Accurate water and fertilizer supply device and method for agricultural planting

Abstract

The invention relates to the technical field of crop root irrigation, in particular to an accurate water and fertilizer supply device and method for agricultural planting. The device comprises a flat car, a through hole is formed in one end of the flat car, a mixing cylinder is fixedly installed at the upper end of the flat car, a cover plate is fixedly installed at the upper end of the mixing cylinder, and a rotating cylinder is rotationally connected to the cover plate; the lower end of the rotary drum is inserted into the mixing drum, a stirring part is fixedly mounted at the outer end of the rotary drum, a long drum is fixedly mounted on one side of the lower end of the mixing drum, a cylinder is fixedly mounted at the outer end of the long drum, one end of the cylinder is located on the inner side of the long drum, and strip-shaped holes are uniformly formed in the side wall of the cylinder; a flat car is pushed to the upper end of a crop needing fertilization, a second motor is started, the second motor drives a large rotary disc and a small rotary disc to rotate at the same time, when a movable plate is pressed downwards through a rolling wheel, a piston moves to one end of a strip-shaped hole, and when a water outlet pipe is inserted into the rhizome of the crop, a hose starts to inject water and fertilizer into the water outlet pipe; the water fertilizer directly reaches the rhizome part of the crop.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crop root irrigation, in particular to a water and fertilizer precision supply device and method for agricultural planting. BACKGROUND

[0002] At present, the water and fertilizer is applied in the following ways: leaf spraying, stem spraying and root irrigation; due to the influence of light and rainfall, leaf spraying needs to be sprayed in the evening on sunny days; stem spraying is also prone to waste of the microbial agent due to the small stem adsorption area; root irrigation is a commonly used way, which has few constraints and high microbial agent utilization rate.

[0003] The existing microbial agent application device needs to lay a drip irrigation belt in the field in advance when using the drip irrigation method for application, which is too high in cost; if the traditional application device is used for topdressing of crops, the fertilizer particles are prone to uneven mixing in the device, which affects the application effect of the mixed liquid after mixing and stirring, and when the mixed liquid is discharged, it is directly discharged through the drain pipe, which is prone to the problem that some places are sprayed too much and some places are sprayed too little. SUMMARY

[0004] The present application aims to provide a water and fertilizer precision supply device and method for agricultural planting to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a water and fertilizer precision supply device for agricultural planting, comprising: a flat car, one end of the flat car is provided with a through hole, the upper end of the flat car is fixedly installed with a mixing cylinder, the upper end of the mixing cylinder is fixedly installed with a cover plate, the cover plate is rotatably connected with a rotating cylinder, the lower end of the rotating cylinder is inserted into the mixing cylinder, the outer end of the rotating cylinder is fixedly installed with a stirring part;

[0006] The lower end of the mixing cylinder is fixedly installed with a long cylinder on one side, the outer end of the long cylinder is fixedly installed with a cylinder, one end of the cylinder is located on the inner side of the long cylinder, and strip-shaped holes are uniformly formed on the side wall, and a piston is installed in the cylinder;

[0007] One end of the flat car is elastically connected with a moving plate, the lower end of the moving plate is fixedly installed with a water outlet pipe, the lower end of the water outlet pipe slides through the flat car, a hose is connected between the lower end of the water outlet pipe and the cylinder, and the moving plate and one side of the piston are provided with a driving part.

[0008] Preferably, the stirring part comprises stirring blades and a disc, the disc is located on the inner side of the cover plate, the rotating cylinder passes through the disc and is fixedly connected therewith, the stirring blades are fixedly installed at the lower end of the rotating cylinder, a limiting ring is arranged on the outer side of the disc, the limiting ring is fixed at the lower end of the cover plate, a shielding ring is fixedly installed at the lower end of the limiting ring, the shielding ring is located on the outer side of the disc, a plurality of protrusions are fixedly installed at the upper end of the disc, rolling balls are rollingly connected to the upper end of the protrusions, and the upper end of the rolling balls is rollingly connected to the lower end of the cover plate.

[0009] Preferably, the lower end of the disc is symmetrically fixed and installed with a fixed plate on both sides, the outer side of each fixed plate is provided with a mounting plate, the outer side of the mounting plate is fixedly installed with a scraper, and the fixed plate and the mounting plate are fixedly installed with a spring one and a telescopic rod.

