CN111296145A

CN111296145A - Citrus on-tree preservation method

Info

Publication number: CN111296145A
Application number: CN202010220793.3A
Authority: CN
Inventors: 周家琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-06-19

Abstract

The invention discloses a method for preserving citrus trees, which comprises the following steps: covering a protective film on the citrus tree; supporting the protective film by using a supporting rod; the citrus trees are uniformly arranged and comprise M rows of citrus trees, each row comprises N citrus trees, the N-1 th and N-th citrus trees in the M-1 th row and the N-1 th and N-th citrus trees in the M-1 th row are 4 citrus trees corresponding to a first quadrangle, the crown vertexes of the 4 citrus trees covered by the protective film are respectively 4 vertexes of the first quadrangle, each first quadrangle corresponds to a supporting rod, the lower end of each supporting rod is fixed on the ground, and the upper end of each supporting rod supports the lower surface of the protective film corresponding to the area where the first quadrangle is located; the method solves the problem that water is formed in the low-lying area of the protective film of the fruit tree, and the support rods are arranged below the protective film to eliminate the corresponding low-lying area, so that the water is prevented from being formed on the protective film, and the fruit tree and the protective film are prevented from being damaged.

Description

Citrus on-tree preservation method

Technical Field

The invention relates to the field of agricultural equipment, in particular to a method for keeping citrus on trees and keeping the citrus fresh.

Background

Citrus is used as an important economic crop in rural areas in the southwest, is planted in large area in Yunhuachuan, and comprises various kinds of oranges, such as Chunyun (also known as loquat safety), unknown fire and the like. However, wintering is often the time when the temperature is the lowest in a year, so that fruit growers need to take certain cold-proof measures to ensure that the fruit trees can live through the winter safely when leaving trees for preservation.

In the prior art, the existing cold-proof measures are mainly to cover cold-proof cloth. The prior methods refer to patents CN104106442A, CN108094004A and CN108812028A, and in these prior arts, a cold-proof cloth is covered to keep the citrus fresh.

For the tree-leaving and fresh-keeping of citrus, if the autumn tips are not aged and meet extremely low temperature, the climate can easily damage the autumn tips, the following flower bud differentiation and bearing mother branches in the next year are affected, finally, the production reduction and color difference of citrus are caused, and the yield and the fruit quality of an orchard are very unfavorable. Therefore, preparation must be made in advance, and the prior art for keeping trees fresh adopts a mode of covering a plastic film, and the plastic film can play a role in resisting cold, but the inventor of the application finds that the mode has the following technical problems in the implementation process:

referring to fig. 1, fig. 1 is a schematic top view showing a conventional plastic film forming a large area of water accumulation between several trees, 1 is a fruit tree, 2 is a protective film, and 3 is a water accumulation forming area, referring to fig. 2, and fig. 2 is a schematic side view; because a low-lying area exists among 4 trees and a low-lying area exists among 4 crowns, after raining, water is accumulated on a plastic film in the low-lying area, the water accumulation amount is larger and larger, stressed fruit trees are pressed, the fruit trees are damaged or the plastic film is broken, the plastic film cannot be used for the next year after being broken, and the fruit trees are damaged most by fruit growers.

Disclosure of Invention

In order to overcome the technical problems described in the background art, namely to solve the problem that a large area of accumulated water is formed in the low-lying area of the protective film of the fruit tree, the invention provides a method for preserving the citrus trees.

In order to achieve the aim, the invention provides a method for keeping citrus trees fresh, which comprises the following steps:

covering a protective film on the citrus tree;

supporting the protective film by using a supporting rod;

the citrus trees are uniformly arranged, and each row comprises N citrus trees, wherein N and M are integers greater than or equal to 2, the N-1 th citrus tree and the N-1 th citrus tree in the M-1 th row and the N-1 th citrus tree in the M th row are 4 citrus trees corresponding to a first quadrangle, the vertexes of crown of the 4 citrus trees covered by the protective film are respectively 4 vertexes of the first quadrangle, each first quadrangle corresponds to a support rod, the lower end of the support rod is fixed on the ground, and the upper end of the support rod supports the lower surface of the protective film corresponding to the area where the first quadrangle is located, wherein M is 1,2, … M, and N is 1,2, … N.

