31) is used as the other holding position of the operator (24) during medicine spraying, the medical instrument switch (29) and the handle tightening bolt are arranged on the handle (31), the handle (31) is of a hollow tubular structure, is sleeved outside the main rod (15) and can freely slide on the main rod (15) and the long sleeve handle (32), and a bolt penetrates through a rear end hole of the push rod (26) and a front end hole of the handle (31) and then is locked by a locknut, forming a putter handle joint (30);

the main rod spray rod joint (28) consists of a main rod inner sleeve (14), a main rod hoop (14-1), a main spray bolt (20), a spray rod middle inner sleeve (21) and a spray rod hoop (22), wherein the main rod inner sleeve (14) is sleeved at the front end of the main rod (15), the main rod hoop clamps the main rod inner sleeve (14), the spray rod middle inner sleeve (21) is sleeved in the middle of two rows of spray rods (10), the spray rod hoop (22) clamps the spray rod middle inner sleeve (21), and then the main spray bolt (20) penetrates through screw holes of the main rod hoop (14-1) and the spray rod hoop (22) and is locked by a check nut, so that the main rod spray rod joint (28) is formed;

the push rod-spray rod joint (27) consists of a spray rod side inner sleeve (11), a push rod side hoop (11-1), a push rod front end (12) and a spray rod bolt (13), wherein the spray rod side inner sleeve (11) is sleeved on the position, which is on the left side of the center of the two rows of spray rods (10), the spray rod side inner sleeve (11) is clamped by the push rod side hoop (11-1), and the spray rod bolt (13) penetrates through the push rod side hoop (11-1) and a screw hole rear check nut of the push rod front end (12) to be locked, so that the push rod-spray rod joint (27) is formed;

the pipeline connecting piece assembly consists of a connecting rubber pipe (16), a rod-dragging connecting pipe (16-1), a rubber pipe joint (17), a movable rotary head, a large-size movable rotary head (18-1), a spray rod access port (19), a thick spray rod access port (19-1), a liquid medicine switch (33), a machine rod rubber pipe (34), a spray rod left movable joint (36), a spray rod right movable joint (36-1) and an angle code connecting piece (37), and the liquid medicine can be conveyed and sprayed after the pipeline connecting piece assembly is connected with the spray rod assembly;

the spray rod assembly adopts one of the following 3 structures:

1) the structure I is as follows: spray lance assembly of two lines of benchmark spraying: mainly comprises a green Chinese onion A row (3), a green Chinese onion B row (3-1), a green Chinese onion C row, a green Chinese onion D row (3-3), a left A spray width (4), a right A spray width (4-1), a left B spray width (4-2), a right B spray width, a right standby spray head (5), a left spray head (5-1), a right spray head (5-2), a left A spray head (5-3), a right A spray head (5-4), a left standby spray head (5-5), a vertical rod tee joint (6-1), a vertical rod B tee joint (6-2), a vertical rod (7), an A vertical rod, a B vertical rod (7-2), a left expanding port (8), a right expanding port (8-1), a left plug (9), a right plug (9-1), two rows of spray rods and an expanding rod assembly (35), wherein the expanding rod assembly (35) is of an L-shaped bent rod structure, the device comprises an L-shaped bent rod, an expansion rod joint (35-1) and an expansion rod spray head (35-2), wherein one end of the L-shaped bent rod is provided with the expansion rod joint, and the other end of the L-shaped bent rod is provided with the expansion rod spray head (35-2); the spray rod comprises a left spray head (5-1), a right spray head (5-2), a left A spray head (5-3), a right A spray head (5-4), a left spare spray head (5-5), a vertical rod tee (6), a vertical rod A tee (6-1), a vertical rod B tee (6-2), a vertical rod (7), an A vertical rod (7-1), a B vertical rod (7-2) and two rows of spray rods (10) which are all of a hollow structure, wherein a left expanding port (8) is arranged at the left end of each row of spray rods (10), the left expanding port (8) is screwed into the left plug (9) without water leakage, a right expanding port (8-1) is arranged at the right end of each spray rod (10), and the right expanding port (8-1) is screwed into the right plug (9-1); the left side, the center and the right side of each two rows of spray rods are sequentially provided with a vertical rod (7), an A vertical rod (7-1) and a B vertical rod (7-2), the lower end of each vertical rod (7) is provided with a vertical rod tee (6), the ports of the left side and the right side of each vertical rod tee (6) are respectively provided with a right spare spray head (5) and a left spray head (5-1), when spray pieces of the right spare spray head (5) are replaced by non-porous wafers with the same diameter, the right spare spray head is in a blocking state, and when the left spray head sprays, a left A spray amplitude (4) which completely covers the left side surface of the; the lower end of the upright rod A (7-1) is provided with an upright rod A tee joint (6-1), the left side port and the right side port of the upright rod A tee joint (6-1) are respectively provided with a right spray head (5-2) and a left spray head A, the right spray head A (5-2) can generate a right spray amplitude A (4-1) which completely covers the right side surface of the row A (3) of the green Chinese onions when spraying, and the left spray head A can generate a left spray amplitude B (4-2) which completely covers the left side surface of the row B (3-1) of the green Chinese onions when spraying; the lower end of the B upright post (7-2) is provided with an upright post B tee (6-2), the left and right side ports of the upright post B tee (6-2) are respectively provided with a right A spray head (5-4) and a left standby spray head, the right A spray head (5-4) can generate a right B spray amplitude (4-3) which completely covers the right side surface of the green Chinese onion B row (3-1) when spraying, and when a spray sheet of the left standby spray head (5-5) is replaced by a non-porous wafer with the same diameter, the left standby spray head is in a blocking state;