[0010] Preferably, the lower end of the drum is uniformly provided with a plurality of water injection holes on the side wall, the top end of the drum is fixedly installed with a connecting port, the upper end of the drum is fixedly installed with a gear one, the upper end of the disc is fixedly installed with a motor one, the output end of the motor one is fixedly installed with a gear two, and the outer wall of the gear two is engaged with the gear one.

[0011] Preferably, the driving component comprises a shaft rod, the shaft rod passes through the front and rear end side walls of the long cylinder and is rotationally connected to the front and rear ends of the long cylinder through sealing bearings, the outer wall of the shaft rod is fixedly installed with a small turntable and a large turntable respectively, the small turntable is located in the long cylinder, the large turntable is located on one side of the upper end of the flat car, one end of the small turntable is rotationally connected with a rotating rod one, the other end of the rotating rod one is rotationally connected with a rotating rod two, and the other end of the rotating rod two is rotationally connected with one end of a piston.

[0012] Preferably, one end of the large turntable is rotationally connected with a rotating rod three, the other end of the rotating rod three is rotationally connected with a rotating rod four, the other end of the rotating rod four is rotationally connected with a roller, the outer wall of the rotating rod four is slidably sleeved with a limiting sleeve, and the lower end of the limiting sleeve is fixed to the upper end of the flat car.

[0013] Preferably, the side of the moving plate close to the roller is provided with an inclined slope, the lower end of the moving plate is fixedly installed with guide rods on four sides, the lower end of the guide rod is slidably passes through the side wall of the flat car, the outer wall of the guide rod is sleeved with a spring two, the lower end of the spring two is fixed to the upper end of the flat car, the upper end of the spring two is fixed to the lower end of the moving plate, one end of the water outlet pipe is fixedly installed with a connecting head, one end of the hose is fixedly sleeved on the connecting head, and the other end of the hose is fixedly sleeved on the outer end of the cylinder.

[0014] A method for using a water and fertilizer precision supply device for agricultural planting, comprising the following steps:

[0015] The nutrient solution is input into the rotating drum through the connecting port, and is mixed into the mixing cylinder through the water injection holes to form water and fertilizer, and then the motor one is started to fully mix the nutrient solution and water;

[0016] The flat car is pushed to the upper end of the crops that need to be fertilized, the motor two is started to drive the piston to reciprocate in the cylinder, the piston delivers the water and fertilizer into the hose, at the same time, the rotating rod four presses down the moving plate, the moving plate with the water outlet pipe is inserted into the root system of the crops, and the water and fertilizer flows into the root system of the crops.

[0017] Preferably, the motor two drives the shaft rod to rotate, the shaft rod drives the small disc and the large disc to rotate synchronously, the small disc drives the rotating rod one to reciprocate, the rotating rod one drives the rotating rod two to reciprocate, and the rotating rod two drives the piston to reciprocate in the cylinder, thereby delivering the water and fertilizer to the outside of the cylinder.

[0018] Preferably, the large disc drives the rotating rod three to reciprocate, the rotating rod three drives the rotating rod four to reciprocate with the roller, and the roller and the upper end of the moving plate are in contact, thereby pushing the moving plate and the water outlet pipe downward, and the lower end of the water outlet pipe is inserted into the root stem of the crops.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The present application pushes the flat car to the upper end of the crops to be fertilized, starts the motor two, and the motor two drives the large disc and the small disc to rotate simultaneously, the piston moves to one end of the strip-shaped hole when the roller pushes the moving plate downward, and the water outlet pipe is inserted into the root stem of the crops, so that the water and fertilizer are injected into the water outlet pipe, and the water and fertilizer reach the root stem of the crops. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the left view of the overall structure of the present application.

[0022] Figure 2 It is the right view of the overall structure of the present application.

[0023] Figure 3 It is the sectional view of the partial structure of the present application.

[0024] Figure 4 It is the lower end structure of the cover plate of the present application.

[0025] Figure 5 It is the structure diagram of the stirring part of the present application.

[0026] Figure 6 It is the right view of the driving structure of the present application.

[0027] Figure 7 It is the left view of the driving structure of the present application.