The principle of the invention is as follows: in order to achieve reasonable spacing and distribution during planting of citrus trees, the citrus trees are planted in a uniform arrangement mode, the spacing between every two adjacent citrus trees is usually 1-3 meters, the spacing between tree stumps is usually about 2 meters, so that growth is not influenced mutually, an inventor analyzes the prior art, and analyzes that the main reason for forming accumulated water on the protective film is the protective film between 4 adjacent fruit trees. The invention is based on the discovery of the problems, and then a plurality of support rods are designed to support the protective film of the low-lying areas, so that the accumulated water of each low-lying area is dispersed into a plurality of small-area accumulated water, the accumulated water amount of each low-lying area is reduced, the stress of the protective film of each low-lying area is weakened, and the protective film is well protected by the support rods.

In addition, the inventor of the application finds that the supporting by the supporting rod is the best scheme in the practical process, because the applicant also considers that other modes are adopted to eliminate the accumulated water, for example, a drain hole is formed in an area where the accumulated water is easy to generate, and the accumulated water cannot be formed if the drain hole is formed, but the inventor finds that a plurality of problems exist in a large drain hole in the practical process, and the first point is that the drain hole can increase the air intake amount below the protective film, so that the cold-proof effect is low; secondly, the protective film is in a stretching state and has tension when being laid, if the drain holes are formed, the drain holes are larger and larger due to the action of the tension or the tension, and the cold-proof effect is seriously reduced; thirdly, when the drainage pipe is used in the field, the drainage hole is blocked due to fallen leaves, impurities and the like, the drainage function is lost, and water accumulation is caused; fourthly, if the protective film is provided with the drain hole, the protective film cannot be recovered, because the drain hole cannot be quickly and accurately aligned to the position to be installed when the protective film is used in the next year, and fruit tree branches are easily inserted into the drain hole when the protective film is laid and recovered, so that the protective film is torn, and the protective film cannot be continuously used.

The support rod avoids punching, can decompose large accumulated water on the protective film into accumulated water with a small area, reduces the maximum pressure borne by the local protective film, is not damaged, can be recycled, does not need to be accurately aligned with the position of the hole when being laid, only needs the position of the support rod to be unchanged, can randomly adjust the position and the direction of the protective film, does not damage the protective film, does not punch, keeps the air intake stable, and has a good cold-proof effect.

Preferably, in the method, a straight line on which the shaft of the support rod is located passes through the first quadrangles, that is, each support rod corresponds to one first quadrangle respectively and supports the protective film of one area respectively. Preferably, the center of the first quadrangle is located on a straight line where the shaft of the supporting rod is located, the protective film at the center of the area is supported by the supporting rod through the design, and the effect that the large-area accumulated water in the low-lying area is decomposed into small-area accumulated water is better.

Preferably, in the method, the height of the upper end of the support rod is greater than or equal to the height of the crown top of the citrus tree, so that the height of the protective film supported by the support rod is greater than or equal to the height of the surrounding crown, and a large-area low-lying area is formed among the 4 crowns for decomposition or dispersion. The upper end of the supporting rod is usually designed to be higher than the top of the crown of the citrus tree, so that the aim of the design is to facilitate the smooth drainage of rainwater.

Preferably, the method further comprises: and adjusting the height of the supporting rod according to the height of the crown vertex of the citrus tree, so that the height of the upper end of the supporting rod is greater than or equal to the height of the crown vertex of the citrus tree.