removing a left plug (9), installing an expansion rod joint (35-1) of an expansion rod assembly (35) into a left expansion port (8) to form a spray rod left loose joint (36), spraying a left C spray amplitude (4-4) on the left side surface of a D row (3-3) of the scallion by an expansion rod spray head (35-2) of the expansion rod assembly (35), then replacing a non-porous wafer of a right spare spray head (5) with a normal spray piece, changing the right spare spray head into a right D spray head (5-0-1) capable of spraying the medicine normally, and spraying the right C spray amplitude (4-5) on the right side surface of the D row (3-3) of the scallion; or the right plug (9-1) is removed, an expansion rod joint (35-1) of the expansion rod assembly (35) is installed into a right expansion port (8-1) to form a spray rod right loose joint (36-1), then the expansion rod spray head (35-2) sprays the right side face of the green Chinese onion row C (3-2) to generate a right D spray amplitude (4-7), after the non-porous wafer of the left spare spray head (5-5) is replaced by a normal spray sheet, the left spare spray head (5-5) becomes a left D spray head (5-5-1) capable of normally spraying, and the left side face of the green Chinese onion row C (3-2) sprays to generate a spray amplitude which is a left D spray amplitude (4-6);

firstly, removing a left plug (9), installing an expansion rod joint (35-1) of an expansion rod assembly (35) into a left expansion port (8) to form a spray rod left loose joint (36), spraying a left C spray amplitude (4-4) on the left side surface of a D row (3-3) of scallion by an expansion rod spray head (35-2) of the expansion rod assembly (35), then replacing a non-porous wafer of a right spare spray head (5) with a normal spray piece, changing the right spare spray head (5) into a right D spray head (5-0-1) capable of normally spraying medicine, and spraying the right side surface of the D row (3-3) of scallion to generate a right C spray amplitude (4-5); then the right plug (9-1) is removed, an expansion rod joint of another expansion rod component (35) is installed into a right expansion port (8-1) to form a spray rod right loose joint (36-1), then the expansion rod spray head (35-2) sprays the right side face of a green Chinese onion C row (3-2) to generate a right D spray width (4-7), after a non-porous wafer of a left spare spray head (5-5) is replaced by a normal spray sheet, the left spare spray head (5-5) becomes a left D spray head (5-5-1) capable of normally spraying medicine, and the left side face of the green Chinese onion C row (3-2) is sprayed to generate a spray width which is a left D spray width (4-6);

in the first structure, a machine rod rubber pipe (34) in a pipeline connecting piece assembly is connected between a power spraying machine (23) and one end of a liquid medicine switch (33), a connecting rubber pipe (16) penetrates through the inner cavity of a hollow main rod (15), one end of the connecting rubber pipe (16) is connected with the liquid medicine switch (33), the other end of the connecting rubber pipe (16) is provided with a rubber pipe joint (17), the rubber pipe joint (17) is connected with the movable end of a movable rotary head (18), the fixed end of the movable rotary head (18) is fixedly connected with a spray rod access port connected with two rows of spray rods (10), high-pressure liquid medicine generated by a liquid medicine pump of the power spraying machine (23) sequentially flows through the machine rod rubber pipe (34), the liquid medicine switch, the connecting rubber pipe (16), the rubber pipe joint (17), the movable rotary head (18) and the spray rod access ports (19) to the two rows of spray rod components (10), and then is divided by the spray rods (10) to expansion (, then the liquid medicine is distributed to corresponding left or right spray heads by the expansion rod component (35) or the upright rods, and scanning and spraying are carried out on a plurality of rows of green Chinese onion rows at the same time;

