CN211322012U

CN211322012U - Sugarcane seedling transplanter

Info

Publication number: CN211322012U
Application number: CN201921846531.7U
Authority: CN
Inventors: 张坚敏; 李仲忍; 李孟洪
Original assignee: Combination Of Guangxi Agricultural Machinery Co ltd
Current assignee: Combination Of Guangxi Agricultural Machinery Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-08-25
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a sugarcane kind seedling transplanter, include: a frame; a land wheel; and a transplanting mechanism, the transplanting mechanism comprising: a ditching device; seed metering device, its top that is located ditching device, seed metering device includes: a turntable horizontally arranged; the blocking frame is positioned right below the rotary table and is annular, and an opening is formed in the blocking frame; the rotary disc is uniformly provided with a plurality of seedling cups at positions corresponding to the upper part of the blocking frame, the bottom opening of each seedling cup is connected with a cover body capable of being turned over up and down, an elastic mechanism is arranged between the cover body and the cavity, the cover body is in a closed state under the blocking of the blocking frame in a normal state, and when the seedling cups on the rotary disc rotate to the openings of the blocking frame, the elastic mechanism enables the cover body to be turned over downwards to open the bottom openings of the cavity; and the soil covering device is positioned behind the ditching device. Adopt the utility model discloses a structure, improve equipment's life can be simplified to the transplanter.

Description

Sugarcane seedling transplanter

Technical Field

The utility model relates to the technical field of agricultural machinery, in particular to sugarcane seedling transplanter.

Background

The sugarcane seedlings comprise sugarcane seeds and sugarcane tissue culture seedlings, the sugarcane seeds are obtained by directly cutting reserved sugarcanes into multiple sections and planting the sugarcane seeds; the tissue culture seedling of sugarcane is a complete plant which is cultured under the aseptic and proper artificial conditions by using isolated organs, tissues or cells of a plant body and protoplasts according to the theory that plant cells have totipotency. When planting the sugarcane seedling, need transplant through the transplanter, transplant the sugarcane seedling to the sugarcane underground, but current transplanter structure is complicated, and the installation accuracy requires highly, and easy damage needs often to maintain and change spare part, influences the life of equipment.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sugarcane kind seedling transplanter to overcome the shortcoming that current transplanter's structure is complicated and life-span is low.

In order to achieve the above object, the utility model provides a sugarcane seedling transplanter, include: a frame; the land wheel is arranged at the bottom of the frame; and a transplanting mechanism mounted on the frame, the transplanting mechanism comprising: the ditching device is arranged at the bottom of the rack and used for excavating planting ditches; the seed metering device, its install in the frame and be located ditching device's top, this seed metering device includes: the turntable is horizontally arranged, can be rotatably arranged on the rack and is driven to rotate by the rotating mechanism; the blocking frame is arranged on the rack and is positioned right below the rotary table, the blocking frame is in a circular ring shape, and an opening corresponding to the ditching device is formed in the blocking frame; the seedling cups are uniformly arranged on the rotary disc at positions corresponding to the upper part of the blocking frame, each seedling cup is provided with a cavity for storing sugarcane seedlings, the top and the bottom of the cavity are both arranged in an open manner, the bottom opening of the cavity is connected with a cover body capable of being turned over up and down, an elastic mechanism is arranged between the cover body and the cavity, the cover body is in a closed state under the blocking action of the blocking frame in a normal state, and when the seedling cups on the rotary disc rotate to the opening of the blocking frame, the cover body is turned over downwards by the elastic mechanism to open the bottom opening of the cavity; and the soil covering device is arranged at the bottom of the rack and behind the ditching device and is used for covering soil on the planting ditch.

Preferably, among the above-mentioned technical scheme, the ditching device includes two ditching boards and two fender boards, two the front end interconnect of ditching board just is the backward V font of opening and distributes, two the front end that keeps off the board respectively with one the rear end that keeps off the board is connected, and two the face that keeps off the board is along fore-and-aft direction horizontal distribution, the opening that keeps off the frame is located two the top between the fender board.

