Multi-layer precise fertilization device for corn and fertilization method thereof

Abstract

The invention relates to the technical field of agricultural planting, in particular to a corn multi-layer precise fertilizing device and a fertilizing method.The device comprises a box body and a controller, a plurality of storage cavities used for storing different raw materials and a plurality of mixing cavities used for preparing different fertilizers are formed in the box body, and the storage cavities are communicated with the mixing cavities adjacent to the storage cavities; stirring assemblies for stirring raw materials are arranged in the mixing cavities; the box body is provided with a digging assembly for digging grooves with different depths and a fertilizing assembly for releasing different fertilizers according to the depths of the grooves; charging assemblies for adding raw materials are arranged at the tops of the storage cavities; the device is complete in structure, and fertilizer can be effectively released while grooves are excavated.

Description

Technical Field

[0001] The present invention relates to the field of agricultural planting technology, and in particular to a multi-layer precision fertilization device for corn and a fertilization method thereof. Background Art

[0002] Corn, a fertilizer-intensive crop, has a vertically layered root system (0-30 cm). Its nutrient requirements for nitrogen, phosphorus, and potassium vary significantly at different growth stages. Traditional fertilization methods, often broadcasting or applying fertilizer in furrows, result in fertilizer utilization rates of less than 35%, and are prone to surface volatilization and deep-seated seepage pollution.

[0003] In the prior art, the soil is often excavated by an excavating device (such as a furrow opener or a hoe), and then the corresponding fertilizer is sprayed by a fertilizing device (such as a backpack fertilizer pump) to complete the fertilization of corn. Although this method can complete the fertilization effect, it cannot automatically select and release the fertilizer while digging the trench, resulting in low operation efficiency.

[0004] In summary, how to solve the problem that the existing fertilization device cannot automatically select and release fertilizer while digging the trench, resulting in low operating efficiency, has become a difficult problem that needs to be solved in the current field. Therefore, it is necessary to propose a more reasonable corn multi-layer precision fertilization device and fertilization method. Summary of the Invention

[0005] To solve the above problems, the present invention provides a multi-layer precision fertilization device for corn and a fertilization method thereof. Through the design of the excavation component and the fertilization component, it can effectively select and release fertilizers automatically while digging trenches, thereby greatly improving work efficiency.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a multi-layer precision fertilization device for corn, comprising a box body and a controller, wherein the box body is provided with several storage chambers for storing different raw materials and mixing chambers for preparing different fertilizers, and the storage chambers are all connected to the mixing chambers adjacent thereto; a stirring assembly for stirring the raw materials is provided in the mixing chamber; a digging assembly for digging grooves of different depths and a fertilizing assembly for releasing different fertilizers according to the depth of the groove are provided on the box body; a feeding assembly for adding raw materials is provided on the top of the storage chamber.

[0007] The excavation assembly includes a driving bin fixedly connected to the bottom of the box body, a rotating shaft is provided for rotation in the driving bin, a plurality of arc-shaped teeth are coaxially fixedly connected to the rotating shaft, and a pushing head for pushing earth is fixedly connected to the bottom of the arc-shaped teeth; a plurality of rotating openings for the pushing head to rotate are provided on the side wall of the driving bin; a first driving member is fixedly connected to the inner side wall of the driving bin, a connecting rod is coaxially fixedly connected to the output shaft of the first driving member, an articulated rod is hinged at one end of the connecting rod away from the first driving member, and the articulated rod is hinged to the side wall of the arc-shaped teeth at one end away from the connecting rod; a controller is used to control the operation of the first driving member, thereby driving the connecting rod to rotate.

[0008] A purge assembly for sweeping soil is also provided in the driving chamber; a moving assembly for driving the entire device to move is provided at the bottom of the box.

[0009] The technical principles of the above solution are as follows:

[0010] Add raw materials into the storage chamber and input them into the mixing chamber; start the first driving member through the controller, the output shaft of the first driving member drives the connecting rod to rotate, and then drives the hinged rod to move, and the hinged rod will pull the arc-shaped teeth and the rotating shaft to rotate, and then drive all the arc-shaped teeth and the push head to rotate, thereby adjusting the angle of the push head. The greater the downward tilt angle of the push head, the larger the trench excavated.

