Fertilizing device with adjustable fertilizing depth for cotton cultivation and fertilizing method thereof

Abstract

This invention discloses an adjustable fertilization depth fertilization device and method for cotton cultivation. The fertilization device includes a fertilizer storage tank. Discharge pipes are fixedly installed at equal intervals at the bottom of the fertilizer storage tank. The top of the discharge pipes penetrates the fertilizer storage tank and extends to its inner surface. Movable grooves are formed on both sides of the discharge pipes, and movable shafts are movably installed inside each groove. Adjustable discharge pipes are movably installed on the surface of the discharge pipes. The inner sides of the adjustable discharge pipes are fixedly connected to one side of each movable shaft. A fertilization furrowing plow is fixedly installed at one end of each adjustable discharge pipe. Auxiliary discharge ramps are fixedly installed at both ends of the fertilizer storage tank. This invention allows for adjustment of the fertilization depth via the discharge pipes and adjustable discharge pipes, automatic height adjustment via a lifting push plate and pneumatic cylinder, and improved discharge smoothness via auxiliary discharge ramps and tilting shafts.

Description

Technical Field

[0001] This invention relates to the field of cotton cultivation technology, specifically to a fertilization device and fertilization method for cotton cultivation with adjustable fertilization depth. Background Technology

[0002] Cotton cultivation is an agricultural technology system centered on harvesting cotton fiber, encompassing standardized planting and field management throughout the entire process. It includes site selection and land preparation, seed selection and sowing, water and fertilizer management at each growth stage, weeding and pruning, pest and disease control, harvesting, and processing. Cotton is a deep-rooted cash crop that thrives in warm, sunny conditions. The core of its cultivation is to foster robust plants, balance growth, and reduce boll shedding, thereby increasing cotton yield and fiber quality. Adjusting the depth of fertilization is a crucial management aspect in cotton cultivation: cotton root systems change continuously with growth stages; during the seedling stage, roots are concentrated in the shallow soil, while during the flowering and boll-forming stage, roots extend into deeper soil layers. Dynamically adjusting the fertilization depth allows fertilizer to be precisely applied to the root system's active absorption layer, significantly improving nutrient utilization. Simultaneously, reasonable deep fertilization effectively prevents nitrogen volatilization and rainwater runoff, reducing planting costs. It also guides roots to grow deeper, fostering strong plants and enhancing cotton's drought and lodging resistance, preventing excessive vegetative growth or premature aging. Furthermore, scientifically controlling the fertilization depth can improve soil structure, optimize the rhizosphere growth environment, and prevent shallow or deep fertilizer runoff from causing soil and water pollution, balancing planting benefits with ecological protection. Therefore, a fertilization device and method with adjustable fertilization depth for cotton cultivation are needed.

[0003] When cultivating cotton, operators need to fertilize it, and corresponding cotton cultivation fertilization equipment is often used. Although the existing equipment can achieve the purpose of fertilization, it cannot adjust the fertilization depth in actual use, which may lead to low field operation efficiency, poor cotton root development, etc. In addition, it cannot adjust the fertilization output, and has certain limitations on the amount of fertilizer applied to different cotton varieties, thus reducing its practicality. Summary of the Invention

[0004] The purpose of this invention is to provide a fertilization device and method with adjustable fertilization depth for cotton cultivation, in order to solve the problem mentioned in the background art where operators need to fertilize cotton during cultivation. At this time, corresponding cotton cultivation fertilization equipment is often used. Although the existing equipment can achieve the purpose of fertilization, it cannot adjust the fertilization depth in actual use, which may result in low field operation efficiency, poor cotton root development, etc., and it cannot adjust the fertilization output, which has certain limitations on the amount of fertilizer applied to different cotton varieties, thus reducing its practicality.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fertilizer application device with adjustable fertilization depth for cotton cultivation, comprising a fertilizer storage box, wherein a feeding pipe is fixedly installed at equal intervals at the bottom of the fertilizer storage box, the top of the feeding pipe penetrates the fertilizer storage box and extends to the inner surface of the fertilizer storage box, movable grooves are provided on both sides of the feeding pipe, movable shafts are movably installed inside the movable grooves, and adjustable discharge pipes are movably installed on the surface of the feeding pipe, wherein the inner sides of the adjustable discharge pipe are respectively fixedly connected to one side of the movable shaft, a fertilizer furrowing plow is fixedly installed at one end of the adjustable discharge pipe, and auxiliary feeding ramps are fixedly installed at both ends of the inside of the fertilizer storage box; A connecting plate is fixedly installed at the other end of the regulating discharge pipe, and a lifting push plate is fixedly installed at one end of the connecting plate. The connecting plate and the lifting push plate are located at the bottom of the fertilizer storage box. The outer surfaces of the connecting plate and the lifting push plate are movably connected to the outer surface of the fertilizer storage box. An installation plate is fixedly installed at one end of the fertilizer storage box, and a pneumatic cylinder is fixedly installed on the top of the installation plate. The output end of the pneumatic cylinder passes through the installation plate and is fixedly connected to the top of the lifting push plate.