Preferably, in the above technical scheme, the soil covering device includes a support and two soil covering disks, the upper end of the support is mounted on the frame in a manner that the height can be adjusted, each soil covering disk is mounted at the lower end of the support in a manner that the soil covering disk can rotate, and the two soil covering disks are distributed in a splayed shape with a forward opening.

Preferably, in the above technical solution, one end of the rotating mechanism is connected to the rotating shaft of the land wheel, and the other end is connected to the rotating shaft of the turntable.

Preferably, in the above technical solution, the number of the transplanting mechanisms is two, and the two transplanting mechanisms are installed on the left and right sides of the rack.

Preferably, in the above technical scheme, the transplanter further comprises a rotary tillage device, wherein the rotary tillage device is mounted at the bottom of the frame and in front of the transplanting mechanism and used for tillage and soil preparation.

Preferably, in the above technical solution, the rotary tillage device includes: a rotary blade shaft rotatably mounted on the frame, the rotary blade shaft having an axis distributed in a left-right direction and being driven to rotate by the rotary tillage mechanism; and a plurality of rotary tillage cutter bodies, the plurality of rotary tillage cutter bodies are evenly arranged on the rotary tillage cutter shaft, and each rotary tillage cutter body comprises a plurality of rotary tillage cutters and a plurality of rotary tillage cutters are evenly distributed along the axial direction of the rotary tillage cutter shaft.

Preferably, in the above technical scheme, the sugarcane seedling planting machine further comprises a fertilizing device, wherein the fertilizing device is installed at the top of the rack and used for fertilizing the planted sugarcane seedlings.

Preferably, in the above technical solution, the fertilizer applying apparatus includes: the fertilizer water tank is arranged at the top of the rack, liquid fertilizer is stored in the fertilizer water tank, and a water outlet is formed in the bottom of the fertilizer water tank; and the inlet of the intermittent water supply device is connected with the water outlet, and the water outlet of the intermittent water supply device is positioned between the seed metering device and the soil covering device.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a transplanter comprises a ditching device, a seed metering device and an earthing device, the seed metering device comprises a rotary disc, a blocking frame and a plurality of seedling cups, each seedling cup is provided with a sugarcane seedling, the frame moves forward to drive the ditching device to move forward and excavate planting ditches, and simultaneously the rotary disc is driven to rotate, thereby driving the seedling cups to rotate, when the corresponding seedling cup rotates to an opening on the blocking frame, a cover body at the bottom of the seedling cup is overturned downwards and opened under the action of an elastic mechanism, the sugarcane seedlings on the seedling cup fall into the planting ditches at the bottom through the opening at the bottom of the seedling cup and the opening of the blocking frame under the action of gravity, and the sugarcane seedlings can sink into the soil in the planting ditches under the action of gravity, so that the sugarcane seedlings are vertically arranged, and finally can be covered by the earthing of the earthing device, the sugarcane seedlings can be uniformly planted in the planting ditches through the movement of the frame and the rotation of the rotary disc, only need constantly to supply the sugarcane seedling in the seedling cup above the carousel can, simple structure has left out the duckbilled part on the traditional transplanter, improve equipment life.

2. The utility model discloses a transplanter still includes rotary cultivator attachment, loosens the soil and turns over the whole earlier to the soil before transplanting, smashes soil, is convenient for subsequent ditching and the planting operation of sugarcane seedling.

3. The utility model discloses a transplanter fertilizer injection unit still, fertilizer injection unit include fertile water tank and intermittent type water supply installation, water and fertilize earlier after sugarcane seedling plants, carry out the earthing operation again, improve the survival rate of sugarcane seedling, and clearance water supply installation can water and fertilize to single sugarcane seedling, do not need the continuity to supply fertile, save the resource.

Drawings

Fig. 1 is a schematic view of the main structure of the sugarcane seedling transplanter according to the utility model.

Fig. 2 is a schematic top view of fig. 1 according to the present invention.