In the method, the supporting rod is a telescopic supporting rod with adjustable height. Because the heights of fruit tree crowns in different areas and around the position are different, in order to improve the adaptability of the method, the supporting rod is a telescopic supporting rod with adjustable height, so that the length of the supporting rod can be adjusted according to actual requirements, the telescopic supporting rod can be specifically designed into a plurality of sections of supporting rods, each section of supporting rod is connected in a threaded fit manner, the depth of mutual connection embedding is adjusted through rotation, the length of the whole supporting rod is adjusted, the telescopic supporting rod can also be designed into two sections of supporting rods, wherein the two sections of supporting rods are cylindrical, a plurality of positioning holes which are arranged in the vertical direction are formed in the side surface of each supporting rod, one section of supporting rod is inserted into the other section of supporting rod, then the positioning nails penetrate through the positioning holes to be fixed, and the positioning nails are inserted into different. An electric telescopic rod or a pneumatic telescopic rod and the like can also be adopted.

Preferably, in the method, the method further comprises fixing the edge of the protective film on the ground by using fixing nails, the fixing nails are used for fixing the protective film to prevent the protective film from being blown away by wind, and the fixing nails penetrate through the protective film to fix the edge of the protective film on the ground.

Further, the method further comprises: each fruit of the citrus tree is separately sheathed with a protective bag. After the citrus trees are covered with the protective film, the fruit is covered with the protective bag for cold protection.

Further, the method further comprises: and (3) carrying out spray fertilization on the leaf surfaces of the citrus trees, wherein the spray adopts a mixed solution of monopotassium phosphate and brassinolide.

On one hand, the early-autumn young shoots or the early-winter young shoots which are not aged can play a good role in promoting aging; on the other hand, after the monopotassium phosphate is sprayed, the concentrations of phosphorus and potassium ions in the leaves are increased, the cold resistance of crops can be improved, and the effect of killing two birds with one stone is achieved.

Monopotassium phosphate contains 52% phosphorus and 34% potassium. The phosphorus element has obvious growth effect on roots, stems and fruit peels of crops, and also has obvious effect on enhancing disease resistance, cold resistance, waterlogging resistance and the like of the crops. The potassium element has obvious effects on improving crop yield, increasing fruit quality and improving sugar degree.

In the fruit expanding period, the fruit trees have the largest demand for potassium element, the potassium element applied by the base fertilizer is greatly consumed and utilized, and if ditching and fertilizing are carried out, the root systems of the fruit trees can be injured, so that the absorption of nutrition and water is influenced. Potassium dihydrogen phosphate is sprayed on the leaf surfaces, so that the potassium element can be quickly supplemented.

The potassium element plays an important role in the formation of carbohydrates. Fruit coloring is a process of forming anthocyanin, but the formation of anthocyanin has a direct relationship with sugar and sunlight, so if the coloring period potassium element is insufficient, the coloring effect is very large. Therefore, the potassium element plays a very critical role in coloring fruits. 300 times of potassium dihydrogen phosphate solution and 500 times of solution can be sprayed on the leaf surfaces at the early stage of fruit coloring.

Brassinolide is a novel green environment-friendly plant growth regulator, and can promote the growth of crops such as vegetables, melons, fruits and the like, improve the quality of the crops, increase the yield of the crops, enable the crops to be bright in color and luster and enable the leaves to be thicker and more solid through seed soaking with proper concentration and stem leaf spraying treatment. The tea leaf picking time can be advanced, and the melon and fruit can have higher sugar content, larger individual, higher yield and better storage stability.

Further, the method further comprises: the trunk of the citrus tree is whitened by adopting a whitening agent. The tree trunk is whitered, so that the tree trunk can be protected against cold, the plant diseases and insect pests on the tree trunk can be reduced, and the method is a good measure for fruit trees.

Further, the method further comprises: the method also comprises pruning branches of the citrus trees before the citrus trees are covered with the protective film. Before film covering, overlapped branches with higher density of diseased branches and dead branches are selected for pruning, and branches with too high and too wide growth are selected for pruning, so that diseases can be avoided on one hand, and a protective film can be prevented from being scraped.