2) the structure II is as follows: a spray rod assembly for spraying four rows based on a standard mainly comprises a scallion line A (3), a scallion line B (3-1), a scallion line C, a scallion line D (3-3), a left spray amplitude A (4), a right spray amplitude A (4-1), a left spray amplitude B (4-2), a right spray amplitude B, a left spray amplitude C (4-4), a right spray amplitude C (4-5), a left spray amplitude D (4-6), a right spray amplitude D (4-7), a left spray head (5-) 1, a right spray head (5-2), a left spray head A (5-3), a right spray head A (5-4), a right spare spray head B (5-6), a left spray head C (5-7), a right spray head C (5-8), a left spare spray head B (5-9), a right spray head D (5-0-1), a left spray head D (5-5-1), A vertical rod tee joint, a vertical rod A tee joint (6-1), a vertical rod B tee joint (6-2), a vertical rod C tee joint (6-3), a vertical rod D tee joint (6-4), a vertical rod, an A vertical rod (7-1), a B vertical rod (7-2), a C vertical rod (7-3), a D vertical rod (7-4), a left A expanding port (8-2), a right B expanding port (8-3), a left A plug (9-2), a right A plug (9-3), a four-row spray rod (10-1) and an expanding rod component (35), the expansion rod component (35) is of an L-shaped bent rod structure and comprises an L-shaped bent rod, an expansion rod connector and an expansion rod spray head (35-2), wherein one end of the L-shaped bent rod is provided with the expansion rod connector (35-1), and the other end of the L-shaped bent rod is provided with the expansion rod spray head (35-2); the spray gun comprises a left spray head (5-1), a right spray head (5-2), a left spray head A (5-3), a right spray head A (5-4), a right spare spray head B (5-6), a left C spray head (5-7), a right C spray head (5-8), a left spare spray head B (5-9), a right D spray head, a left D spray head (5-5-1), a vertical rod tee joint (6-1), a vertical rod B tee joint (6-2), a vertical rod C tee joint, a vertical rod D tee joint (6-4), a vertical rod (7), an A vertical rod (7-1), a B vertical rod (7-2), a C vertical rod (7-3), a D vertical rod and four rows of spray rods (10-1), which are all of hollow structures, and liquid medicine can;

the left end of the four-row spray rod (10-1) is provided with a left A expansion port (8-2), the left A expansion port (8-2) is screwed into the left A plug (9-2) and cannot leak water, the right end of the four-row spray rod (10-1) is provided with a right B expansion port (8-3), and the right B expansion port (8-3) is screwed into the right A plug (9-3) and cannot leak water; upright posts (7), an A upright post (7-1), a B upright post (7-2), a C upright post (7-3) and a D upright post (7-4) are sequentially arranged at equal intervals from the left side to the right side of a four-row spray rod (10-1), the upright posts, the A upright post (7-1), the B upright post (7-2), the C upright post (7-3) and the D upright post (7-4) are all in a communicated structure, an upright post C tee joint (6-3) is arranged at the lower end of the C upright post, a right B standby spray head and a left C spray head (5-7) are respectively arranged at the left side port and the right side port of the upright post C tee joint (6-3), when spray pieces of the right B standby spray head (5-6) are replaced by non-porous wafers with the same diameter, the right B standby spray head (5-6) is in an occlusion state, and a left C spray amplitude (4-4) generated by the left C spray head (5- -3) left side; the lower end of the upright rod (7) is provided with an upright rod tee joint (6), the left and right side ports of the upright rod tee joint (6) are respectively provided with a right D spray head (5-0-1) and a left spray head (5-1), a right C spray amplitude (4-5) generated by the right D spray head (5-0-1) completely covers the left side surface of a green Chinese onion row D (3-3), and a left A spray amplitude (4) completely covering the left side surface of a green Chinese onion row A (3) can be generated when the left spray head (5-1) sprays; the lower end of the upright rod A (7-1) is provided with an upright rod A tee joint (6-1), the left side port and the right side port of the upright rod A tee joint (6-1) are respectively provided with a right spray head (5-2) and a left spray head (5-3), the right spray head (5-2) can generate a right spray amplitude A (4-1) which completely covers the right side surface of a row A of scallion when spraying, and the left spray head (5-3) can generate a left spray amplitude B (4-2) which completely covers the left side surface of a row B of scallion (3-1) when spraying; the lower end of the B upright post (7-2) is provided with an upright post B tee joint (6-2), the left and right side ports of the upright post B tee joint (6-2) are respectively provided with a right A spray head (5-4) and a left D spray head (5-5-1), a right B spray amplitude (4-3) which completely covers the right side surface of the B row (3-1) of the green Chinese onions can be generated when the right A spray head (5-4) sprays, and a left D spray amplitude generated by the left D spray head (5-5-1) can completely cover the left side surface of the C row (3-2) of the green Chinese onions; the lower end of the upright rod (7-4) is provided with an upright rod D tee (6-4), the left and right side ports of the upright rod B tee are respectively provided with a right C spray head (5-8) and a left B spare spray head (5-9), the right D spray amplitude (4-7) generated when the right C spray head (5-8) sprays can completely cover the right side surface of the row (3-2) of the green Chinese onion C, and when the spray piece of the left B spare spray head (5-9) is replaced by a non-porous wafer with the same diameter, the left B spare spray head (5-9) is in a blocking state;