Description of the main reference numerals:

1-a fertilizer water tank, 2-a frame, 3-a reduction box, 4-a rotary blade, 5-a rotary blade shaft, 6-a rotary blade body, 7-a ditching device, 8-an earthing disc, 9-a support, 10-a land wheel, 11-a seedling cup, 12-a reversing device, 13-a rotary disc, 14-a blocking frame, 15-a chain transmission mechanism, 16-a gear transmission mechanism and 17-a hexagonal shaft.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Fig. 1 to 2 show a schematic structural view of a sugarcane seed seedling transplanter according to a preferred embodiment of the present invention, which comprises a frame 2, ground wheels 10, a transplanting mechanism and a soil covering device. Referring to fig. 1 and 2, the ground wheels 10 are mounted at the bottom of the frame 2, the front end of the frame 2 is connected to a tractor through a three-point suspension device, and the frame 2 is driven to move by the movement of the tractor to perform transplanting operation. The transplanting mechanism is arranged on the rack 2 and comprises a ditching device 7, a seed metering device and an earthing device, and the transplanting mechanism moves along with the movement of the rack 2 so as to enable the transplanting mechanism to carry out operations such as ditching, seed metering planting, earthing and burying and the like while moving, and thus, the tissue culture surface of the sugarcane is uniformly transplanted to the sugarcane ground.

With continued reference to fig. 1 and 2, the ditching device 7 is installed at the bottom of the frame 2 and used for excavating the planting furrows, and the frame 2 moves forward to drive the ditching device 7 to move forward to excavate the planting furrows. Preferably, ditching device 7 includes two ditching boards and two retaining plates, the front end interconnect of two ditching boards and be the distribution of V word form after the opening, at its in-process that moves forward, the ditching board of two V word forms can be dialled soil to both sides about, form and plant the ditch, the front end of two retaining plates is connected with the rear end that a retaining plate respectively, and the face of two retaining plates is along fore-and-aft direction horizontal distribution, two retaining plate left and right parallel distribution promptly, in order to keep off soil on planting both sides about the ditch, prevent to plant the ditch about the soil of both sides and fold, the development of the planting work of the follow-up sugarcane seedling of being convenient for.

With continued reference to fig. 1 and 2, the seed discharging device is mounted on the frame 2 and above the ditching device 7, and the seed discharging device comprises a rotary table 13, a blocking frame 14, a plurality of seedling cups 11 and a soil covering device. Turntable 13 is horizontally disposed, turntable 13 is rotatably mounted on frame 2, and turntable 13 is driven to rotate by a rotating mechanism. Keep off frame 14 and install in frame 2 and be located carousel 13 under, keep off frame 14 and be the ring form, and keep off and set up an opening that corresponds the setting with ditching device 7 on the frame 14, keep off the opening of frame 14 promptly and be located two tops between the fender breast board to make the tissue culture seedling can drop to the planting ditch between two fender breast boards in the bottom through this opening. Carousel 13 is provided with a plurality of seedling cup 11 on the position that corresponds with the top that keeps off frame 14, namely a plurality of seedling cup 11 distribute along same circumferencial direction with keeping off frame 14, every seedling cup 11 is provided with the cavity that is used for depositing the sugarcane seedling, and the top and the bottom of cavity are the opening setting, the bottom opening of cavity is connected with the lid that can overturn from top to bottom, and be provided with elastic mechanism between lid and the cavity, under the normality, the lid receives the effect of keeping off frame 14 and is in closed state, when seedling cup 11 on carousel 13 rotates to the opening that keeps off frame 14, elastic mechanism makes the bottom opening of cavity is opened in the downward upset of lid of this seedling cup 11, so that the sugarcane seedling on this seedling cup 11 can drop to the planting ditch of bottom under the action of gravity, plant the sugarcane seedling. Wherein, the elastic mechanism can be a torsion spring structure. The earthing device is installed in the bottom of frame 2 and is located ditching device 7's rear, corresponds the setting with ditching device 7 back and forth for carry out earthing to the planting ditch and bury to carry out earthing to the root of sugarcane seedling. Preferably, earthing device includes support 9 and two earthing disc 8, and the upper end of support 9 is installed in frame 2 with the mode that height can be adjusted, and every earthing disc 8 is installed in the lower extreme of support 9 with the mode that can rotate, and two earthing disc 8 are the distribution of the forward eight characters of opening, moves forward through frame 2, drives two earthing disc 8 and rotates and move forward to the earthing disc 8 that makes two eight characters of distribution will plant the inside stirring of earth on both sides about the ditch. A hydraulic cylinder can be arranged between the frame 2 and the support 9, the support 9 is driven to swing up and down by adjusting the elongation of the hydraulic cylinder, so that the height of the soil covering disc 8 is adjusted, the thickness of the soil covering of the planting ditch is adjusted, and the soil covering disc 8 can be folded upwards to facilitate the movement of the transplanter; the frame 2 may be provided with a mounting sleeve, the upper end of the bracket 9 may be fitted in the mounting sleeve in a manner capable of sliding up and down, and the surface of the sleeve may be provided with a fixing bolt, and the bracket 9 may be loosened or fixed by rotating the fixing bolt, preferably, the mounting sleeve and the fixing bolt are provided.