[0006] Preferably, a rotating shaft is rotatably installed on one side of the inside of the fertilizer storage box, a flipping shaft piece is fixedly sleeved on the surface of the rotating shaft, a motor is fixedly installed on one side of the fertilizer storage box, and the output end of the motor passes through the fertilizer storage box and is fixedly connected to one side of the rotating shaft.

[0007] Preferably, a guide rail is fixedly installed on the other side of the fertilizer storage box. Movable rods are movably installed at both ends of the guide rail surface. Adjusting plates are fixedly installed at the bottom of each movable rod. The adjusting plates are located at the bottom of the fertilizer storage box. The outer surface of the adjusting plates is movably connected to the inner surface of the fertilizer storage box and to the outer surface of the auxiliary feeding ramp. A limiting groove is provided on the other side of the fertilizer storage box. Connecting rods are movably installed at both ends of the limiting groove. One side of each connecting rod is fixedly connected to one side of the movable rod, and a movable plate is fixedly installed on the other side of each connecting rod.

[0008] Preferably, clamping plates are fixedly installed on the other side of the fertilizer storage box, and a bidirectional threaded rod is rotatably installed between the clamping plates. A movable sleeve plate is threaded onto both ends of the surface of the bidirectional threaded rod. The top of the movable sleeve plate is fixedly connected to the bottom of the movable plate. The outer surfaces of the movable sleeve plate and the movable plate are movably connected to the outer surface of the fertilizer storage box. An adjusting handle is rotatably installed on one end of the clamping plate, and one end of the adjusting handle passes through the clamping plate and is fixedly connected to one end of the bidirectional threaded rod.

[0009] Preferably, the top of the fertilizer storage box is hinged with a closed movable door, and an adjustment handle is fixedly installed on the top of the closed movable door.

[0010] Preferably, a central pull rod is movably installed at one end of the fertilizer storage box, and left and right pull rods are movably installed at one end of the fertilizer storage box, with the left and right pull rods located below the central pull rod.

[0011] Preferably, a fertilization method for cotton cultivation with adjustable fertilization depth includes the following steps: S1. First, the operator can place the fertilizer inside the fertilizer storage box. Then, the operator can pull the closing door by adjusting the handle until the bottom of the closing door reaches the top of the fertilizer storage box, thus closing the fertilizer storage box. Then, connect the central lever and the left and right lower levers to the tractor or other machinery. The operator starts the motor, which drives the rotating shaft to rotate. The rotating shaft then drives the flipping axle to rotate, thus flipping the fertilizer to prevent it from caking inside the fertilizer storage box.

[0012] S2. Then, the operator rotates the adjustment handle. The rotation of the adjustment handle will cause the bidirectional threaded rod to rotate, which in turn will cause the two moving sleeves to slide. Subsequently, the moving sleeves will cause the movable plate to slide, and the movable plate will cause the connecting rod to slide inside the limiting groove. Subsequently, the connecting rod will cause the moving rod to slide inside the fertilizer storage box and on the surface of the guide rail. Finally, the moving rod will cause the adjustment plate to slide, thereby adjusting the opening degree of the discharge pipe.

