Corn tillering inhibition and targeted deep fertilizer application device

Abstract

This invention relates to the field of corn planting technology, specifically a corn tillering suppression and directional deep fertilizer application device. It includes a drive frame with a walking structure, and a double-layer operating plate is located at the center of the side of the drive frame. A cylinder is connected between the two operating plates. A guide frame is rotatably mounted at the center of the bottom operating plate. Several sets of auxiliary rotating gears are rotatably installed at equal intervals on the outer wall of the guide frame, located on the top of the operating platform. These auxiliary rotating gears mesh with the guide frame. This invention effectively solves the problems of excessive tillering affecting the growth of the main stem and low fertilizer utilization due to improper fertilizer application in traditional corn planting processes by integrating tillering suppression and deep fertilizer application. This device can not only accurately suppress tillering during the critical growth period of corn, but also directionally and deeply apply fertilizer to the corn root system, promoting full absorption and utilization of fertilizer by the roots, reducing fertilizer volatilization and loss, and providing a strong guarantee for high and stable corn yields.

Description

Technical Field

[0001] This invention relates to the field of corn planting technology, specifically a device for inhibiting corn tillering and for targeted deep application of fertilizer. Background Technology

[0002] Corn is an important food and feed crop in my country. Its yield largely depends on the synergistic optimization of individual plant productivity and population structure. In the early stages of corn growth, ineffective tillers compete with the main stem for resources such as light, water, and nutrients, inhibiting the vigorous growth of the main stem and thus affecting ear development, resulting in the failure to fully realize yield potential. At the same time, the efficient use of fertilizers is a key link in achieving green agricultural development. Traditional surface or shallow application methods easily lead to a large amount of fertilizer volatilization and loss, while precise deep application of fertilizers to the root-dense area can significantly improve utilization and reduce non-point source pollution.

[0003] However, there are still many technical challenges in field management during the critical growth period of maize. On the one hand, tillering suppression and topdressing are usually carried out by different equipment in multiple stages, making it difficult to grasp the optimal timing for the implementation of these two agronomic measures. On the other hand, conventional equipment has significant shortcomings in terms of operational precision and adaptability: tillering suppression mechanisms are difficult to adapt to maize stalks of different plant types and growth stages, and are prone to missing treatments; fertilization mechanisms are prone to clogging or soil adhesion in complex field environments, affecting the accuracy of fertilization and the reliability of the equipment.

[0004] To address the aforementioned technical bottlenecks and with the goal of achieving multi-functional and collaborative management in precision agriculture, an improved scheme is proposed that integrates tiller suppression and deep fertilizer application, and introduces an adaptive control mechanism. This aims to simultaneously optimize the maize population structure and fertilizer efficiency, avoiding overall yield loss and resource waste caused by poor performance of individual operations. To address the technical deficiencies in this area, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to effectively solve the problems of excessive tillering affecting the growth of the main stem and low utilization rate due to unreasonable fertilizer application in traditional corn planting by integrating tiller suppression with deep fertilization. This device can not only accurately suppress tillering during the critical growth period of corn, but also apply fertilizer deep into the corn root system, so that the fertilizer can be fully absorbed and utilized by the root system, reducing fertilizer volatilization and loss, and providing a strong guarantee for high and stable corn yield.

[0006] The objective of this invention can be achieved through the following technical solution: a corn tillering inhibition and directional deep fertilizer application device, comprising a drive frame with a walking structure, and a double-layer operating plate is provided at the center of the side of the drive frame. A cylinder is provided between the two sets of operating plates. A guide frame is rotatably provided at the center of the bottom operating plate. Several sets of auxiliary rotating gears are rotatably installed at equal intervals on the outer wall of the guide frame at the top of the operating table. The multiple sets of auxiliary rotating gears form a meshing relationship with the guide frame. A drive motor is provided between the bottom shaft of one set of auxiliary rotating gears and the surface of the operating plate. A tillering inhibition structure and a directional deep fertilizer application structure are respectively provided at the rear end and one side of the bottom surface of the guide frame.

[0007] Furthermore, the tillering suppression structure includes a positioning disk that is movably connected to the bottom surface of the guide circle. A vertical shaft is fixedly installed at the center of the top surface of the positioning disk and extends vertically through the inside of the guide circle. A reset spring ring is sleeved on the outside of the vertical shaft between the guide circle and the positioning disk.