[0028] In the figure: 1, flatbed car; 2, through hole; 3, mixing drum; 4, cover plate; 5, long drum; 6, rotating drum; 7, water spray hole; 8, connection port; 9, stirring blade; 10, gear 1; 11, motor 1; 12, gear 2; 13, disc; 14, limit ring; 15, shielding ring; 16, bump; 17, ball; 18, fixing plate; 19, mounting plate; 20, scraper; 21, spring 1; 22, Telescopic rod; 23. Small turntable; 24. Shaft; 25. Large turntable; 26. Motor 2; 27. Rotating rod 1; 28. Rotating rod 2; 29. ​​Piston; 30. Cylinder; 31. Strip hole; 32. Rotating rod 3; 33. Rotating rod 4; 34. Limit sleeve; 35. Roller; 36. Moving plate; 37. Guide rod; 38. Spring 2; 39. Water outlet pipe; 40. Connector; 41. Hose. DETAILED DESCRIPTION

[0029] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figures 1 to 7 The present invention provides a technical solution: a precise water and fertilizer supply device for agricultural planting, comprising: a flatbed cart 1, a through hole 2 is opened at one end of the flatbed cart 1, the through hole 2 is convenient for a hose 41 to pass through and be connected to a water outlet pipe 39 at the lower end of the flatbed cart 1, a mixing drum 3 is fixedly installed on the upper end of the flatbed cart 1, a cover plate 4 is fixedly installed on the upper end of the mixing drum 3, a rotating drum 6 is rotatably connected to the cover plate 4, the lower end of the rotating drum 6 is inserted into the mixing drum 3, a stirring component is fixedly installed on the outer end of the rotating drum 6, a plurality of water spray holes 7 are evenly opened on the side wall of the lower end of the rotating drum 6, a connecting port 8 is fixedly installed on the top of the rotating drum 6, and the rotating drum 6 and the external water pipe can be rotatably connected through the connecting port 8 to inject water into the mixing drum 3.

[0031] The stirring component comprises stirring blades 9 and a disc 13 located on the inner side of the cover plate 4, the rotating drum 6 penetrates through the disc 13 and is fixedly connected with the disc 13, the stirring blades 9 are fixedly installed at the lower end of the rotating drum 6, the outer side of the disc 13 is provided with a limiting ring 14, the limiting ring 14 is fixedly installed at the lower end of the cover plate 4, the lower end of the limiting ring 14 is fixedly installed with a shielding ring 15, the shielding ring 15 is located on the outer side of the disc 13, the limiting ring 14 and the shielding ring 15 limit the disc 13 to make it rotate more stably, the upper end of the disc 13 is fixedly installed with a plurality of protrusions 16, the upper end of the protrusions 16 is rollingly connected with a ball 17, the upper end of the ball 17 is rollingly connected with the lower end of the cover plate 4, specifically, when the rotating drum 6 rotates, it drives the disc 13 and the stirring blades 9 to rotate synchronously, the stirring blades 9 mix various nutrient solutions and water in the mixing cylinder 3 to form water and fertilizer, when the disc 13 rotates, the lower end thereof is in contact with the upper end of the shielding ring 15, and the ball 17 at the upper end rotates on the lower end of the cover plate 4, so that the disc 13 rotates more stably.

[0032] The upper end of the rotating drum 6 is fixedly installed with a gear one 10, the upper end of the disc 13 is fixedly installed with a motor one 11, the output end of the motor one 11 is fixedly installed with a gear two 12, the gear two 12 is in meshing connection with the outer wall of the gear one 10, the motor one 11 drives the gear two 12 to rotate when it is started, the gear two 12 drives the gear one 10 to rotate when it rotates, the gear one 10 drives the rotating drum 6 to rotate, the lower end of the disc 13 is fixedly installed with a fixed plate 18 on the left and right sides symmetrically, the outer side of each fixed plate 18 is provided with a mounting plate 19, the outer side of the mounting plate 19 is fixedly installed with a scraper 20, the fixed plate 18 and the mounting plate 19 are fixedly installed with a spring one 21 and a telescopic rod 22, the spring one 21 pushes the mounting plate 19 and the scraper 20 outward, the scraper 20 is in contact with the inner wall of the mixing cylinder 3, the disc 13 drives the fixed plate 18 and the scraper 20 to rotate when it rotates, the scraper 20 scrapes the substances adhered to the inner wall of the mixing cylinder 3, especially when the mixing cylinder 3 is cleaned, the connecting port 8 is rotatably connected with an external water pipe, the water pipe injects water into the rotating drum 6, the water is sprayed to the inner wall of the mixing cylinder 3 through the water spraying holes 7, and the scraper 20 rotates with the rotating drum 6 to clean the mixing cylinder 3 completely.