With continued reference to fig. 1 and 2, preferably, the number of the transplanting mechanisms is two, and two transplanting mechanisms are installed at the left and right sides of the frame 2 and located at the left and right sides of the land wheel 10, i.e. the land wheel 10 is located between the two transplanting mechanisms, so that the transplanting machine can transplant two rows of sugarcane seedlings at a time, and the working efficiency is improved. It is further preferred that two ditching devices 7 are located between two rotary discs 13, and that two rotary discs 13 are rotated towards each other, i.e. the left rotary disc 13 is rotated clockwise and the right rotary disc 13 is rotated counterclockwise, so that the direction of rotation of rotary disc 13 is opposite to the advancing direction of ditching devices 7.

With continued reference to fig. 1 and fig. 2, the rotating mechanism may be driven by a motor, an output shaft of the motor is connected to a rotating shaft of the rotating disc 13, the rotating disc 13 is driven by the motor to rotate, and the rotating speed of the rotating disc 13 can be adjusted by the motor; the rotating mechanism can also be one or more of a gear transmission mechanism 16, a belt wheel transmission mechanism or a chain transmission mechanism 15, one end of the rotating mechanism is connected with the rotating shaft of the land wheel 10, the other end of the rotating mechanism is connected with the rotating shaft of the rotating disc 13, and the rotating force of the land wheel 10 is transmitted to the rotating disc 13 through the rotating mechanism to drive the rotating disc 13 to rotate. Preferably, the rotating mechanism is a gear transmission mechanism 16 and two chain transmission mechanisms 15, the input end of the gear transmission mechanism 16 is connected with the rotating shaft of the ground wheel 10, the output end of the gear transmission mechanism 16 is respectively connected with the input ends of the two chain transmission mechanisms 15 through a hexagonal shaft 17, the output ends of the two chain transmission mechanisms 15 are respectively connected with the rotating shaft of the rotating disc 13 of one transplanting mechanism through a reversing device 12, wherein the rotating speed of the rotating disc 13 is determined by the rotating speed of the ground wheel 10 and can be adjusted by adjusting the transmission ratio of the gear transmission mechanism 16, namely, the density of the transplanted sugarcane seedlings is determined by the rotating speed of the rotating disc 13, and the rotating speed of the rotating disc 13 can be determined by the transmission ratio of the gear transmission mechanism 16.

With continued reference to fig. 1 and 2, preferably, the transplanter further comprises a rotary tillage device, the rotary tillage device is mounted at the bottom of the frame 2 and located in front of the transplanting mechanism and used for soil preparation, soil loosening and soil preparation are performed on the soil before transplanting, the soil is smashed, and subsequent ditching and sugarcane seedling planting operations are facilitated. Preferably, the rotary tillage device comprises a rotary tillage cutter shaft 5 and a plurality of rotary tillage cutter bodies 6, the rotary tillage cutter shaft 5 is rotatably mounted on the frame 2, the axes of the rotary tillage cutter shaft 5 are distributed along the left-right direction, and the rotary tillage cutter shaft 5 is driven by the rotary tillage mechanism to rotate; a plurality of rotary blade body 6 is even sets up on rotary blade shaft 5, and every rotary blade body 6 includes a plurality of rotary blade 4, and a plurality of rotary blade 4 rotates through drive rotary blade shaft 5 along rotary blade shaft 5's axial evenly distributed, drives rotary blade 4 and rotates and plough. The rotary tillage mechanism can comprise a reduction gearbox 3, an input pump of the reduction gearbox 3 is connected with an output shaft of a tractor, an output shaft of the reduction gearbox 3 is connected with a rotary tillage cutter shaft 5 through a transmission mechanism, the rotary tillage cutter shaft 5 is driven by the tractor to rotate for tillage, and the transmission mechanism can be a chain transmission mechanism.