Further, the method further comprises: and adjusting the height of the supporting rod according to the height of the crown vertex of the citrus tree, so that the height of the upper end of the supporting rod is greater than or equal to the height of the crown vertex of the citrus tree.

Further, the method further comprises: regularly supplementing water to the citrus trees covered with the protective film, and the method adopts an automatic water supply system to regularly and automatically supplement water to the citrus trees covered with the protective film, wherein the automatic water supply system comprises:

the device comprises a reservoir, a water pump, a power supply, a controller, a main water pipe, a flow divider, a plurality of sub water pipes, a spray head and an electric valve; the water pump is located the cistern, the power is used for supplying power for water pump and controller, the controller is used for controlling opening of water pump and stops and electric valve's switching, electric valve installs in main water pipe, main water pipe one end is connected with the water pump, the main water pipe other end passes through the flow divider and all is connected with a plurality of water pipes, every water pipe all corresponds a bracing piece, the water pipe is connected with the pole body of bracing piece, water pipe one end is connected with the flow divider, the water pipe other end is connected with the shower nozzle.

The inventors have also studied and found the following technical problems: the traditional method is to cover the protection film on the orange tree, but can lead to the circulation of air to weaken after covering the protection film, and the rainwater can't drip leaf and ground, finally lead to fruit tree blade water shortage, moisture content is low, air humidity reduces and leads to the blade atrophy, in order to solve above-mentioned technical problem, this method still includes adopting automatic water supply system to carry out the moisturizing, utilize automatic water supply system can supply water automatically, the leaf under the guarantee protection film can moisture be sufficient, air humidity is preferred, the fruit tree can have sufficient moisture, and then solve the problem of water shortage because of covering the protection film and leading to.

Wherein, the working method and the principle of the automatic water supply system are as follows: when needs supply water, electric valve is opened to the controller to open the water pump, during the water pump takes out the main water pipe with the water in the cistern, then through the flow divider with during moisture flow to a plurality of sub-water pipes, through the shower nozzle blowout at last, carry out the moisturizing to near the fruit tree of bracing piece, make leaf and root can both absorb moisture, water supply completion back controller closes water pump and electric valve.

Preferably, the controller is used for opening the water pump and the electric valve at regular time and automatically closing the water pump and the electric valve after the water pump and the electric valve are opened for a preset time, wherein the solar energy charging device can further comprise a solar panel, the solar panel is used for generating electricity to charge a power supply, and then the power supply is used for supplying power to the controller and the water pump, so that energy is saved, and the environment is protected.

Further, the method further comprises: the method comprises the following steps of carrying out traction protection on preset branches, carrying out traction protection on the preset branches by using traction structures, wherein each support rod is provided with at least one traction structure, and each traction structure comprises: the device comprises a clamp, a hand crank, a hook and a fixing rope;

the bracing piece is cylindric, and the bracing piece passes the clamp, and the clamp is used for the cover fastening to be fixed on the bracing piece, the hoop outer wall fixed connection of hand ware and clamp, wire rope wheel fixed connection in wire rope one end in the hand ware and the hand ware, the wire rope other end is connected with the couple, and the couple is used for catching on predetermineeing the oranges and tangerines branch, fixed rope one end and bracing piece fixed connection, and the fixed rope other end is used for the handle of fixed hand ware.

The inventor of the application further researches and discovers that the citrus fruit tree has the characteristic that fruit bearing is not uniform, namely, some branches have more fruits and some branches have less fruits, so that the branches with more fruits can be bent towards the ground due to the fact that the fruits are heavy, on one hand, the branches are easy to break, on the other hand, the branches are bent towards the ground, the fruits are easy to contact with the ground, and the fruits are rotten or damaged by contacting with the surface, so that the citrus fruit tree cannot be sold, and further loss is caused.