[0011] After the pusher head angle is adjusted, the device is moved forward by moving the assembly. The pusher head will push the soil forward, causing the soil to accumulate on both sides of the pusher head, and several grooves will be formed in the direction of the pusher head movement; while digging, the stirring assembly will stir and mix the raw materials in the mixing chamber; the fertilizing assembly will release different fertilizers according to the rotation angle of the pusher head, thereby releasing corresponding fertilizers in grooves of different depths.

[0012] The above scheme has the following beneficial effects:

[0013] 1. In the existing fertilization technology, surface fertilization or single-layer furrow fertilization is often used for fertilization. Such fertilization methods easily lead to low fertilizer utilization rate and easily cause surface volatilization or deep leakage, polluting the environment. Different from the existing technology, the present invention adopts multi-layer fertilization

[0014] 2. In the present invention, the design of the connecting rod and the hinged rod can drive the arc-shaped teeth and the pusher head to rotate, and then through the transmission of the rotating shaft, the angles of all the pusher heads can be adjusted synchronously, thereby adjusting the digging depth of the pusher head, so that the device can dig grooves of different depths, which is convenient for subsequent fertilization at different levels.

[0015] 3. In the prior art, although trenches of different depths can be dug and different types of fertilizers can be sprayed, the operator needs to select the fertilizer to be sprayed based on his or her own experience and the depth of the trench, resulting in low fertilization efficiency. Human factors may also cause fertilization errors during the fertilization operation. The present invention automatically selects and releases fertilizers while digging trenches, eliminating the need for operators to select fertilizer types. This greatly reduces the impact of human factors on fertilization operations, while improving operation efficiency and reducing labor costs.

[0016] Furthermore, the mixing chambers are connected to discharge pipes, and the connection points between the two are connected to control valves, and the discharge pipes extend to the bottom of the drive bin; the fertilization assembly includes a gear rotatably connected to the inner side wall of the drive bin, and the gear is engaged with the arc-shaped teeth adjacent to it; a number of buttons for controlling the operation of different control valves are embedded on the inner side wall of the drive bin; a pressing rod for pressing the button is fixedly connected to the side wall of the gear.

[0017] Beneficial effect: When the arc-shaped teeth rotate driven by the hinged rod, the arc-shaped teeth will drive the gear to rotate, and then drive the pressing rod to rotate. The greater the rotation angle of the arc-shaped teeth, the greater the rotation angle of the push head and the digging depth, and the greater the rotation angle of the pressing rod; at different rotation angles, the pressing rod will press different buttons, thereby controlling the opening and closing of different control valves, and thus allowing different fertilizers to be discharged into the groove through the discharge pipe.

[0018] Furthermore, the moving component includes a base, and there are rotating rods on both sides of the base that are symmetrically rotated, and rotating teeth are fixedly connected at both ends of the rotating rods; tracks are symmetrically provided on both sides of the base, and the rotating teeth are rotatably cooperated with the adjacent tracks; a driving component is provided on the base for driving the rotating rods to rotate.

[0019] Beneficial effect: The driving assembly controls the rotation of the rotating rod, thereby driving the rotating teeth to rotate, and the rotating teeth can drive the crawler to rotate, thereby driving the entire device to move.

[0020] Furthermore, the drive assembly includes a second drive member fixedly connected to the side of the base close to the drive compartment, and a first bevel gear is coaxially fixedly connected to the output shaft of the second drive member; a plurality of second bevel gears are fixedly connected to the rotating rod; the first bevel gear is meshed with the second bevel gear adjacent to it; and the controller is used to control the operation of the second drive member, thereby controlling the rotation of the first bevel gear.

[0021] Beneficial effect: By starting the second driving member through the controller, the output shaft of the second driving member will drive the first bevel gear to rotate, and the first bevel gear will drive the second bevel gear and the rotating rod to rotate, thereby driving the rotating teeth and the crawler track to rotate.