With continued reference to fig. 1 and 2, the transplanter preferably further comprises a fertilizing device mounted on top of the frame 2 for fertilizing the planted sugarcane seedlings. Preferably, the fertilizer applying device comprises a fertilizer water tank 1 and an intermittent water supply device, the fertilizer water tank 1 is installed at the top of the rack 2, the fertilizer water tank 1 stores liquid fertilizer, and a water outlet is formed in the bottom of the fertilizer water tank 1; the inlet of the intermittent water supply device is connected with the water outlet of the fertilizer water tank 1, and the water outlet of the intermittent water supply device is positioned between the seed metering device and the soil covering device so as to water and fertilize the planted sugarcane seedlings. When the number of the transplanting mechanisms is two, the water outlets of the gap water supply devices are respectively connected with the inlets of the two water supply pipes, and the outlets of the two water supply pipes are respectively positioned between the seed metering device and the soil covering device of one transplanting mechanism. Watering and fertilizing are firstly carried out after the sugarcane seedlings are planted, and then soil covering operation is carried out to improve the survival rate of the sugarcane seedlings, the gap water supply device can water and fertilize aiming at a single sugarcane seedling, continuous fertilizer supply is not needed, and resources are saved. Wherein, a water pump can be arranged at the water outlet of the fertilizer water tank 1 to provide the driving force of water flow and pump the liquid fertilizer in the fertilizer water tank 1 to the tissue culture surface of the sugarcane on the ground; or the horizontal plane of the fertilizer water tank 1 is higher than the horizontal plane of the gap water supply device, the driving force of water flow is provided by utilizing the height difference, and the liquid fertilizer in the fertilizer water tank 1 is conveyed to the sugarcane tissue culture surface on the ground, preferably, the horizontal plane of the fertilizer water tank 1 is higher than the horizontal plane of the gap water supply device. Further preferably, clearance water supply installation includes solenoid valve, controller and sensor, and the controller is connected with sensor and solenoid valve respectively, and the solenoid valve concatenates on fertile water tank 1's delivery port, and the sensor is used for detecting the planting condition of sugarcane seedling, when detecting that the sugarcane seedling falls to planting the ditch, gives the controller with planting signal transmission, and the solenoid valve is opened in the controller control, fertilizes for the sugarcane seedling.

The utility model discloses a rotary cultivator smashes soil earlier and loosens the soil, move forward through frame 2, drive ditching device 7 and move forward and excavate the planting ditch, drive carousel 13 simultaneously and rotate, thereby drive seedling cup 11 and rotate, when corresponding seedling cup 11 rotates to the opening on fender frame 14, the lid of this seedling cup 11 bottom overturns downwards under the effect of elastic mechanism and opens, the sugarcane seedling on the seedling cup 11 is under the action of gravity, drop to the planting ditch of its bottom through the opening of this seedling cup 11 bottom and the opening of fender frame 14, and this sugarcane seedling is under the action of gravity, its bottom can sink into the soil in the planting ditch, make its vertical setting, then fertilize the sugarcane seedling through fertilizer injection unit, cover through earthing device's earthing at last can, through the removal of frame 2 and the rotation of carousel 13, can be even toward planting the sugarcane seedling in the planting ditch, only need constantly to supply the sugarcane seedling in the seedling cup 11 above carousel 13 can, simple structure has left out the duckbilled part on the traditional transplanter, improve equipment life.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides a sugarcane kind seedling transplanter which characterized in that includes:

