Adjustable crop fertilizing device

Abstract

The utility model discloses an adjustable crop fertilizing device, which relates to the technical field of fertilizing devices and comprises a push frame, the inner surface of the push frame is fixedly connected with a bearing shaft, two sides of the outer surface of the bearing shaft are rotatably connected with rollers, and the outer surface of the bearing shaft is slidably connected with a fertilizing mechanism; through the arrangement of the graduated tube and the graduation lines, a user can control the fertilizing amount of liquid fertilizer according to the specific requirements of crops, and the situation that the growth and the yield of the crops are affected by too much or too little fertilizer is avoided, so that the growth quality and the yield of the crops are improved. In the fertilizing process, the pulling plate slides to drive the pulling rope and the sliding block to move, then the sliding block is controlled to open and close the through hole, the whole mechanical process is stable and reliable, faults are not prone to occurring, the sliding path of the pulling rope is limited through the limiting rod, the stability and accuracy of the pulling rope in the moving process are guaranteed, and the fertilizing efficiency is improved. And the problem of clamping stagnation of the pull rope is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fertilization device technology, specifically to an adjustable crop fertilization device. Background Technology

[0002] In recent years, liquid fertilizers have become increasingly popular and widely used. Liquid fertilizers are liquid products containing a variety of nutrients for crop growth. They are dissolved in the soil in ionic form and directly absorbed by crops. Liquid fertilizers have the advantages of good fertilizer efficiency and high utilization rate. Moreover, they produce no dust particles or smoke during production and use, resulting in less environmental pollution. They are a type of "green fertilizer".

[0003] In real life, when farmers apply liquid fertilizer to crops, they often use methods such as pouring or flooding. Flooding consumes more fertilizer and is more expensive. While pouring liquid fertilizer consumes less fertilizer compared to flooding, it is prone to uneven application. To solve the above problems, an adjustable crop fertilization device is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: an adjustable crop fertilization device, including a push frame, a receiving shaft fixedly connected to the inner surface of the push frame, rollers rotatably connected to both sides of the outer surface of the receiving shaft, and a fertilization mechanism slidably connected to the outer surface of the receiving shaft; the user can push the entire device forward using the push frame and rollers, and cooperate with the fertilization mechanism to fertilize the crops; the two rollers can move forward along the furrows of the field without damaging the crops.

[0005] The fertilization mechanism includes a fertilizer tube with a sliding sleeve mounted on its upper surface and a flow tube mounted on its outer surface. A fertilization component is fixedly connected to the top of the flow tube, and an adjustment component is mounted on the inner surface of the fertilization component. A feed pipe is installed on the side of the fertilization component near the fertilizer tube, and a feed box is fixedly connected to the top of the feed pipe. The fertilizer tube can fertilize crops in the field. The sliding sleeve can slide along the outer surface of the receiving shaft, adjusting the position of the fertilizer tube on the receiving shaft surface during sliding. The flow tube is a flexible tube, allowing for some stretching without damage. The fertilization component can regulate the liquid fertilizer content inside.

[0006] Furthermore, the inner surface of the sliding sleeve is slidably connected to the outer surface of the receiving shaft, and both sides of the feed box are mounted on the outer surface of the pusher.

[0007] Furthermore, the fertilizer applicator includes a graduated tube with graduated lines on its outer surface. A plugging rod is slidably connected to the inner surface of the graduated tube. A pull plate is installed on one side of the plugging rod, and a spring band is installed on the pull plate near the plugging rod. A pull rope is installed on the inner surface of the plugging rod, and a slider is installed at the bottom end of the pull rope. A limit rod is slidably connected to the outer surface of the pull rope. The end face size of the plugging rod is consistent with the end face size of the bottom of the feed tube. The spring band functions similarly to a spring, both having elasticity and reset functions. The limit rod can limit the sliding path of the pull rope.

[0008] Furthermore, the bottom end of the graduated tube is installed at the top end of the flow tube, the inner surface of the graduated tube is fixedly connected to the outer surface of the flow tube, the end of the spring band away from the pull plate is installed on the side of the graduated tube away from the feed tube, the outer surface of the slider is slidably connected to the inner surface of the flow tube, and the top end of the limiting rod is installed on the top of the inner surface of the graduated tube. A portion of the top opening of the flow tube is embedded inside the graduated tube, and multiple through holes are opened on its surface to facilitate the flow of liquid fertilizer later.