[0008] Furthermore, a sliding frame is fixedly installed on the top surface of the positioning disk, and a second drive motor is installed on the inner wall of the rear end of the sliding frame. A lead screw is fixedly installed on the front output shaft of the second drive motor, and a slider is screwed onto the lead screw. A transverse push rod is fixedly installed on the bottom surface of the slider and below the opening of the sliding frame, and side baffles are fixedly installed on the front end of the transverse push rod near both ends.

[0009] Furthermore, a T-shaped abutment frame is fixedly installed at the center of the front end of the transverse push rod, and a flexible brush roller is rotatably embedded in the front end face of the T-shaped abutment frame, and a variable frequency motor is installed at the bearing end of the flexible brush roller to drive its rotation.

[0010] Furthermore, the tillering suppression structure also includes a vertical cylinder disposed at the rear end of the positioning disk. A drive motor is disposed between the top surface of the vertical cylinder and the guide circular frame. Corrugated grooves are distributed in a circular pattern on the outside of the vertical cylinder. A circular shaft pin disposed at the rear end of the positioning disk is inserted into the corresponding position inside the corrugated groove.

[0011] Furthermore, the fertilizer directional deep application structure includes an outer sleeve that runs through the top of the guide circular frame, and a liquid guide pipe runs vertically through the inside of the outer sleeve. A conical soil-breaking head is threadedly connected to the opening of the liquid guide pipe, and a liquid storage tank is provided on one side of the top of the liquid guide pipe. A one-way valve is provided between the liquid storage tank and the liquid guide pipe, and multiple small liquid outlet holes are evenly distributed at the bottom of the liquid guide pipe.

[0012] Furthermore, a double-shaft collar is fixedly sleeved on the outside of the liquid guide tube and at the top of the outer sleeve, and a concave frame is movably sleeved on the outside of the double-shaft collar. A cylinder is provided between the bottom surface of the concave frame and the guide round frame, and the liquid storage tank is installed on the top surface of the concave frame at the end away from the double-shaft collar.

[0013] Furthermore, the inner wall of the outer sleeve is provided with a second corrugated groove, and the inside of the liquid guide tube is provided with a limiting round shaft adapted to the inside of the second corrugated groove at the top, and the limiting round shaft is slidably connected to the corresponding position inside the second corrugated groove. Several sets of vertical roller brushes are provided at the bottom edge of the outer sleeve, and they are adapted to the outer wall surface of the liquid guide tube.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention integrates a tillering inhibition structure and a fertilizer directional deep application structure by setting up a drive frame with a walking structure and a rotatable guide frame, enabling it to move in a circle around a single corn seedling, thus achieving multi-functionality and precise coordinated operation on a single crop.

[0016] 2. A tillering suppression structure is set up, using a transverse push rod and a flexible brush roller driven by a screw-slider mechanism to achieve mechanical contact suppression of corn tillers. The action is precise and causes minimal damage to the plant. At the same time, a micro-motion mechanism consisting of a vertical cylinder, a corrugated groove, and a round shaft pin is set up. Driven by a third drive motor, the entire positioning plate and the brush roller assembly mounted on it can reciprocate up and down micro-motion, allowing the flexible brush roller to adapt to the actual contour of the corn stalk, improving the uniformity and thoroughness of the suppression effect.

[0017] 3. A directional deep fertilizer application structure is set up. The concave sleeve, liquid guide tube and the conical soil-breaking head at the bottom are adjusted to be inserted into the soil by the second cylinder, so as to achieve precise control of the fertilization depth and angle. The liquid guide tube has multiple liquid outlet holes at the bottom, which can be used to break up the soil with the liquid pressure. A one-way valve is set to prevent backflow. The limiting round shaft at the top of the liquid guide tube cooperates with the second corrugated groove on the inner wall of the outer sleeve, so that the liquid guide tube rotates during the lifting and lowering process. At the same time, the vertical roller brush at the bottom of the outer sleeve scrapes the soil off the tube wall, effectively preventing soil from entering the sleeve and causing blockage or wear, thus ensuring the reliability of long-term operation. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of the combination of the guide frame, the tillering inhibition structure, and the fertilizer directional deep application structure of the present invention;

[0021] Figure 3 This is a bottom schematic diagram of the combination of the guide frame, tillering inhibition structure, and fertilizer directional deep application structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the tillering inhibition structure of the present invention;

[0023] Figure 5 This is a side view showing the combination of the guide frame structure and the tillering inhibition structure of the present invention.