the left A plug (9-2) is removed, an expansion rod joint (35-1) of an expansion rod component (35) is installed into a left A expansion port to form a spray rod left loose joint (36), an expansion rod spray head (35-2) of the expansion rod component (35) completely covers the left side face of the newly added green Chinese onion row to spray medicine, and then after a hole-free wafer of a right B spare spray head (5-6) is replaced by a normal spray sheet, the right spare spray head (5) becomes a right spare spray head (5) capable of normally spraying medicine and can completely cover the right side face of the newly added green Chinese onion row to spray medicine; or the right A plug (9-3) is removed, an expansion rod joint (35-1) of the expansion rod component (35) is installed into the right B expansion port (8-3) to form a spray rod right loose joint (36-1), the expansion rod spray head (35-2) completely covers the right side face of the newly added green Chinese onion row to spray medicine, after the non-porous wafer of the left spare spray head (5-5) is replaced by a normal spray sheet, the left spare spray head 5-5 is changed into a left spare spray head (5-5) capable of normally spraying medicine, and the left side face of the newly added green Chinese onion row can be completely covered with medicine to spray medicine;

firstly, removing a left A plug (9-2), installing an expansion rod connector (35-1) of an expansion rod assembly (35) into a left A expansion port to form a spray rod left loose joint (36), wherein an expansion rod nozzle (35-2) of the expansion rod assembly (35) can completely cover the left side face of a newly added green Chinese onion row to spray medicine, and then after a non-porous wafer of a right B spare nozzle (5-6) is replaced by a normal spray sheet, the right B spare nozzle becomes a right B spare nozzle (5-6) which can completely cover the normal medicine spraying of the right side face of the newly added green Chinese onion row and can completely cover the right side face of the newly added green Chinese onion row to spray medicine; then the right A plug (9-3) is removed, an expansion rod joint of another expansion rod component (35) is installed into the right B expansion port (8-3) to form a spray rod right loose joint (36-1), so that the expansion rod spray head (35-2) can completely cover the left side face of the newly added green Chinese onion row to spray medicine, and after the non-porous wafer of the left B standby spray head (5-9) is replaced by a normal spray sheet, the left standby spray head (5-5) becomes a left B standby spray head (5-9) capable of normally spraying medicine, and the right side face of the newly added green Chinese onion row can completely cover the right side face of the newly added green Chinese onion row to spray medicine;

in the second structure, a machine rod rubber pipe (34) in a pipeline connecting piece assembly is connected between a power spraying machine (23) and one end of a liquid medicine switch (33), a connecting rubber pipe (16) penetrates through the inner cavity of a hollow main rod (15), one end of the connecting rubber pipe (16) is connected with the liquid medicine switch (33), the other end of the connecting rubber pipe (16) is provided with a rubber pipe joint (17), the rubber pipe joint (17) is connected with the movable end of a movable rotary head (18), the fixed end of the movable rotary head (18) is fixedly connected with a spray rod access port connected with four rows of spray rods (10-1), high-pressure liquid medicine generated by a liquid medicine pump of the power spraying machine (23) sequentially flows through the machine rod rubber pipe (34), the liquid medicine switch, the connecting rubber pipe (16), the rubber pipe joint (17), the movable rotary head (18) and a spray rod access port (19) to the four rows of spray rods, and is distributed to expansion rod assemblies (35) or more than 5 upright rods in the, then the liquid medicine is distributed to corresponding left or right spray heads by the upright rods or the expansion rod components (35), and scanning and spraying are carried out on a plurality of rows of green Chinese onion rows at the same time;