[0009] Furthermore, the control component includes an alarm, a power supply mounted at its bottom, a microcontroller mounted at its bottom, an insertion rod mounted at its bottom, a fixing rod mounted in the inner groove of the insertion rod, a rotating plate mounted on the outer surface of the fixing rod, and a compression spring mounted on the outer surface of the rotating plate. The power supply provides power to the alarm, the microcontroller, and the pressure sensor below via wires, a portion of which is embedded in the inner wall of the insertion rod. In the initial state, the compression spring compresses the rotating plate outwards.

[0010] Furthermore, a pressure sensor is installed in the inner cavity of the insertion rod, a T-shaped rod is provided at the bottom of the pressure sensor, and a buoyancy ball is installed at the bottom of the T-shaped rod.

[0011] Furthermore, the fixing rods are symmetrically arranged on both sides of the insertion rod, and the end of the compression spring away from the rotating plate is installed in the inner groove of the insertion rod. The outer surface of the T-shaped rod is slidably connected to the inner surface of the insertion rod. In the initial state, there is a certain distance between the upper surface of the T-shaped rod and the bottom of the pressure sensor. The T-shaped plate is made of a lighter material and can slide upward along the inner surface of the insertion rod under the upward thrust of the buoyancy ball.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model, through the setting of scale tube and scale line, allows users to control the amount of liquid fertilizer applied according to the specific needs of crops, avoiding the impact of too much or too little fertilizer on their growth and yield, thereby improving the growth quality and yield of crops.

[0014] 2. In the fertilization process, the sliding of the pull plate drives the movement of the pull rope and the slider, thereby controlling the opening and closing of the through hole by the slider. The entire mechanical process is stable and reliable, and is not prone to failure. Moreover, the limiting rod limits the sliding path of the pull rope, ensuring the stability and accuracy of the pull rope during movement and avoiding the problem of the pull rope getting stuck. At the same time, the linkage between the slider, the flow pipe, the pull rope, and the pull plate ensures that the through hole on the surface of the flow pipe is opened only during the liquid fertilizer delivery process, and the through hole on the surface of the flow pipe is closed only when the plugging rod closes and resets, further ensuring the accuracy of fertilization and avoiding the problem of uneven crop growth due to uneven fertilization.

[0015] 3. The flow pipe used in this utility model is a soft pipe, and the sliding sleeve can slide along the receiving shaft. This allows the position of the fertilizer pipe to be flexibly adjusted according to the distance between two crops in the field. In other words, in practical applications, the planting spacing between different crops is different. This design can adapt to the planting layout of various crops, enhancing the versatility and applicability of the device.

[0016] 4. The design of the buoyancy ball and the scale line in this utility model allows the user to control the depth of the buoyancy ball inside the scale tube according to the required scale line position. The design of the buoyancy ball replaces the user's subsequent visual observation, achieving precise control.

[0017] 5. In this utility model, the pressure sensor, microcontroller, and alarm work together to automatically issue an alarm to remind the user to stop fertilizing when the liquid fertilizer reaches the set content, thus avoiding the problem of over-fertilization caused by user negligence or failure to observe in time. Attached Figure Description

[0018] Figure 1 This is the front view of this utility model;

[0019] Figure 2 This is a schematic diagram of the fertilization mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the fertilizer application component of this utility model;

[0021] Figure 4 This is a cross-sectional view of the scale tube of this utility model;

[0022] Figure 5 This is a cross-sectional view of the leak-stopping rod of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the control component of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the T-shaped rod of this utility model;

[0025] Figure 8 This is a cross-sectional view of the insertion rod of this utility model.