[0033] The lower end of the mixing cylinder 3 is fixedly installed with a long cylinder 5, the long cylinder 5 is in communication with the inner end of the mixing cylinder 3, the outer end of the long cylinder 5 is fixedly installed with a cylinder 30, one end of the cylinder 30 is located on the inner side of the long cylinder 5, and strip-shaped holes 31 are uniformly formed in the side wall of the cylinder 30, and a piston 29 is installed in the cylinder 30, the piston 29 moves back and forth in the cylinder 30, and when the piston 29 moves to the side of the cylinder 30 close to the long cylinder 5, the water and fertilizer enters the cylinder 30 through the strip-shaped holes 31.

[0034] One end of the flat car 1 is elastically connected with a moving plate 36, the lower end of the moving plate 36 is fixedly installed with a water outlet pipe 39, the lower end of the water outlet pipe 39 slides through the flat car 1, the lower end of the water outlet pipe 39 and the cylinder 30 are connected with a hose 41, the side of the moving plate 36 close to the roller 35 is provided with a slope, the lower end of the four sides of the moving plate 36 is fixedly installed with a guide rod 37, the lower end of the guide rod 37 slides through the side wall of the flat car 1, the outer wall of the guide rod 37 is sleeved with a spring two 38, the lower end of the spring two 38 is fixed to the upper end of the flat car 1, the upper end of the spring two 38 is fixed to the lower end of the moving plate 36, the moving plate 36 moves downward with the water outlet pipe 39 by extruding the spring two 38, one end of the water outlet pipe 39 is fixedly installed with a connector 40, one end of the hose 41 is fixedly sleeved on the connector 40, the other end of the hose 41 is fixedly sleeved on the outer end of the cylinder 30, the hose 41 is located in the through hole 2, the length of the hose 41 is greater than the straight line distance between the cylinder 30 and the connector 40, the hose 41 can move up and down with the water outlet pipe 39.

[0035] The moving plate 36 and the piston 29 are provided with a driving component, the driving component includes a shaft 24, the shaft 24 passes through the front and rear end side walls of the long cylinder 5 and is rotatably connected with the front and rear ends of the long cylinder 5 through sealing bearings, the outer wall of the shaft 24 is fixedly installed with a small turntable 23 and a large turntable 25 respectively, the small turntable 23 is located in the long cylinder 5, the large turntable 25 is located on one side of the upper end of the flat car 1, one end of the small turntable 23 is rotatably connected with a rotating rod one 27, the other end of the rotating rod one 27 is rotatably connected with a rotating rod two 28, the other end of the rotating rod two 28 is rotatably connected with one end of the piston 29, so as to drive the piston 29 to reciprocate in the cylinder 30.

[0036] The outer side of one end of the large turntable 25 is rotatably connected with a rotating rod three 32, the other end of the rotating rod three 32 is rotatably connected with a rotating rod four 33, the other end of the rotating rod four 33 is rotatably connected with the roller 35, the outer wall of the rotating rod four 33 is slidably sleeved with a limiting sleeve 34, the lower end of the limiting sleeve 34 is fixed to the upper end of the flat car 1, since the diameter of the large turntable 25 is greater than the diameter of the small turntable 23, and the roller 35 is located at one end of the moving plate 36, when the roller 35 presses the moving plate 36 downward, the piston 29 moves to one end of the strip-shaped hole 31, when the water outlet pipe 39 is inserted into the root part of the crops, the hose 41 starts to inject water and fertilizer into the water outlet pipe 39, so that the water and fertilizer directly reach the root part of the crops.

[0037] Embodiment two: the embodiment provides a use method of the water and fertilizer precision supply device for agricultural planting, including the following steps:

[0038] The nutrient solution is input into the rotating drum 6 through the connecting port 8 and enters the mixing drum 3 through the water spray hole 7. It is mixed with the water in the mixing drum 3 to form water-fertilizer. Then, the motor 11 is started to fully mix the nutrient solution and water. The flatbed cart 1 is pushed to the upper end of the crops that need to be fertilized. The motor 26 is started to drive the piston 29 to move back and forth in the cylinder 30. The piston 29 transports the water and fertilizer into the hose 41. At the same time, the rotating rod 43 presses the movable plate 36 downward. The movable plate 36 is inserted into the root and rhizome of the crops with the water outlet pipe 39, and the water and fertilizer flow into the root and rhizome of the crops.