3) the structure is three: on the basis of the structure I or the structure II, the original two rows of spray bars (10) or four rows of spray bars (10-1) are changed into thickened and lengthened multiple rows of spray bars (10-2), a spray rod access port (19-1) is arranged in the center of the multi-row spray rod (10-2), expanded thick rod spray heads (35-0-1) are arranged at the left end and the right end of the multi-row spray rod (10-2), more than two corner connector pieces (37) are arranged in the middle of the multi-row spray rod (10-2), the corner connector pieces (37) can be fixed at the rear part of the suspension type tractor, a large-size movable rotating head (18-1) is connected between the thick spray rod access port (19-1) and a rod drag connecting pipe (16-1) in a pipeline connector assembly, and the rod drag connecting pipe (16-1) is connected with the output end of a liquid medicine pump of the suspension type tractor; the middle of a thick spray rod access port (19-1) and a rod drag connecting pipe (16-1) in a pipeline connecting piece assembly in the third structure is connected with a large-size movable rotating head (18-1), the left end and the right end of a plurality of rows of spray rods (10-2) are provided with expanded thick rod spray heads (35-0-1), and the rod drag connecting pipe (16-1) is connected with the output end of a liquid medicine pump of a suspension type tractor.

2. The multi-row scanning and pesticide spraying assembly for the green Chinese onions according to claim 1, characterized in that when spraying pesticide, an operator (24) holds the handle (31) on the main rod and the rear end (32-1) of the long sleeve handle with both hands, turns on the pesticide switch (29) to enable the pesticide switch (33) to normally operate, turns on the pesticide switch (33) and uniformly advances along the linear or arc furrows (1) and ridges (2), and places two rows of spray bars (10) or four rows of spray bars (10-1) above the green Chinese onions row so that each vertical bar is positioned right above the furrows (1) between adjacent ridges (2), and the spray amplitude of each left and right spray head can be aligned with the corresponding left and right side surfaces of the green Chinese onions row and completely covers the same; the spray head adopts a fan-shaped atomizing spray head or an adjustable conical atomizing spray head, the side spray width of the row of the green Chinese onions can be changed by adjusting the included angle between the fan-shaped atomizing surface and the vertical rod when the fan-shaped atomizing spray head is adopted, and the adjustable conical atomizing spray head is used for adjusting the atomizing angle of the adjustable conical atomizing spray head so as to change the side spray width of the row of the green Chinese onions.

3. The multi-row scanning and pesticide spraying assembly for green Chinese onions according to claim 1 or 2, characterized in that the spray rod assembly adopts a first structure, a second structure or a third structure, when the third structure is adopted, the spray rod can adopt a thickening and lengthening structure, the number of the vertical rods, the vertical rod tee joint, the left spray head and the right spray head can be matched according to the number of green Chinese onions to be scanned simultaneously, and the multi-row scanning and pesticide spraying assembly for green Chinese onions can adopt a suspension type dragging and pesticide spraying machine as power and is fixed at the rear part of the suspension type dragging and pesticide spraying machine in a suspension manner.

4. The multi-row scanning pesticide spraying assembly for green Chinese onions as claimed in claim 3, characterized in that a pesticide switch (29) for controlling the power sprayer (23) is arranged on the left handle (8) and is used for controlling the pressurization or stop of the operation of the power sprayer (23), and the pesticide switch (29) adopts an accelerator switch, a remote control switch or a power switch.

5. The multi-row scanning and spraying assembly for the green Chinese onions according to claim 1 or 2, wherein the spraying rod of the spraying rod assembly with the first structure and the second structure for spraying two rows of reference spraying is sequentially provided with upright rods (7), an A upright rod (7-1) and a B upright rod at equal intervals from left side to right side; upright posts (7), an A upright post, a B upright post (7-2), a C upright post (7-3) and a D upright post (7-4) are sequentially arranged on a spray rod of a spray rod assembly with four rows of spray rods sprayed on the basis of the second structure at equal intervals from the left side to the right side; the length and the thickness of the third spraying rod of the structure are matched according to the number of the rows of the green Chinese onions to be sprayed, the length and the thickness of the spraying rods are increased along with the increase of the number of the rows of the green Chinese onions, the number of the vertical rods is matched along with the increase of the number of the rows of the green Chinese onions, and the number of the vertical rods is one more than the number of the rows of the green Chinese onions; the spray rod and the vertical rod are communicated, a vertical rod tee joint is arranged at the lower end of the vertical rod, a right spray head and a left spray head are respectively arranged at the left side port and the right side port of the vertical rod tee joint, a right spray width generated by the right spray head completely covers the left side surface of a green Chinese onion row, and a left spray width completely covers the left side surface of the green Chinese onion row can be generated when the left spray head sprays.