[0026] In the diagram: 1. Push frame; 2. Receiving shaft; 3. Roller; 4. Fertilizer application mechanism; 41. Fertilizer application pipe; 42. Sliding sleeve; 43. Flow pipe; 44. Fertilizer application component; 441. Scale tube; 442. Scale line; 443. Leak-stopping rod; 444. Pull plate; 445. Spring belt; 446. Pull rope; 447. Slider; 448. Limiting rod; 45. Control component; 451. Alarm; 452. Power supply; 453. Controller; 454. Insertion rod; 455. Fixing rod; 456. Rotating plate; 457. Compression spring; 458. Pressure sensor; 459. T-shaped rod; 460. Buoyancy ball; 46. Feed pipe; 47. Feed box. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0028] Example 1:

[0029] Please see Figure 1 - Figure 5 This utility model provides a technical solution: an adjustable crop fertilization device, including a push frame 1, a receiving shaft 2 fixedly connected to the inner surface of the push frame 1, rollers 3 rotatably connected to both sides of the outer surface of the receiving shaft 2, and a fertilization mechanism 4 slidably connected to the outer surface of the receiving shaft 2. The user can push the entire device forward using the push frame 1 and the rollers 3, and fertilize the crops in conjunction with the fertilization mechanism 4. The two rollers 3 can move along the furrows of the field without damaging the crops. The fertilization mechanism 4 can fertilize crop seeds or crops during their growth process. There is a certain distance between the bottom of the fertilization mechanism 4 and the top of the crops, so it will not touch or damage the crops during movement. Simultaneously, when the user pushes the push frame 1, both feet are placed in the furrows of the field, and the width of the soil in the field where crops are planted is not excessive, thus preventing the user's legs from spreading too far apart.

[0030] The fertilization mechanism 4 includes a fertilizer tube 41, a sliding sleeve 42 mounted on the upper surface of the fertilizer tube 41, a flow tube 43 mounted on the outer surface of the fertilizer tube 41, a fertilizer application component 44 fixedly connected to the top end of the flow tube 43, an adjustment component 45 mounted on the inner surface of the fertilizer application component 44, and a feed pipe 46 mounted on the side of the fertilizer application component 44 near the fertilizer tube 41, with a feed box 47 fixedly connected to the top end of the feed pipe 46. The fertilizer tube 41 can fertilize crops in the field. The sliding sleeve 42 can slide along the outer surface of the receiving shaft 2, and the position of the fertilizer tube 41 on the surface of the receiving shaft 2 can be adjusted during sliding. The flow tube 43 is a flexible tube, allowing for some stretching without damage. The fertilizer application component 44 can regulate the content of liquid fertilizer inside.

[0031] The inner surface of the sliding sleeve 42 is slidably connected to the outer surface of the receiving shaft 2, and both sides of the feed box 47 are installed on the outer surface of the push frame 1.

[0032] The fertilizer applicator 44 includes a graduated tube 441 with graduated lines 442 on its outer surface. A plugging rod 443 is slidably connected to the inner surface of the graduated tube 441. A pull plate 444 is installed on one side of the plugging rod 443, and a spring band 445 is installed on the side of the pull plate 444 near the plugging rod 443. A pull rope 446 is installed on the inner surface of the plugging rod 443, and a slider 447 is installed at the bottom end of the pull rope 446. A limit rod 448 is slidably connected to the outer surface of the pull rope 446. The end face size of the plugging rod 443 is consistent with the end face size of the bottom of the feed tube 46. The spring band 445 has the same function as a spring, both having elasticity and reset functions. The limit rod 448 can limit the sliding path of the pull rope 446.

[0033] The bottom end of the graduated tube 441 is installed at the top end of the flow tube 43. The inner surface of the graduated tube 441 is fixedly connected to the outer surface of the flow tube 43. The end of the spring band 445 away from the pull plate 444 is installed on the side of the graduated tube 441 away from the feed tube 46. The outer surface of the slider 447 is slidably connected to the inner surface of the flow tube 43. The top end of the limiting rod 448 is installed on the top of the inner surface of the graduated tube 441. A portion of the top opening of the flow tube 43 is embedded inside the graduated tube 441, and multiple through holes are opened on its surface to facilitate the flow of liquid fertilizer later.

[0034] First, a portion of liquid fertilizer that needs to be applied to crops is poured into the feed box 47. After the liquid fertilizer is thoroughly stirred, it will enter the feed pipe 46. Due to the blocking effect of the plugging rod 443 on the bottom port of the feed pipe 46, the liquid fertilizer inside the feed pipe 46 cannot enter the graduated tube 441.