In order to solve the problems, the method also comprises the step of dragging the branches with larger load by adopting a traction structure, and the invention supports the branches with more fruits by utilizing the traction structure to prevent the branches from being broken or prevent the fruits of the branches from contacting the ground. The concrete realization mode and principle of the traction structure are as follows:

when a certain branch has more fruits, in order to avoid the branch from being broken or the fruits from contacting the ground, the problem is solved by using the traction structure of the invention, firstly, the hook is hooked on the branch, then the hand crank is shaken to drive one end of the steel wire rope, the branch is dragged through the steel wire rope to reduce the stress of the branch, then the hand crank is fixed by using the fixing rope to avoid the rotation of the hand crank, and the traction effect of the steel wire rope is ensured, so that the branch is not easy to break due to the stress reduction compared with the original branch, and the fruits are not easy to contact the ground, the hand crank is fixed on the supporting rod, the specific fixing mode is that the clamp is used for sheathing the supporting rod, then, the shell of the hand crank is fixedly connected with the outer wall of the clamp ring of the hand crank, so that the hand crank is fixed, and the scheme has corresponding technical advantages because the clamp is used for sheathing, the clamp is convenient to disassemble, so that the position, the height and the orientation of the clamp can be conveniently adjusted, and the problem of practical use can be fully solved.

Further, the method further comprises: fixing the support rod to prevent the support rod from inclining, fixing the support rod by using a fixing structure, wherein each support rod is correspondingly provided with one fixing structure, and each fixing structure comprises:

4 circular rings, a fixed base and 4 fixed rods; the unable adjustment base is cylindric, and the internal diameter size of drum matches with the external diameter size of bracing piece, and in the bracing piece lower extreme inserted unable adjustment base, 4 rings were established respectively to overlap and are fixed on the stump of 4 citrus trees that the bracing piece corresponds all around, and ring and dead lever one-to-one, dead lever one end and ring outer wall fixed connection, the dead lever other end and unable adjustment base outer wall fixed connection.

The inventor of the present application has found a problem in practical application, because the position and height of the branches with many fruits hung thereon are random in practical use, the overall stress on the support rod is uneven, because there is a possibility that there are more branches on the left side, traction is required at this time, and the support rod itself is subjected to corresponding reaction force, and for example, there are branches with more fruits on both the front side and the right side of the support rod, traction is required, which finally results in uneven overall stress on the support rod, and finally results in inclination or collapse of the support rod, which cannot achieve the purpose of supporting because the support rod is inserted into the ground, and the ground is soft.

In order to solve the technical problems, the invention designs a fixing structure for fixing a support rod and preventing the support rod from inclining, and the concrete implementation mode and principle of the fixing structure are as follows: at first 4 rings are respectively sleeved and fixed on the stumps of 4 citrus trees, the rings correspond to the fixing rods one to one, one end of each fixing rod is fixedly connected with the outer wall of the ring, the other end of each fixing rod is fixedly connected with the outer wall of the fixing base, the fixing base is fixed from 4 directions, the supporting rods are inserted into the fixing base and then fixed, the rings can be split into two semicircles and then are in butt joint, and the fixing rods are conveniently sleeved on the stumps.

Preferably, the method further comprises storing the protective film using a storage box. The protective film in the invention can be recycled without damage, and the protective film is placed in the storage box after being recycled, and is taken out for reuse in the next year, so that the recycling is convenient.

One or more technical schemes provided by the invention at least have the following technical effects or advantages:

(1) the method for preserving the preserved citrus trees can decompose large-area accumulated water formed on the protective film into a plurality of small-area accumulated water in small areas, reduces the stress of fruit trees, and protects fruits and the protective film by supporting the accumulated water with the supporting rods.

(2) The water supply system in the method can solve the problem of water shortage caused by covering the protective film.

(3) The traction structure in the method can support branches with more fruits, prevent the branches from being broken or prevent the fruits of the branches from contacting the ground, and further protect the branches and the fruits.

(4) The fixing structure in the method can fix the support rod to prevent the support rod from inclining.

(5) The protective film in the method can be recycled, under the protection of the method, the fruit tree has the cold-proof effect, and meanwhile, the fruit tree has the effects that a large area or a large area of accumulated water cannot be formed on the upper surface of the protective film, and the fruit tree covered by the protective film is free from water shortage.