[0039] When motor 26 is started, it drives shaft 24 to rotate. When shaft 24 rotates, it drives small turntable 23 and large turntable 25 to rotate synchronously. When small turntable 23 rotates, it drives rotating rod 1 27 to move back and forth. Rotating rod 1 27 drives rotating rod 2 28 to move back and forth. Rotating rod 2 28 drives piston 29 to move back and forth in cylinder 30, transporting water and fertilizer to the outside of cylinder 30. When large turntable 25 rotates, it drives rotating rod 3 32 to rotate back and forth. Rotating rod 3 32 drives rotating rod 4 33 to move back and forth with roller 35. When roller 35 contacts the upper end of movable plate 36, it pushes movable plate 36 and water outlet pipe 39 downward, and the lower end of water outlet pipe 39 is inserted into the root and stem of crops.

[0040] When in use, the flatbed cart 1 is pushed to the upper end of the crops that need to be fertilized, and the motor 26 is started. The motor 26 drives the large turntable 25 and the small turntable 23 to rotate simultaneously. When the roller 35 presses the movable plate 36 downward, the piston 29 moves to one end of the strip hole 31. When the water outlet pipe 39 is inserted into the root of the crop, the hose 41 starts to inject water and fertilizer into the water outlet pipe 39, allowing the water and fertilizer to reach the root of the crop directly.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A precise water and fertilizer supply device for agricultural planting, comprising: A flatbed truck (1) is provided with a through hole (2) at one end of the flatbed truck (1), and is characterized in that a mixing drum (3) is fixedly mounted on the upper end of the flatbed truck (1), a cover plate (4) is fixedly mounted on the upper end of the mixing drum (3), a rotating drum (6) is rotatably connected to the cover plate (4), the lower end of the rotating drum (6) is inserted into the mixing drum (3), and a stirring component is fixedly mounted on the outer end of the rotating drum (6); A long cylinder (5) is fixedly mounted on one side of the lower end of the mixing cylinder (3), a cylinder (30) is fixedly mounted on the outer end of the long cylinder (5), one end of the cylinder (30) is located inside the long cylinder (5), and strip-shaped holes (31) are evenly opened on the side wall, and a piston (29) is mounted inside the cylinder (30); One end of the flatbed trolley (1) is elastically connected to a movable plate (36), a water outlet pipe (39) is fixedly installed at the lower end of the movable plate (36), the lower end of the water outlet pipe (39) slides through the flatbed trolley (1), a hose (41) is connected between the lower end of the water outlet pipe (39) and the cylinder (30), and a driving component is provided on one side of the movable plate (36) and the piston (29).

2. The precise water and fertilizer supply device for agricultural planting according to claim 1, characterized in that: The stirring component comprises a stirring blade (9) and a disc (13), the disc (13) is located on the inner side of the cover plate (4), the rotating drum (6) passes through the disc (13) and is fixedly connected to the disc (13), the stirring blade (9) is fixedly mounted on the lower end of the rotating drum (6), a limiting ring (14) is provided on the outer side of the disc (13), the limiting ring (14) is fixed to the lower end of the cover plate (4), a shielding ring (15) is fixedly mounted on the lower end of the limiting ring (14), the shielding ring (15) is located on the outer side of the disc (13), a plurality of protrusions (16) are fixedly mounted on the upper end of the disc (13), the upper end of the protrusion (16) is rollingly connected to a ball (17), and the upper end of the ball (17) is rollingly connected to the lower end of the cover plate (4).

3. The precise water and fertilizer supply device for agricultural planting according to claim 2, characterized in that: Fixed plates (18) are symmetrically fixedly installed on the left and right sides of the lower end of the disc (13), and a mounting plate (19) is provided on the outer side of each fixed plate (18). A scraper (20) is fixedly installed on the outer side of the mounting plate (19), and a spring (21) and a telescopic rod (22) are fixedly installed between the fixed plate (18) and the mounting plate (19).