[0035] When the user needs to fertilize crops in the field with the entire device, they can push the pusher 1 to move the entire device forward. The user can observe the content at the scale line 442 by pulling the pull plate 444 along the inner surface of the scale tube 441 away from the feed tube 46, so that the bottom port surface of the feed tube 46 separates from the contact surface of the plugging rod 443. In this way, the liquid fertilizer inside the feed tube 46 will flow into the interior of the scale tube 441. According to user observation, when the liquid fertilizer flowing into the graduated tube 441 reaches the designated graduation line 442, the user releases the pull plate 444. The pull plate 444 will then reset under the elasticity of the spring band 445, causing the plugging rod 443 to move. The end face of the plugging rod 443 near the feed pipe 46 will then re-contact the bottom port of the feed pipe 46, thus blocking the liquid fertilizer and preventing it from re-entering the graduated tube 441. By setting the graduation line 442, the liquid fertilizer content inside the graduated tube 441 can be precisely controlled according to the user's needs.

[0036] When the liquid fertilizer content inside the graduated tube 441 reaches a certain standard, as the pull plate 444 slides outward along the inner surface of the graduated tube 441, the pull plate 444 also drives the pull rope 446 to move. The bottom of the pull rope 446 will pull the slider 447 upward. During the upward pulling of the slider 447, the through hole on the outer surface of the top port of the flow tube 43 will be exposed. At this point, the liquid fertilizer inside the graduated tube 441 can enter the flow tube 43 and the fertilizer tube 41 through the through hole, and finally fertilize the crops. During this process, the limit bar 448 always limits the sliding path of the pull rope 446. When the pull plate 444 is released, the pull plate 444 is reset under the elasticity of the spring band 445, and the slider 447 at the bottom of the pull rope 446 will continue to slide down along the inner wall of the flow tube 43 under the action of gravity, so that the pull rope 446 is taut again.

[0037] Since the flow pipe 43 is a flexible pipe, when the distance between two crops in the field is far or close, the position of the sliding sleeve 42 can be adjusted. That is, the sliding sleeve 42 can be slid a certain distance along the outer surface of the receiving shaft 2 so that the bottom port of the fertilizer pipe 41 is basically above the crop below, which makes it easier for subsequent fertilizer to be accurately applied to the crops in the field.

[0038] The fertilizer pipe 41 is a certain distance from the top of the crops below, so it will not touch the crops or cause damage to them during movement.

[0039] Example 2:

[0040] Please see Figure 1 - Figure 8 This utility model provides a technical solution: Based on Embodiment 1, the control component 45 includes an alarm 451, a power supply 452 installed at the bottom of the alarm 451, a microcontroller 453 installed at the bottom of the power supply 452, an insertion rod 454 installed at the bottom of the microcontroller 453, a fixing rod 455 installed in the inner groove of the insertion rod 454, a rotating plate 456 installed on the outer surface of the fixing rod 455, and a compression spring 457 installed on the outer surface of the rotating plate 456. The power supply 452 supplies power to the alarm 451, the microcontroller 453, and the pressure sensor 458 below via wires, a portion of which is installed in the inner wall of the insertion rod 454. In the initial state, the compression spring 457 pushes the rotating plate 456 outward.

[0041] A pressure sensor 458 is installed in the inner cavity of the insertion rod 454. A T-shaped rod 459 is provided at the bottom of the pressure sensor 458, and a buoyancy ball 460 is installed at the bottom of the T-shaped rod 459.

[0042] Fixed rods 455 are symmetrically arranged on both sides of the insertion rod 454. The end of the compression spring 457 away from the rotating plate 456 is installed in the inner groove of the insertion rod 454. The outer surface of the T-shaped rod 459 is slidably connected to the inner surface of the insertion rod 454. In the initial state, there is a certain distance between the upper surface of the T-shaped rod 459 and the bottom of the pressure sensor 458. The T-shaped plate is made of a lighter material and can slide upward along the inner surface of the insertion rod 454 under the upward thrust of the buoyancy ball 460.