[0024] Figure 6 This is a half-sectional schematic diagram of the present invention combined with the operation panel and the guide frame;

[0025] Figure 7 This is a partial cross-sectional view of the fertilizer directional deep application structure of the present invention;

[0026] Figure 8 This is a three-dimensional schematic diagram of a partial structure of the fertilizer directional deep application structure of the present invention.

[0027] In the diagram: 1. Drive frame; 2. Cylinder 1; 3. Guide round frame; 4. Auxiliary rotating gear; 5. Drive motor 1; 6. Tillering suppression structure; 60. Positioning plate; 61. Reset spring ring; 62. Sliding frame; 63. Drive motor 2; 64. Lead screw; 65. Slider; 66. Horizontal push rod; 67. T-shaped abutment frame; 68. Flexible brush roller; 69. Variable frequency motor; 610. Vertical cylinder; 611. Drive motor 3; 612. Round shaft pin; 7. Fertilizer directional deep application structure; 71. Outer sleeve; 72. Liquid guide tube; 73. Liquid storage tank; 74. Double shaft collar; 75. Concave collar; 76. Cylinder 2; 77. Limiting round shaft; 78. Vertical roller brush. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0029] Example 1: Please refer to Figure 1 - Figure 5 As shown, the corn tillering inhibition and directional deep fertilizer application device includes a drive frame 1 with a walking structure, and a double-layer operating plate is set at the center of the side of the drive frame 1. A cylinder 2 is set between the two sets of operating plates. A guide frame 3 is rotatably set at the center of the bottom operating plate. Several sets of auxiliary rotating gears 4 are rotatably installed at equal intervals on the outer wall of the guide frame 3 at the top of the operating table. The multiple sets of auxiliary rotating gears 4 form a meshing relationship with the guide frame 3. A drive motor 5 is set between the bottom shaft of one set of auxiliary rotating gears 4 and the surface of the operating plate. A tillering inhibition structure 6 and a directional deep fertilizer application structure 7 are respectively set at the rear end and one side of the bottom surface of the guide frame 3.

[0030] The tillering suppression structure 6 includes a positioning disk 60 that is movably connected to the bottom surface of the guide frame 3. A vertical shaft is fixedly installed at the center of the top surface of the positioning disk 60 and extends vertically through the inside of the guide frame 3. A return spring ring 61 is sleeved on the outside of the vertical shaft between the guide frame 3 and the positioning disk 60. A sliding frame 62 is fixedly installed on the top surface of the positioning disk 60, and a second drive motor 63 is installed on the inner wall of the rear end of the sliding frame 62. A lead screw 64 is fixedly installed on the output shaft of the second drive motor 63, and a slider 65 is spirally connected to the lead screw 64. A transverse push rod 66 is fixedly installed on the bottom surface of the slider 65 and below the opening of the sliding frame 62. Side baffles are fixedly installed near both ends of the front end of the transverse push rod 66. A T-shaped abutment frame 67 is fixedly installed at the center of the front end of the transverse push rod 66. A flexible brush roller 68 is rotatably embedded in the front end face of the T-shaped abutment frame 67, and a variable frequency motor 69 is installed at the bearing at the end of the flexible brush roller 68 to drive its rotation.

[0031] The specific operation process includes: preparation stage: move the device to the field and drive the walking structure on the drive frame 1 to make it move smoothly in the field. After reaching the predetermined operation position, start the cylinder 2 on the double-layer operation plate, adjust the height of the operation plate according to the actual field conditions, and the guide frame 3 is fitted onto the outside of the single corn seedling.

[0032] Operation phase: Start drive motor 5, which drives one set of auxiliary gears 4 to rotate. Since multiple sets of auxiliary gears 4 mesh with guide frame 3, the guide frame 3 rotates on the operating panel, causing the tillering inhibition structure 6 and the fertilizer directional deep application structure 7 to rotate around the corn seedling. At the same time, start drive motor 63, which drives lead screw 64 to rotate. The rotation of lead screw 64 causes slider 65 to move within slide frame 62. Slider 65 drives transverse push rod 66 and T-shaped abutment frame 67 to move synchronously, forcing flexible brush roller 68 to contact the corn seedling. Variable frequency motor 69 drives flexible brush roller 68 to rotate, inhibiting tillering of the corn seedling. After the tillering inhibition operation is completed, the fertilizer directional deep application structure 7 is activated as needed to apply fertilizer to the designated position at the root of the corn seedling.