[0013] S3. Finally, the operator activates the pneumatic cylinder. The operation of the pneumatic cylinder will push the lifting push plate to slide, which in turn will drive the connecting plate to slide. Subsequently, the connecting plate will drive the adjusting discharge pipe to slide, and then the adjusting discharge pipe will slide on the surface of the discharge pipe. At this time, the adjusting discharge pipe will drive the moving shaft to slide, and then the moving shaft will slide inside the moving groove until the adjusting discharge pipe reaches the appropriate depth. At this time, the fertilizer inside the fertilizer storage box will slide off the surface of the auxiliary discharge ramp into the inside of the discharge pipe. Then, the fertilizer inside the discharge pipe will fall into the depth of the soil through the adjusting discharge pipe, thus adjusting the fertilization depth.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention relates to an adjustable fertilization depth device and method for cotton cultivation. During daily use, the adjustable discharge pipe slides on the surface of the feed pipe. The sliding depth of the adjustable discharge pipe is limited by a moving groove and a moving shaft, allowing for precise adjustment of the fertilization depth to match the soil layer distribution of cotton roots at different stages, guiding the main root downwards and reducing the probability of lodging and premature aging. A pneumatic cylinder pushes a lifting push plate, which in turn drives the adjustable discharge pipe to slide automatically via a connecting plate, thus automatically adjusting the height of the discharge pipe. The adjustment operation is simple; a single person can complete the gear switching from the tractor cab, resulting in high field operation efficiency.

[0015] This invention relates to an adjustable fertilization depth fertilization device and method for cotton cultivation. During daily use, the operation of the motor causes the rotating shaft and the flipping shaft to rotate, thereby flipping the fertilizer inside the fertilizer storage box and reducing caking. The inclined design of the auxiliary feeding ramp also improves the smoothness of fertilizer discharge. The invention can adjust the fertilization depth through the feeding pipe and the adjustable discharge pipe, and automatically adjust the height through the lifting push plate and the pneumatic cylinder. Furthermore, the auxiliary feeding ramp and the flipping shaft improve the smoothness of discharge.

[0016] This invention relates to an adjustable fertilization depth fertilization device and method for cotton cultivation. During daily use, the moving rod can slide inside the fertilizer storage box and on the surface of the guide rail. The moving rod will then drive the adjusting plate to slide, thereby controlling the opening degree of the feed pipe. The moving rod can be slid by a bidirectional threaded rod, a moving sleeve plate, and a movable plate, thereby adjusting the position of the moving rod and adjusting the adjusting plate, thus adjusting the unit fertilizer output and controlling different fertilizer amounts for different cotton varieties. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention; Figure 2 This is a front sectional view of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of a section at point B in the middle; Figure 5 This is a side sectional view of the present invention.

[0018] In the diagram: 1. Fertilizer storage bin; 2. Feeding pipe; 3. Moving trough; 4. Moving shaft; 5. Adjusting discharge pipe; 6. Fertilizer ditching plow; 7. Auxiliary feeding ramp; 8. Connecting plate; 9. Lifting push plate; 10. Mounting plate; 11. Pneumatic cylinder; 12. Rotating shaft; 13. Tilting shaft; 14. Motor; 15. Guide rail; 16. Moving rod; 17. Adjusting plate; 18. Limiting groove; 19. Connecting rod; 20. Movable plate; 21. Clamping plate; 22. Two-way threaded rod; 23. Moving sleeve; 24. Adjusting handle; 25. Enclosing movable door; 26. Adjusting handle; 27. Central pull rod; 28. Left and right pull rods. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please see Figures 1-5 A fertilizer application device for cotton cultivation with adjustable fertilization depth includes a fertilizer storage box 1. A feeding pipe 2 is fixedly installed at equal intervals at the bottom of the fertilizer storage box 1. The top of the feeding pipe 2 penetrates the fertilizer storage box 1 and extends to the inner surface of the fertilizer storage box 1. Movable grooves 3 are opened on both sides of the feeding pipe 2. Movable shafts 4 are movably installed inside the movable grooves 3. Adjustable discharge pipes 5 are movably installed on the surface of the feeding pipe 2. The two sides of the inside of the adjustable discharge pipe 5 are fixedly connected to one side of the movable shaft 4. A fertilizer ditching plow head 6 is fixedly installed at one end of the adjustable discharge pipe 5. Auxiliary feeding ramps 7 are fixedly installed at both ends of the inside of the fertilizer storage box 1. A connecting plate 8 is fixedly installed at the other end of the discharge pipe 5. A lifting push plate 9 is fixedly installed at one end of the connecting plate 8. The connecting plate 8 and the lifting push plate 9 are located at the bottom of the fertilizer storage box 1. The outer surfaces of the connecting plate 8 and the lifting push plate 9 are movably connected to the outer surface of the fertilizer storage box 1. An installation plate 10 is fixedly installed at one end of the fertilizer storage box 1. A pneumatic cylinder 11 is fixedly installed at the top of the installation plate 10. The output end of the pneumatic cylinder 11 passes through the installation plate 10 and is fixedly connected to the top of the lifting push plate 9. A rotating shaft 12 is rotatably installed on one side of the inside of the fertilizer storage box 1. A flipping shaft piece 13 is fixedly sleeved on the surface of the rotating shaft 12. A motor 14 is fixedly installed on one side of the fertilizer storage box 1. The output end of the motor 14 passes through the fertilizer storage box 1 and is fixedly connected to one side of the rotating shaft 12.