(6) The method comprises the steps of fruit tree film covering, fruit bagging, trunk whitening, spraying and fertilizing on the leaf surfaces of the citrus trees and pruning branches, and the fruit tree cold-proof effect is good.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;

FIG. 1 is a schematic top view of a conventional citrus fruit tree preservation;

FIG. 2 is a schematic side view of a conventional citrus fruit tree-keeping preservation;

FIG. 3 is a schematic view of the structure of a citrus tree-keeping preservation method;

FIG. 4 is a schematic top view of the present method;

FIG. 5 is a schematic view of a first quadrilateral ABCD;

FIG. 6 is a schematic view of the staple configuration;

FIG. 7 is a schematic diagram of the composition of the automatic water supply system;

FIG. 8 is a schematic view of the towing configuration;

FIG. 9 is a schematic structural view of a fixing structure;

FIG. 10 is a schematic flow diagram of the present method;

the fruit tree water-retaining device comprises 1-a fruit tree, 2-a protective film, 3-a water accumulation forming area, 4-a support rod, 5-a fixing nail, 6-a water-retaining block, 7-a water storage tank, 8-a water pump, 9-a power supply, 10-a controller, 11-a main water pipe, 12-a flow dividing valve, 13-a sub water pipe, 14-a spray head, 15-an electric valve, 16-a hoop, 17-a hook, 18-a shell, 19-a hand-operated rod, 20-a rotating shaft, 21-a rope winding wheel, 22-a steel wire rope, 23-a fixing rope, 24-a circular ring, 25-a tree pile, 26-a fixing base and 27-a fixing rod.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

The first embodiment is as follows:

referring to fig. 10, the present invention provides a method for preserving citrus trees, which includes:

pruning branches of the citrus trees;

covering a protective film on the citrus tree;

supporting the protective film by using a supporting rod;

sheathing each fruit of the citrus tree with a protective bag;

carrying out spray fertilization on the leaf surfaces of citrus trees, wherein the spray adopts a mixed solution of monopotassium phosphate and brassinolide;

adopting a whitening agent to whiten the trunk of the citrus tree;

regularly supplementing water to the citrus trees covered with the protective film;

traction protection is carried out on branches with larger bearing capacity;

the support rod is fixed to prevent the support rod from being inclined.

Referring to fig. 3, a protective film 2 and a plurality of support rods 4, the protective film is used to cover a plurality of citrus trees 1, the plurality of citrus trees are arranged uniformly, and includes 3 rows of citrus trees, each row includes 4 citrus trees, the N-1 and N-th citrus trees in the M-1 row and the N-1 and N-th citrus trees in the M-1 row are 4 citrus trees corresponding to a first quadrangle, the crown vertexes of any 4 citrus trees covered by the protective film are respectively 4 vertexes of the first quadrangle, such as the first quadrangle ABCD in fig. 4 and 5, each first quadrangle corresponds to one support rod, the lower end of each support rod is fixed on the ground, and the upper end of each support rod supports the lower surface of the protective film corresponding to the area where the first quadrangle is located, where M is 1,2, … M, and N is 1,2, … N.

Referring to fig. 2, a large area or large area of accumulated water can be formed in the prior art, such as an accumulated water forming area 3 in fig. 2, the area of accumulated water formed in the area is large, the water storage amount is large, the weight is large, fruit tree branches can be easily crushed, and a protective film can be easily damaged, the accumulated water forming area 3 can be decomposed after the support rod in the device is adopted, referring to fig. 3-4, the original large area of accumulated water forming area 3 is decomposed into a plurality of small area water areas a, and because the area of the small area water areas a and the water storage amount are smaller than those of the accumulated water forming area 3 and the support of the support rod is provided, the stress of the protective film 2 is obviously reduced compared with that of the traditional method, the citrus branches are not easily damaged due to the reduction of stress, and the protective.