[0033] Final stage: After completing the operation, turn off all drive motors and cylinder 2, remove the device from the field, clean and maintain it for the next use.

[0034] It is worth noting that the tillering suppression structure 6 also includes a vertical cylinder 610 located at the rear end of the positioning disk 60. A drive motor 611 is provided between the top surface of the vertical cylinder 610 and the guide circular frame 3. Corrugated grooves are distributed in a circular pattern on the outside of the vertical cylinder 610. A circular shaft pin 612 located at the rear end of the positioning disk 60 is inserted into the corresponding position inside the corrugated groove.

[0035] When the corn seedlings are debranched by roller brushing, the drive motor 611 is started, which drives the vertical cylinder 610 to rotate. The corrugated groove on the outside of the vertical cylinder 610 interacts with the round shaft pin 612 at the rear end of the positioning plate 60. Since the round shaft pin 612 is inserted into the corresponding position inside the corrugated groove, it will move along the trajectory of the corrugated groove during the rotation of the vertical cylinder 610. This will drive the positioning plate 60 to make reciprocating up and down fine adjustment movements within a certain range. This allows the flexible brush roller 68 to adjust the contact pressure and position more accurately and effectively according to the actual height and growth of the corn seedlings when it contacts the tillering part for suppression treatment. This further improves the tillering suppression effect and ensures that the suppression treatment of the tillering part of the corn seedlings is more uniform and thorough, avoiding the situation where some areas are not treated properly due to fixed height treatment.

[0036] Example 2: Please refer to Figure 6 - Figure 8 As shown, the fertilizer directional deep application structure 7 includes an outer sleeve 71 that penetrates the top of the guide frame 3, and a liquid guide pipe 72 that is vertically installed inside the outer sleeve 71. A conical soil-breaking head is threadedly connected to the opening of the liquid guide pipe 72, and a storage tank 73 is installed on one side of the top of the liquid guide pipe 72. A one-way valve is installed between the storage tank 73 and the liquid guide pipe 72. The one-way valve controls the unidirectional flow of fertilizer solution from the storage tank 73 into the liquid guide pipe 72, preventing fertilizer dissolution. The liquid refluxes, and multiple small outlet holes are evenly distributed at the bottom of the liquid guide tube 72 to ensure that the fertilizer can be evenly and appropriately applied deep into the soil; a double-shaft collar 74 is fixedly sleeved on the outside of the liquid guide tube 72 and at the top of the outer sleeve 71, and a concave frame 75 is movably sleeved on the outside of the double-shaft collar 74. A cylinder 76 is provided between the bottom surface of the concave frame 75 and the guide round frame 3, and the liquid storage tank 73 is installed on the top surface of the concave frame 75 away from the double-shaft collar 74.

[0037] During the fertilization stage: First, start cylinder 2 76. Cylinder 2 76 pushes the concave sleeve 75 and the liquid storage tank 73 installed on it to rise or fall, thereby driving the double-shaft collar 74 and the liquid guide pipe 72 fixedly connected to the double-shaft collar 74 to move up and down inside the outer sleeve 71. This allows for flexible adjustment of the angle and depth of the soil breaking head at the bottom of the liquid guide pipe 72 into the soil according to the actual position of the corn seedling roots and the soil conditions. After adjusting to the appropriate position, open the one-way valve between the liquid storage tank 73 and the liquid guide pipe 72. The fertilizer solution in the liquid storage tank 73 flows into the liquid guide pipe 72 through the one-way valve and then flows out from the evenly distributed outlet holes at the bottom of the liquid guide pipe 72, penetrating into the soil at the specified depth of the corn seedling roots.

[0038] It is worth noting that the inner wall of the outer sleeve 71 is provided with a second corrugated groove, and the inside of the liquid guide tube 72 is provided with a limiting round shaft 77 adapted to the inside of the second corrugated groove at the top. The limiting round shaft 77 is slidably connected to the corresponding position inside the second corrugated groove. Several sets of vertical roller brushes 78 are provided at the bottom edge of the outer sleeve 71, and they are adapted to the outer wall surface of the liquid guide tube 72.