[0043] When in use, once the user has determined the amount of liquid fertilizer to be added to the graduated tube 441 each time, they can press the rotating plates 456 on both sides of the insertion rod 454 with one hand. This causes the rotating plates 456 to rotate around the outer surface of the fixed rod 455 and towards the side closer to the compression spring 457, compressing the compression spring 457. When the rotating plates 456 enter the inner groove of the insertion rod 454, they will not adhere to the inner surface of the graduated tube 441. The user can control the bottom of the insertion rod 454, i.e., the buoyancy ball 460, in the graduated tube 441. The depth of the inner part of 41 allows the bottom of the buoyancy ball 460 to reach the position of the required scale line 442. After controlling the position of the buoyancy ball 460 inside the scale tube 441, the user releases the rotating plates 456 on both sides. The rotating plates 456 on both sides are reset under the elasticity of the compression spring 457, and further cause the rotating plates 456 to fit tightly against the inner surface of the scale tube 441. At this time, the entire insertion rod 454 can be fixed by the cooperation of the rotating plate 456 and the compression spring 457. At this time, the position of the bottom buoyancy ball 460 is also restricted.

[0044] After the user adjusts the liquid fertilizer content inside the graduated tube 441 for the first time, the position of the buoyancy ball 460 can be determined. When liquid fertilizer is subsequently added to the graduated tube 441, as the liquid fertilizer content inside the graduated tube 441 gradually increases and touches the buoyancy ball 460, the buoyancy ball 460 will cause the T-shaped rod 459 to slide upward along the inner surface of the insertion rod 454 under the influence of buoyancy until the upper surface of the T-shaped rod 459 contacts the bottom of the pressure sensor 458. After sensing the pressure, the pressure sensor 458 will transmit a signal to the microcontroller 453, which will then control the alarm 451 to sound. When the user hears the sound, they can stop pulling the pull plate 444 to prevent the liquid fertilizer inside the feed tube 46 from continuing to flow into the graduated tube 441. This can replace the user in controlling the liquid fertilizer content inside the graduated tube 441, avoiding the problem that the user needs to observe the liquid fertilizer content inside the graduated tube 441 every time to control the liquid fertilizer content.

[0045] Working principle:

[0046] First, by setting the scale tube 441 and scale line 442, users can control the amount of liquid fertilizer applied according to the specific needs of crops, avoiding the impact of too much or too little fertilizer on their growth and yield, thereby improving the growth quality and yield of crops.

[0047] During fertilization, the sliding of the pull plate 444 drives the movement of the pull rope 446 and the slider 447, thereby controlling the opening and closing of the through hole by the slider 447. The entire mechanical process is stable and reliable, and is not prone to failure. Moreover, the limit bar 448 limits the sliding path of the pull rope 446, ensuring the stability and accuracy of the pull rope 446 during movement and avoiding the problem of the pull rope 446 getting stuck. At the same time, the linkage between the slider 447, the flow tube 43, the pull rope 446, and the pull plate 444 ensures that the through hole on the surface of the flow tube 43 is opened only during the liquid fertilizer delivery process, and the through hole on the surface of the flow tube 43 is closed only when the plugging bar 443 is closed and reset, further ensuring the accuracy of fertilization and avoiding the problem of uneven crop growth due to uneven fertilization.

[0048] Because the flow pipe 43 is made of soft pipe and the sliding sleeve 42 can slide along the receiving shaft 2, the position of the fertilizer pipe 41 can be flexibly adjusted according to the distance between two crops in the field. In other words, in actual application, the planting spacing between different crops is different. This design can adapt to the planting layout of various crops, enhancing the versatility and applicability of the device.

[0049] The design of the buoyancy ball 460 in conjunction with the scale line 442 allows the user to control the depth of the buoyancy ball 460 inside the scale tube 441 according to the required position of the scale line 442. The design of the buoyancy ball 460 replaces the user's subsequent visual observation, achieving precise control.

[0050] The pressure sensor 458, together with the microcontroller 453 and the alarm 451, can automatically issue an alarm to remind the user to stop fertilizing when the liquid fertilizer reaches the set content, thus avoiding the problem of over-fertilization caused by user negligence or failure to observe in time.