Referring to fig. 4, fig. 4 is a schematic top view of the device of the present invention, wherein the water area 3 having a large area is divided into a plurality of water areas a having a small area; referring to fig. 5, fig. 5 is a schematic diagram of a first quadrilateral ABCD, A, B, C, D being the crown vertices of 4 citrus trees.

In practical application, the protective film is a plastic film and can also be cold-proof cloth, and the cold-proof cloth has the following advantages: firstly, when the sun shines, diffuse reflection is formed, high-temperature sun protection and low-temperature heat preservation are achieved, and a good balanced heat preservation effect can be achieved. Not only the fruits are not easy to burn, but also the fruits have enough water and bright surfaces during the period of keeping the trees fresh. Secondly, the cold-proof cloth is made of hydrophobic and air-permeable materials, so that the orchard humidity is ensured to be proper, and the occurrence probability of plant diseases and insect pests is reduced.

In practical application, the supporting rod is a round rod, the supporting rod is made of stainless steel, the height of the upper end of the supporting rod is larger than or equal to the height of the top point of a crown of the citrus tree, the height of the supporting rod can be adjusted within a range of 1-3 meters, the citrus tree is usually trimmed, and the height of the citrus tree is usually below 3 meters.

Example two:

in the second embodiment of the present invention, the center of the first quadrangle is located on the straight line of the shaft of the support stick, and the rest of the first quadrangle is the same as that of the first embodiment.

Example three:

in a third embodiment of the present invention, on the basis of the first embodiment, the method for keeping citrus trees fresh further includes that if a plurality of fixing pins are used to fix the edge of the protective film on the ground, in order to ensure the fixing effect, the length of the fixing pins is usually 10-20CM, so that a part of the fixing pins can be inserted into the ground, and then a part of the fixing pins is remained on the ground, so that the fixing pins are inserted into the ground with sufficient length to ensure the fixing effect, and the remained part of the fixing pins is used to wind the protective film on the tops of the fixing pins to prevent the protective film from loosening after the fixing pins penetrate through the protective film, or an anti-loosening block can be designed on the tops of the fixing pins to prevent the protective film from loosening from the tops, please refer to fig. 6, and fig. 6 is a schematic structural diagram of the.

Example four:

in a fourth embodiment of the present invention, on the basis of the first embodiment, the method for preserving citrus trees further includes using an automatic water supply system to replenish water, and referring to fig. 7, the automatic water supply system includes:

the device comprises a reservoir 7, a water pump 8, a power supply 9, a controller 10, a main water pipe 11, a flow dividing valve 12, a plurality of sub water pipes 13, a spray head 14 and an electric valve 15; the water pump is located the cistern, the power is used for supplying power for water pump and controller, the controller is used for controlling opening of water pump and stops and electric valve's switching, electric valve installs in main water pipe, main water pipe one end is connected with the water pump, the main water pipe other end passes through the flow divider and all is connected with a plurality of water pipes, every water pipe all corresponds a bracing piece, the water pipe is connected with the pole body of bracing piece, water pipe one end is connected with the flow divider, the water pipe other end is connected with the shower nozzle.

The controller in the fourth embodiment of the present invention is a controller in the prior art, and can be automatically executed only by setting a time for opening at a fixed time and an opening duration program in advance in the controller, where the controller is configured to open the water pump and the electric valve at a fixed time, and automatically close the water pump and the electric valve after opening for a preset time, for example, opening once a week for 3 minutes each time.