[0039] Therefore, after fertilization, the liquid guide tube 72 is pulled out of the soil. During the upward movement, the limiting shaft 77 slides along the corrugated groove on the inner wall of the outer sleeve 71, forcing the liquid guide tube 72 to rotate at a certain angle while moving up and down. The vertical roller brush 78 at the bottom edge of the outer sleeve 71 will contact the soil surface outside the liquid guide tube 72, brushing off the soil attached to the outer wall of the liquid guide tube 72, preventing soil from entering the inner wall of the outer sleeve 71 and causing blockage or affecting subsequent use. In addition, when the liquid fertilizer is sprayed out under high pressure, it will also flush out the soil attached to the small holes, reducing the blockage of the liquid storage holes.

[0040] After fertilization is completed, close the one-way valve, and then use cylinder 76 to lift the liquid guide tube 72 back to its initial position for the next fertilization operation.

[0041] Working Principle: In use, the device is first moved to the field, driving the walking structure on the drive frame 1 to move smoothly. Upon reaching the designated working position, cylinder 2 on the double-layer operating plate is activated. The height of the operating plate is precisely adjusted according to the actual field conditions, allowing the guide frame 3 to accurately fit over the individual corn seedling. Then, drive motor 5 is activated, driving one set of auxiliary gears 4 to rotate. Because multiple sets of auxiliary gears 4 mesh with the guide frame 3, the guide frame 3 rotates on the operating plate, causing the tillering inhibition structure 6 and the fertilizer directional deep application structure 7 to rotate orderly around the corn seedling.

[0042] In the tillering suppression operation, drive motor 63 is turned on, which drives lead screw 64 to rotate. The rotation of lead screw 64 causes slider 65 to move within slide frame 62. Slider 65 drives transverse push rod 66 and T-shaped abutment frame 67 to move synchronously, so that flexible brush roller 68 contacts corn seedling. Variable frequency motor 69 drives flexible brush roller 68 to rotate, suppressing the tillering of corn seedling. At the same time, drive motor 611 is started, which drives vertical cylinder 610 to rotate. The corrugated groove on the outside of vertical cylinder 610 interacts with the round shaft pin 612 at the rear end of positioning plate 60. During the rotation of vertical cylinder 610, round shaft pin 612 moves along the trajectory of corrugated groove, causing positioning plate 60 to make reciprocating up-and-down fine adjustment movements within a certain range. This allows flexible brush roller 68 to accurately and effectively adjust contact pressure and position according to the actual height and growth of corn seedling, ensuring more uniform and thorough suppression of tillering of corn seedling.

[0043] When fertilization is required, cylinder 76 is activated. Cylinder 76 pushes the concave sleeve 75 and the liquid storage tank 73 mounted on it to rise or fall, thereby causing the double-shaft collar 74 and the liquid guide pipe 72 fixedly connected to the double-shaft collar 74 to move up and down within the outer sleeve 71. The angle and depth of the soil-breaking head at the bottom of the liquid guide pipe 72 are flexibly adjusted according to the actual position of the corn seedling roots and the soil conditions. After adjusting to the appropriate position, the one-way valve between the liquid storage tank 73 and the liquid guide pipe 72 is opened. The fertilizer solution in the liquid storage tank 73 flows into the liquid guide pipe 72 through the one-way valve and then flows out from the evenly distributed outlet holes at the bottom of the liquid guide pipe 72, penetrating deep into the soil at the designated depth of the corn seedling roots.

[0044] After fertilization, close the one-way valve, and then use cylinder 76 to lift the liquid guide tube 72 back to its initial position. During the ascent of the liquid guide tube 72, the limiting shaft 77 slides along the corrugated groove 2 on the inner wall of the outer sleeve 71, forcing the liquid guide tube 72 to rotate at a certain angle while moving up and down. Meanwhile, the vertical roller brush 78 at the bottom edge of the outer sleeve 71 will contact the soil surface outside the liquid guide tube 72, brushing off the soil adhering to the outer wall of the liquid guide tube 72, preventing soil from entering the inner sleeve 71 and causing blockage or affecting subsequent use. In addition, when the liquid fertilizer is sprayed out under high pressure, it will also flush out the soil adhering to the small holes, reducing the possibility of blockage in the liquid storage holes. After all operations are completed, turn off all drive motors and cylinder 2, remove the device from the field, and clean and maintain it for future use.