4. The precise water and fertilizer supply device for agricultural planting according to claim 2, characterized in that: A plurality of water spray holes (7) are evenly arranged on the side wall of the lower end of the rotating drum (6), a connecting port (8) is fixedly installed on the top end of the rotating drum (6), a gear 1 (10) is fixedly installed on the outer side of the upper end of the rotating drum (6), a motor 1 (11) is fixedly installed on the upper end of the disc (13), a gear 2 (12) is fixedly installed on the output end of the motor 1 (11), and the gear 2 (12) is meshedly connected with the outer wall of the gear 1 (10).

5. The precise water and fertilizer supply device for agricultural planting according to claim 1, characterized in that: The driving component comprises a shaft (24), the shaft (24) passes through the front and rear end side walls of the long cylinder (5), and is rotatably connected to the front and rear end of the long cylinder (5) through a sealed bearing, a small turntable (23) and a large turntable (25) are fixedly mounted on the outer wall of the shaft (24), the small turntable (23) is located in the long cylinder (5), and the large turntable (25) is located on one side of the upper end of the flatbed car (1), one end of the small turntable (23) is rotatably connected to a rotating rod (27), the other end of the rotating rod (27) is rotatably connected to a rotating rod (28), and the other end of the rotating rod (28) is rotatably connected to one end of a piston (29).

6. The precise water and fertilizer supply device for agricultural planting according to claim 6, characterized in that: One end of the large turntable (25) is rotatably connected to a rotating rod three (32) on the outside, the other end of the rotating rod three (32) is rotatably connected to a rotating rod four (33), the other end of the rotating rod four (33) is rotatably connected to a roller (35), and a limiting sleeve (34) is slidably sleeved on the outer wall of the rotating rod four (33), and the lower end of the limiting sleeve (34) is fixed to the upper end of the flatbed vehicle (1).

7. The precise water and fertilizer supply device for agricultural planting according to claim 1, characterized in that: The movable plate (36) is provided with a slope on one side close to the roller (35), and guide rods (37) are fixedly installed on four sides of the lower end of the movable plate (36). The lower end of the guide rod (37) slides through the side wall of the flatbed car (1), and a second spring (38) is sleeved on the outer wall of the guide rod (37). The lower end of the second spring (38) is fixed to the upper end of the flatbed car (1), and the upper end of the second spring (38) is fixed to the lower end of the movable plate (36). One end of the water outlet pipe (39) is fixedly installed with a connector (40), one end of the hose (41) is fixedly sleeved on the connector (40), and the other end of the hose (41) is fixedly sleeved on the outer end of the cylinder (30).

8. A method for using the precise water and fertilizer supply device for agricultural planting according to any one of claims 1 to 7, characterized in that: The following steps are involved: The nutrient solution is fed into the rotating drum (6) through the connection port (8) and enters the mixing drum (3) through the water spray hole (7), and is mixed with the water in the mixing drum (3) to form a water-fertilizer. Then, the motor (11) is started to fully mix the nutrient solution and water. The flatbed cart (1) is pushed to the upper end of the crops that need to be fertilized, and the second motor (26) is started to drive the piston (29) to move back and forth in the cylinder (30). The piston (29) transports the water and fertilizer into the hose (41). At the same time, the fourth rod (33) is rotated to press the movable plate (36) downward. The movable plate (36) is inserted into the root and stem of the crops with the water outlet pipe (39), and the water and fertilizer flow into the root and stem of the crops.

9. The method for using the precise water and fertilizer supply device for agricultural planting according to claim 8, characterized in that: When the motor 2 (26) is started, the shaft (24) is driven to rotate. When the shaft (24) rotates, the small turntable (23) and the large turntable (25) are driven to rotate synchronously. When the small turntable (23) rotates, the first rotating rod (27) is driven to move back and forth. The first rotating rod (27) drives the second rotating rod (28) to move back and forth. The second rotating rod (28) drives the piston (29) to move back and forth in the cylinder (30), thereby transporting the water and fertilizer to the outside of the cylinder (30).

10. The method for using the precise water and fertilizer supply device for agricultural planting according to claim 9, characterized in that: When the large turntable (25) rotates, it drives the rotating rod three (32) to rotate back and forth, and the rotating rod three (32) drives the rotating rod four (33) to move back and forth with the roller (35). When the roller (35) contacts the upper end of the movable plate (36), the movable plate (36) and the water outlet pipe (39) are pushed downward, and the lower end of the water outlet pipe (39) is inserted into the root of the crop.

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