Example five:

in a fifth embodiment of the present invention, on the basis of the first embodiment, the method for preserving citrus trees further includes: using a traction structure to pull the heavy branches, each support rod is provided with at least one traction structure, please refer to fig. 8, the traction structure includes: a hoop 16, a hand crank, a hook 17 and a fixed rope 23;

the hand-cranking device comprises: a shell 18, a hand rocker 19, a rotating shaft 20 and a rope winding wheel 21; the bracing piece is cylindric, and the bracing piece passes the clamp, and the clamp is used for the cover fastening to be fixed on the bracing piece, the hoop outer wall fixed connection of hand ware and clamp, 22 one ends of wire rope in the hand ware and the rope winding wheel fixed connection in the hand ware, the wire rope other end is connected with the couple, and the couple is used for catching on predetermineeing the oranges and tangerines branch, fixed rope one end and bracing piece fixed connection, and the fixed rope other end is used for the handle of fixed hand ware. When the hand-cranking device is provided with a transmission self-locking device, the hand-cranking device does not need a fixing rope for fixing. In practical application, the maximum pull-out length of the steel wire rope is required to be at least more than 2 meters, so that the distance requirement of a practical fruit tree field is met.

The hand crank in this embodiment may be a hand crank in the published patent document CN206784033U, and the detailed structure of the hand crank is not described in detail in this application.

Example six:

in a sixth embodiment of the present invention, with reference to fig. 9, on the basis of the fifth embodiment, each supporting rod is further provided with a fixing structure, and the fixing structure includes:

4 rings 24, a fixed

base

26 and 4 fixing rods 27; the unable adjustment base is cylindric, and the internal diameter size of drum matches with the external diameter size of bracing piece, and in the bracing piece lower extreme inserted unable adjustment base, 4 rings were established respectively to fix on the stump 25 of 4 citrus trees that the bracing piece corresponds all around, ring and dead lever one-to-one, dead lever one end and ring outer wall fixed connection, the dead lever other end and unable adjustment base outer wall fixed connection.

Wherein, the ring also can adopt the clamp or other can overlap and establish the part of fixing on the stump and replace, and is better for the fixed effect, unable adjustment base's height can be more than or equal to the one-third of bracing piece overall height, and the dead lever can adopt stainless steel.

Example seven:

wherein, in the seventh embodiment of the present invention, on the basis of the first embodiment, the method stores the protective film using a storage box.

Example eight:

in an eighth embodiment of the present invention, on the basis of the first embodiment, the method further includes adjusting the height of the supporting rod according to the height of the crown apex of the citrus tree, so that the height of the upper end of the supporting rod is greater than or equal to the height of the crown apex of the citrus tree.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A citrus tree-keeping and fresh-keeping method is characterized by comprising the following steps:

covering a protective film on the citrus tree;

supporting the protective film by using a supporting rod;

2. The citrus tree-keeping preservation method according to claim 1, further comprising: each fruit of the citrus tree is separately sheathed with a protective bag.

3. The method for preserving citrus trees according to claim 1, wherein the citrus trees are subjected to spray fertilization on the leaf surfaces, and the spray is a mixed solution of monopotassium phosphate and brassinolide.

4. The citrus tree-keeping preservation method according to claim 1, further comprising: the trunk of the citrus tree is whitened by adopting a whitening agent.

5. The method of claim 1, further comprising pruning the citrus tree branches prior to covering the citrus tree with the protective film.

6. The method of claim 1, further comprising adjusting the height of the support rod according to the crown apex height of the citrus tree such that the height of the upper end of the support rod is greater than or equal to the crown apex height of the citrus tree.

7. A method of preserving citrus trees according to any of claims 1 to 6, further comprising periodically replenishing citrus trees covered with a protective film, wherein the method comprises periodically and automatically replenishing citrus trees covered with a protective film using an automatic water supply system comprising:

8. A citrus tree-keeping preservation method according to any one of claims 1-6, further comprising traction protection of the predetermined branches, wherein the method uses traction structures for traction protection of the predetermined branches, and wherein at least one traction structure is mounted on each support bar, and wherein the traction structures comprise: the device comprises a clamp, a hand crank, a hook and a fixing rope;

9. A method of preserving citrus trees according to claim 8, further comprising securing the support rods against tilting, the method using securing structure to secure the support rods, each support rod having a securing structure, the securing structure comprising:

10. A citrus tree-keeping preservation method according to any one of claims 1-6, further comprising the use of staples for securing the edges of the protective film to the ground.