[0045] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for inhibiting corn tillering and applying fertilizer in a targeted, deep manner, characterized in that: It includes a drive frame (1) with a walking structure, and a double-layer operation plate is set at the center of the side of the drive frame (1). A cylinder (2) is set between the two sets of operation plates. A guide frame (3) is rotatably set at the center of the bottom operation plate. Several sets of auxiliary rotating gears (4) are rotatably installed at equal intervals on the outer wall of the guide frame (3) at the top of the operation table. The multiple sets of auxiliary rotating gears (4) form a meshing relationship with the guide frame (3). A drive motor (5) is set between the bottom shaft of one set of auxiliary rotating gears (4) and the surface of the operation plate. A tillering inhibition structure (6) and a fertilizer directional deep application structure (7) are respectively set at the rear end and one side of the bottom surface of the guide frame (3). The tillering inhibition structure (6) includes a positioning disk (60) that is movably connected to the bottom surface of the guide frame (3). A vertical shaft is fixedly installed at the center of the top surface of the positioning disk (60), and the vertical shaft runs vertically through the inside of the guide frame (3). A reset spring ring (61) is sleeved between the guide frame (3) and the positioning disk (60) on the outside of the vertical shaft. The top surface of the positioning disk (60) is fixedly installed with a sliding frame (62), and a second drive motor (63) is installed on the inner wall of the rear end of the sliding frame (62). The output shaft of the second drive motor (63) is fixedly installed with a lead screw (64), and a slider (65) is spirally sleeved on the lead screw (64). A transverse push rod (66) is fixedly installed on the bottom surface of the slider (65) and below the frame opening of the sliding frame (62). Side baffles are fixedly installed at the front end of the transverse push rod (66) near both ends. A T-shaped abutment frame (67) is fixedly installed at the center of the front end of the transverse push rod (66). A flexible brush roller (68) is rotatably embedded in the front end face of the T-shaped abutment frame (67), and a variable frequency motor (69) is installed at the bearing of the end of the flexible brush roller (68) to drive its rotation.

2. The corn tillering inhibition and targeted deep fertilizer application device according to claim 1, characterized in that, The tillering suppression structure (6) also includes a vertical cylinder (610) disposed at the rear end of the positioning disk (60). A drive motor (611) is disposed between the top surface of the vertical cylinder (610) and the guide circular frame (3). A corrugated groove is disposed in a circular pattern on the outside of the vertical cylinder (610). A circular shaft pin (612) disposed at the rear end of the positioning disk (60) is inserted into the corresponding position inside the corrugated groove.

3. The corn tillering inhibition and targeted deep fertilizer application device according to claim 1, characterized in that, The fertilizer directional deep application structure (7) includes an outer sleeve (71) that runs through the top of the guide frame (3), and a liquid guide pipe (72) that runs vertically through the inside of the outer sleeve (71). A cone-shaped soil breaking head is threaded to the opening of the liquid guide pipe (72), and a liquid storage tank (73) is provided on one side of the top of the liquid guide pipe (72). A one-way valve is provided between the liquid storage tank (73) and the liquid guide pipe (72). Multiple small liquid outlet holes are evenly distributed at the bottom of the liquid guide pipe (72).

4. The corn tillering inhibition and targeted deep fertilizer application device according to claim 3, characterized in that, A double-shaft collar (74) is fixedly sleeved outside the liquid guide tube (72) and at the top of the outer sleeve (71). A concave frame (75) is movably sleeved outside the double-shaft collar (74). A cylinder two (76) is provided between the bottom surface of the concave frame (75) and the guide round frame (3). The liquid storage tank (73) is installed at the end of the top surface of the concave frame (75) away from the double-shaft collar (74).

5. The corn tillering inhibition and targeted deep fertilizer application device according to claim 3, characterized in that, The inner wall of the outer sleeve (71) is provided with a second corrugated groove. The liquid guide tube (72) is provided with a limiting round shaft (77) at the top, which is adapted to the inside of the second corrugated groove. The limiting round shaft (77) is slidably connected to the corresponding position inside the second corrugated groove. Several sets of vertical roller brushes (78) are provided at the bottom edge of the outer sleeve (71), and they are adapted to the outer wall surface of the liquid guide tube (72).

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