6. The multi-row scanning and pesticide spraying assembly for the green Chinese onions as claimed in claim 1 or 2, wherein the boom assembly with the first structure and the two rows of reference spraying or the boom assembly with the second structure and the four rows of reference spraying can be upgraded to be the boom assembly with one or two rows of spraying: when the expansion is upgraded into a spray rod assembly with a plurality of spraying lines, after a left plug (9) needs to be removed, an expansion rod joint (35-1) of an expansion rod assembly is installed into a left expansion port (8) to form a spray rod left loose joint (36), the spray amplitude of an expansion rod spray head (35-2) of the expansion rod assembly (35) to a D line (3-3) of green Chinese onion is a left C spray amplitude (4-4), then a hole-free wafer of a right spare spray head (5) is replaced by a normal spray sheet, the right spare spray head (5) becomes a right D spray head (5-0-1) capable of normally spraying medicine, and the spray amplitude is a right C spray amplitude (4-5); or after the right plug (9-1) is removed, the expansion rod joint of the expansion rod component (35) is installed into the right expansion port (8-1) to form a spray rod right loose joint (36-1), the spray amplitude of the expansion rod spray head (35-2) in the row C of the scallion is right D spray amplitude (4-7), after the non-porous wafer of the left spare spray head (5-5) is replaced by a normal spray sheet, the left spare spray head becomes a left D spray head (5-5-1) capable of normally spraying medicine, and the spray amplitude is left D spray amplitude (4-6); when the expansion is upgraded into a spray rod assembly with more than two spraying lines, after a left plug (9) needs to be removed, an expansion rod joint (35-1) of an expansion rod assembly (35) is installed into a left expansion port (8) to form a spray rod left loose joint (36), the spray amplitude of an expansion rod spray head (35-2) of the expansion rod assembly (35) to a D row (3-3) of scallion is a left C spray amplitude (4-4), then a hole-free wafer of a right spare spray head (5) is replaced by a normal spray sheet, the right spare spray head (5) is changed into a right D spray head (5-0-1) capable of normally spraying, and the spray amplitude is a right C spray amplitude; and then, after the right plug (9-1) is removed, an expansion rod joint (35-1) of the expansion rod component (35) is installed into a right expansion port (8-1) to form a spray rod right loose joint (36-1), the spray amplitude of the expansion rod spray head (35-2) in the green Chinese onion row C (3-2) is a right D spray amplitude, after the non-porous wafer of the left spare spray head (5-5) is replaced by a normal spray piece, the left spare spray head (5-5) becomes a left D spray head (5-5-1) capable of normally spraying, and the spray amplitude is a left D spray amplitude (4-6).

7. The multi-row scanning and pesticide-spraying assembly for green Chinese onion according to claim 1 or 2, characterized in that the scanning nozzle is a fan-shaped atomizer or an adjustable conical atomizer, the side spraying width of the green Chinese onion row can be changed by adjusting the included angle between the fan-shaped atomizing surface and the vertical rod by using the fan-shaped atomizer, or the side spraying width of the green Chinese onion row can be changed by adjusting the atomizing angle of the adjustable conical atomizer, so that the covered green Chinese onion row can be scanned and sprayed efficiently, accurately and uniformly.

8. The multi-row scanning and pesticide spraying assembly for green Chinese onions according to claim 1 or 2, characterized in that when the spray rod assembly adopts a first structure and a second structure, the whole assembly comprises three movable joints, namely a push rod spray rod joint (27), a main rod spray rod joint (28) and a push rod handle joint, and the spray rod assembly is movably connected with the main rod assembly through the main rod spray rod joint (28); the spray rod assembly is movably connected with a push rod (26) in the main rod assembly through a push rod spray rod joint (27); a bolt penetrates through the rear end hole of the push rod and the front end hole of the handle (31) and then is locked by a locknut, so that a push rod handle joint (30) is formed.