[0051] The design of the rotating plates 456 on both sides of the insertion rod 454 and the compression spring 457 makes the position adjustment of the buoyancy ball 460 simple. The user can adjust the depth of the buoyancy ball 460 inside the scale tube 441 by pressing the rotating plate 456 with one hand, which reduces the difficulty of operation. After the rotating plate 456 is tightly attached to the inner surface of the scale tube 441, it can effectively fix the position of the insertion rod 454 and the buoyancy ball 460, ensuring that the buoyancy ball 460 will not move randomly due to external force or the flow of liquid fertilizer during fertilization, thereby maintaining the stability of the set fertilization amount.

[0052] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An adjustable crop fertilization device, comprising a pusher frame (1), characterized in that: The inner surface of the pusher (1) is fixedly connected to a receiving shaft (2), and both sides of the outer surface of the receiving shaft (2) are rotatably connected to rollers (3). The outer surface of the receiving shaft (2) is slidably connected to a fertilizer application mechanism (4). The fertilization mechanism (4) includes a fertilization pipe (41), a sliding sleeve (42) is installed on the upper surface of the fertilization pipe (41), a flow pipe (43) is installed on the outer surface of the fertilization pipe (41), a fertilization component (44) is fixedly connected to the top end of the flow pipe (43), an adjustment component (45) is also installed on the inner surface of the fertilization component (44), a feed pipe (46) is installed on the side of the fertilization component (44) near the fertilization pipe (41), and a feed box (47) is fixedly connected to the top end of the feed pipe (46).

2. The adjustable crop fertilization device according to claim 1, characterized in that: The inner surface of the sliding sleeve (42) is slidably connected to the outer surface of the receiving shaft (2), and both sides of the feed box (47) are installed on the outer surface of the pusher (1).

3. The adjustable crop fertilization device according to claim 1, characterized in that: The fertilizer applicator (44) includes a graduated tube (441), the outer surface of which is provided with graduated lines (442), a plugging rod (443) is slidably connected to the inner surface of the graduated tube (441), a pull plate (444) is installed on one side of the plugging rod (443), a spring band (445) is installed on the side of the pull plate (444) near the plugging rod (443), a pull rope (446) is installed on the inner surface of the plugging rod (443), a slider (447) is installed at the bottom end of the pull rope (446), and a limit rod (448) is slidably connected to the outer surface of the pull rope (446).

4. An adjustable crop fertilization device according to claim 3, characterized in that: The bottom end of the scale tube (441) is installed at the top end of the flow tube (43). The inner surface of the scale tube (441) is fixedly connected to the outer surface of the flow tube (43). The end of the spring band (445) away from the pull plate (444) is installed on the side of the scale tube (441) away from the feed tube (46). The outer surface of the slider (447) is slidably connected to the inner surface of the flow tube (43). The top end of the limiting rod (448) is installed on the top of the inner surface of the scale tube (441).

5. An adjustable crop fertilization device according to claim 1, characterized in that: The control component (45) includes an alarm (451), a power supply (452) is installed at the bottom of the alarm (451), a microcontroller (453) is installed at the bottom of the power supply (452), an insertion rod (454) is installed at the bottom of the microcontroller (453), a fixing rod (455) is installed in the inner groove of the insertion rod (454), a rotating plate (456) is installed on the outer surface of the fixing rod (455), and a compression spring (457) is installed on the outer surface of the rotating plate (456).

6. An adjustable crop fertilization device according to claim 5, characterized in that: A pressure sensor (458) is installed in the inner cavity of the insertion rod (454), and a T-shaped rod (459) is provided at the bottom of the pressure sensor (458), and a buoyancy ball (460) is installed at the bottom of the T-shaped rod (459).

7. An adjustable crop fertilization device according to claim 6, characterized in that: The fixing rod (455) is symmetrically arranged on both sides of the insertion rod (454), the end of the compression spring (457) away from the rotating plate (456) is installed in the inner groove of the insertion rod (454), and the outer surface of the T-shaped rod (459) is slidably connected to the inner surface of the insertion rod (454).

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