a frame;

the land wheel is arranged at the bottom of the frame; and

transplanting mechanism, it install in the frame, this transplanting mechanism includes:

the ditching device is arranged at the bottom of the rack and used for excavating planting ditches;

the seed metering device, its install in the frame and be located ditching device's top, this seed metering device includes:

the turntable is horizontally arranged, can be rotatably arranged on the rack and is driven to rotate by the rotating mechanism;

the blocking frame is arranged on the rack and is positioned right below the rotary table, the blocking frame is in a circular ring shape, and an opening corresponding to the ditching device is formed in the blocking frame; and

the seedling cup storage device comprises a rotary disc, a plurality of seedling cups, an elastic mechanism and a plurality of clamping frames, wherein the rotary disc is uniformly provided with the seedling cups at positions corresponding to the upper part of the clamping frames, each seedling cup is provided with a cavity for storing sugarcane seedlings, the top and the bottom of the cavity are both provided with openings, the bottom opening of the cavity is connected with a cover body capable of being turned over up and down, the elastic mechanism is arranged between the cover body and the cavity, the cover body is in a closed state under the blocking action of the clamping frames in a normal state, and when the seedling cups on the rotary disc rotate to the openings of the clamping frames, the cover body is turned over downwards to open the bottom openings of the cavities by the elastic mechanism; and

and the soil covering device is arranged at the bottom of the rack and behind the ditching device and is used for covering soil on the planting ditch.

2. The sugarcane seedling transplanter according to claim 1, wherein the furrowing device comprises two furrowing plates and two soil-retaining plates, the front ends of the two furrowing plates are connected with each other and arranged in a V-shape with a rearward opening, the front ends of the two soil-retaining plates are connected with the rear end of one soil-retaining plate, the surfaces of the two soil-retaining plates are horizontally arranged in the front-rear direction, and the opening of the blocking frame is located above the space between the two soil-retaining plates.

3. The sugarcane seedling transplanter according to claim 1, wherein the covering device comprises a support and two covering disks, the upper end of the support is mounted on the frame in a height-adjustable manner, each covering disk is rotatably mounted at the lower end of the support, and the two covering disks are distributed in a splayed manner with a forward opening.

4. The sugarcane seedling transplanter according to claim 1, wherein one end of the rotating mechanism is connected to the rotating shaft of the land wheel, and the other end of the rotating mechanism is connected to the rotating shaft of the rotary plate.

5. The sugarcane seedling transplanter according to claim 1, wherein the number of the transplanting mechanisms is two, and the two transplanting mechanisms are mounted on the left and right sides of the frame.

6. The sugarcane seedling transplanter according to claim 1, further comprising a rotary cultivator mounted to the bottom of the frame in front of the transplanting mechanism for tilling the ground.

7. The sugarcane seedling transplanter according to claim 6, wherein the rotary cultivator comprises:

a rotary blade shaft rotatably mounted on the frame, the rotary blade shaft having an axis distributed in a left-right direction and being driven to rotate by the rotary tillage mechanism; and

the rotary cultivator comprises a plurality of rotary cultivator cutter bodies, wherein the rotary cultivator cutter bodies are uniformly arranged on the rotary cultivator cutter shaft, and each rotary cultivator cutter body comprises a plurality of rotary cultivator cutters and a plurality of rotary cultivator cutters which are uniformly distributed along the axial direction of the rotary cultivator cutter shaft.

8. The sugarcane seedling transplanter according to claim 1, further comprising a fertilizer applicator mounted on the top of the frame for applying fertilizer to the planted sugarcane seedlings.

9. The sugarcane seed seedling transplanter according to claim 8, wherein the fertilizer application device comprises:

the fertilizer water tank is arranged at the top of the rack, liquid fertilizer is stored in the fertilizer water tank, and a water outlet is formed in the bottom of the fertilizer water tank; and

and the inlet of the intermittent water supply device is connected with the water outlet, and the water outlet of the intermittent water supply device is positioned between the seed metering device and the soil covering device.