[0021] In this invention, the operator activates the pneumatic cylinder 11. The operation of the pneumatic cylinder 11 pushes the lifting push plate 9 to slide, which in turn causes the connecting plate 8 to slide. Subsequently, the connecting plate 8 causes the adjusting discharge pipe 5 to slide, and then the adjusting discharge pipe 5 slides on the surface of the discharge pipe 2. At this time, the adjusting discharge pipe 5 causes the moving shaft 4 to slide, and then the moving shaft 4 slides inside the moving groove 3 until the adjusting discharge pipe 5 reaches a suitable depth. At this point, the fertilizer inside the fertilizer storage box 1 slides off the surface of the auxiliary discharge ramp 7 into the discharge pipe 2. The fertilizer inside the feed pipe 2 will fall into the depth of the soil through the regulating discharge pipe 5, so the fertilization depth can be adjusted. The operator starts the motor 14, which drives the rotating shaft 12 to rotate. Then the rotating shaft 12 drives the flipping shaft 13 to rotate, so as to flip the fertilizer to prevent it from caking inside the fertilizer storage box 1. The fertilization depth can be adjusted by the feed pipe 2 and the regulating discharge pipe 5, and the height can be automatically adjusted by the lifting push plate 9 and the pneumatic cylinder 11. The smoothness of the discharge is further improved by the auxiliary feed inclined platform 7 and the flipping shaft 13.

[0022] Example 2: Please see Figures 1-5 A fertilizer application device for cotton cultivation with adjustable fertilization depth is disclosed. A guide rail 15 is fixedly installed on one side of the interior of a fertilizer storage tank 1. Moving rods 16 are movably installed at both ends of the surface of the guide rail 15. Adjusting plates 17 are fixedly installed at the bottom of each moving rod 16. The adjusting plates 17 are located at the bottom of the interior of the fertilizer storage tank 1. The outer surface of the adjusting plates 17 is movably connected to the inner surface of the fertilizer storage tank 1, and the outer surface of the adjusting plates 17 is movably connected to the outer surface of the auxiliary feeding ramp 7. A limiting groove 18 is provided on the other side of the fertilizer storage tank 1. Connecting rods 19 are movably installed at both ends of the limiting groove 18. One side of the connecting rod 19 is connected to the moving rod 16. One side of the rod 16 is fixedly connected, and the other side of the connecting rod 19 is fixedly installed with a movable plate 20. The other side of the fertilizer storage box 1 is fixedly installed with a clamping plate 21. A bidirectional threaded rod 22 is rotatably installed between the clamping plates 21. Both ends of the surface of the bidirectional threaded rod 22 are threaded with a movable sleeve plate 23. The top of the movable sleeve plate 23 is fixedly connected to the bottom of the movable plate 20. The outer surfaces of the movable sleeve plate 23 and the movable plate 20 are movably connected to the outer surface of the fertilizer storage box 1. An adjusting handle 24 is rotatably installed at one end of the clamping plate 21, and one end of the adjusting handle 24 passes through the clamping plate 21 and is fixedly connected to one end of the bidirectional threaded rod 22.

[0023] In this invention, the operator rotates the adjustment handle 24, which causes the bidirectional threaded rod 22 to rotate. The bidirectional threaded rod 22 then drives the two movable sleeves 23 to slide. Subsequently, the movable sleeves 23 drive the movable plate 20 to slide, and the movable plate 20 drives the connecting rod 19 to slide inside the limiting groove 18. The connecting rod 19 then drives the movable rod 16 to slide inside the fertilizer storage box 1 and on the surface of the guide rail 15. The movable rod 16 then drives the adjustment plate 17 to slide, thus adjusting the opening of the discharge pipe 2 and the unit fertilizer output, thereby controlling different fertilizer amounts for different cotton varieties.

[0024] Example 3: Please see Figures 1-5 A fertilizer application device for cotton cultivation with adjustable fertilization depth, wherein the top of the fertilizer storage box 1 is hinged with a closed movable door 25, and an adjustment handle 26 is fixedly installed on the top of the closed movable door 25; a central pull rod 27 is movably installed at one end of the fertilizer storage box 1; and left and right lower pull rods 28 are movably installed at one end of the fertilizer storage box 1, with the left and right lower pull rods 28 located below the central pull rod 27.

[0025] In this invention, the operator can place fertilizer inside the fertilizer storage box 1, and then pull the closed movable door 25 by adjusting the handle 26 until the bottom of the closed movable door 25 reaches the top of the fertilizer storage box 1, thus closing the fertilizer storage box 1. Conversely, pulling it open will keep it closed. Then, the central pull rod 27 and the left and right lower pull rods 28 are connected to the tractor or other machinery respectively. It adopts a three-point suspension method, which can hydraulically lift and lower the machine for labor-saving operation. It can follow the shape to ensure uniform sowing depth, make turning flexible and highly stable, reduce transmission loss, and has universal interfaces and better transportation and driving safety.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fertilizer application device with adjustable fertilization depth for cotton cultivation, comprising a fertilizer storage tank (1), characterized in that: The bottom of the fertilizer storage box (1) is fixedly equipped with a feeding pipe (2) at equal intervals. The top of the feeding pipe (2) penetrates the fertilizer storage box (1) and extends to the inner surface of the fertilizer storage box (1). The feeding pipe (2) has a moving groove (3) on both sides. The moving groove (3) is movably installed with a moving shaft (4) inside. The surface of the feeding pipe (2) is movably installed with an adjusting discharge pipe (5). The two sides inside the adjusting discharge pipe (5) are fixedly connected to one side of the moving shaft (4). One end of the adjusting discharge pipe (5) is fixedly installed with a fertilizer ditching plow (6). The two ends inside the fertilizer storage box (1) are fixedly installed with an auxiliary feeding ramp (7). A connecting plate (8) is fixedly installed at the other end of the regulating discharge pipe (5). A lifting push plate (9) is fixedly installed at one end of the connecting plate (8). The connecting plate (8) and the lifting push plate (9) are located at the bottom of the fertilizer storage box (1). The outer surfaces of the connecting plate (8) and the lifting push plate (9) are movably connected to the outer surface of the fertilizer storage box (1). An installation plate (10) is fixedly installed at one end of the fertilizer storage box (1). A pneumatic cylinder (11) is fixedly installed on the top of the installation plate (10). The output end of the pneumatic cylinder (11) passes through the installation plate (10) and is fixedly connected to the top of the lifting push plate (9).

2. The fertilization equipment for cotton cultivation with adjustable fertilization depth according to claim 1, characterized in that: A rotating shaft (12) is rotatably installed on one side of the inside of the fertilizer storage box (1). A rotating shaft piece (13) is fixedly sleeved on the surface of the rotating shaft (12). A motor (14) is fixedly installed on one side of the fertilizer storage box (1), and the output end of the motor (14) passes through the fertilizer storage box (1) and is fixedly connected to one side of the rotating shaft (12).

3. The fertilization equipment for cotton cultivation with adjustable fertilization depth according to claim 1, characterized in that: A guide rail (15) is fixedly installed on the other side of the inside of the fertilizer storage box (1). A moving rod (16) is movably installed at both ends of the surface of the guide rail (15). An adjusting plate (17) is fixedly installed at the bottom of the moving rod (16). The adjusting plate (17) is located at the bottom of the inside of the fertilizer storage box (1). The outer surface of the adjusting plate (17) is movably connected to the inner surface of the fertilizer storage box (1). The outer surface of the adjusting plate (17) is movably connected to the outer surface of the auxiliary feeding ramp (7). A limiting groove (18) is opened on the other side of the fertilizer storage box (1). A connecting rod (19) is movably installed at both ends of the inside of the limiting groove (18). One side of the connecting rod (19) is fixedly connected to one side of the moving rod (16), and a moving plate (20) is fixedly installed on the other side of the connecting rod (19).

4. The fertilization equipment for cotton cultivation with adjustable fertilization depth according to claim 1, characterized in that: On the other side of the fertilizer storage box (1), clamps (21) are fixedly installed. A double-threaded rod (22) is rotatably installed between the clamps (21). A movable sleeve (23) is threaded onto both ends of the surface of the double-threaded rod (22). The top of the movable sleeve (23) is fixedly connected to the bottom of the movable plate (20). The outer surfaces of the movable sleeve (23) and the movable plate (20) are movably connected to the outer surface of the fertilizer storage box (1). An adjusting handle (24) is rotatably installed on one end of the clamp (21), and one end of the adjusting handle (24) passes through the clamp (21) and is fixedly connected to one end of the double-threaded rod (22).

5. The fertilization equipment for cotton cultivation with adjustable fertilization depth according to claim 1, characterized in that: The top of the fertilizer storage box (1) is hinged with a closed movable door (25), and an adjustment handle (26) is fixedly installed on the top of the closed movable door (25).

6. The fertilization device for cotton cultivation with adjustable fertilization depth according to claim 1, characterized in that: A central pull rod (27) is movably installed at one end of the fertilizer storage box (1), and left and right pull rods (28) are movably installed at one end of the fertilizer storage box (1), with the left and right pull rods (28) located below the central pull rod (27).

7. A fertilization method for cotton cultivation with adjustable fertilization depth, based on claims 1-6. Its characteristics are: Includes the following steps: S1. First, the operator can place the fertilizer inside the fertilizer storage box (1). Then, the operator can pull the closed movable door (25) by adjusting the handle (26) until the bottom of the closed movable door (25) reaches the top of the fertilizer storage box (1), so that the fertilizer storage box (1) is closed. Then, the central pull rod (27) and the left and right lower pull rods (28) are connected to the tractor or other machinery respectively. The operator starts the motor (14), and the motor (14) will drive the rotating shaft (12) to rotate. Then the rotating shaft (12) will drive the flipping shaft (13) to rotate, so that the fertilizer can be flipped to prevent caking inside the fertilizer storage box (1). S2. Then the operator rotates the adjustment handle (24). The rotation of the adjustment handle (24) will cause the bidirectional threaded rod (22) to rotate. Subsequently, the bidirectional threaded rod (22) will drive the two movable sleeves (23) to slide. Then the movable sleeves (23) will drive the movable plate (20) to slide. At the same time, the movable plate (20) will drive the connecting rod (19) to slide inside the limiting groove (18). Subsequently, the connecting rod (19) will drive the movable rod (16) to slide inside the fertilizer storage box (1) and on the surface of the guide rail (15). Then the movable rod (16) will drive the adjustment plate (17) to slide. The opening degree of the feed pipe (2) can be adjusted. S3. Finally, the operator starts the pneumatic cylinder (11). The operation of the pneumatic cylinder (11) will push the lifting push plate (9) to slide. Then the lifting push plate (9) will drive the connecting plate (8) to slide. Then the connecting plate (8) will drive the adjusting discharge pipe (5) to slide. Then the adjusting discharge pipe (5) will slide on the surface of the discharge pipe (2). At this time, the adjusting discharge pipe (5) will drive the moving shaft (4) to slide. Then the moving shaft (4) will slide inside the moving groove (3) until the adjusting discharge pipe (5) reaches the appropriate depth. At this time, the fertilizer inside the fertilizer storage box (1) will slide off the surface of the auxiliary discharge ramp (7) into the discharge pipe (2). Then the fertilizer inside the discharge pipe (2) will fall into the depth of the soil through the adjusting discharge pipe (5). The depth of fertilization can be adjusted.

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