[0022] Furthermore, the stirring assembly includes a stirring shaft that rotates in the mixing chamber, and a number of stirring rods are fixedly connected to the stirring shaft; the bottom of the stirring shaft passes through the bottom wall of the mixing chamber and is fixedly connected to a third bevel gear; the third bevel gears are all meshed with the second bevel gears adjacent to them.

[0023] Beneficial effect: When the second bevel gear rotates, the third bevel gear also rotates, thereby driving the stirring shaft and the stirring rod to rotate, thereby stirring and mixing the raw materials to prepare corresponding fertilizers.

[0024] Furthermore, the feeding assembly includes a feeding tube connected to the storage chamber, and a feeding cover is detachably connected to the top of the feeding tube.

[0025] Beneficial effect: open the feeding cover, and feed the raw materials into the storage cavity through the feeding tube. After the feeding is complete, engage the feeding cover with the feeding tube to cover the storage cavity and prevent impurities from entering.

[0026] Furthermore, the purge assembly includes a plurality of fan blades, and the fan blades are all fixedly connected to the output shaft of the first driving member.

[0027] Beneficial effect: When the first driving member is started, the output shaft of the first driving member will drive the fan blades to rotate, thereby generating airflow to blow the soil around the pusher head, reducing soil backflow, and also reducing the risk of soil entering the driving chamber and affecting the normal operation of the device.

[0028] Furthermore, the bottom wall of the storage cavity is inclined.

[0029] Beneficial effect: The inclined bottom wall of the storage chamber can better guide the raw materials into the mixing chamber, making it easier to stir and mix the raw materials later.

[0030] Furthermore, a sealing sleeve is fixedly connected to the rotational engagement portion of the mixing chamber and the stirring shaft.

[0031] Beneficial effect: The sealing sleeve can improve the sealing performance of the mixing chamber and prevent leakage of raw materials.

[0032] Furthermore, a multi-layer precision fertilization method for corn comprises the following steps:

[0033] S1, Fertilizer preparation: Open the feeding cover, add different raw materials into the storage chamber through the feeding pipe, and transport them to the mixing chamber; start the second drive member, use the crawler to move the entire device to the target area, and use the stirring shaft and stirring rod to stir the various raw materials to prepare fertilizer.

[0034] S2, trench excavation: After the fertilizer is prepared, the trench excavation depth is set; the first drive member is started, the pusher head angle is adjusted according to the excavation depth, and the pusher head is inserted into the soil; the second drive member is kept running, and the crawler tracks are used to drive the pusher head to move and excavate the trench.

[0035] S3, fertilizer release: set the designated fertilizer according to the excavation depth; while digging the trench, use the first driving member to drive the pressing rod to rotate, press the button, open the designated control valve, and release the designated fertilizer into the trench.

[0036] Beneficial effects: This method can carry out fertilization operations while digging trenches, improving work efficiency; at the same time, the type of fertilizer can be automatically adjusted according to the depth of the trench, further improving work efficiency and accuracy.

[0037] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is an axonometric view of the multi-layer precision fertilization device for corn according to the present invention.

[0039] Figure 2 This is a side view of the multi-layer precision fertilization device for corn according to the present invention.

[0040] Figure 3 It is a side sectional view of the multi-layer precision fertilization device for corn according to the present invention.

[0041] Figure 4 This is an axonometric view of the excavation component in the multi-layer precision fertilization device for corn of the present invention.

[0042] Figure 5 This is an axonometric view of the base of the multi-layer precision fertilization device for corn of the present invention.

[0043] Figure 6 Schematic diagram of the steps of the multi-layer precision fertilization method for corn of the present invention.

[0044] The figure marks in the drawings of the specification include: 1. box body; 2. storage chamber; 3. mixing chamber; 4. drive chamber; 5. rotating shaft; 6. arc-shaped teeth; 7. pushing head; 8. first motor; 9. connecting rod; 10. hinged rod; 11. discharge pipe; 12. control valve; 13. gear; 14. button; 15. pressing rod; 16. rotating rod; 17. rotating teeth; 18. crawler; 19. second motor; 20. first bevel gear; 21. second bevel gear; 22. stirring shaft; 23. stirring rod; 24. third bevel gear; 25. feeding pipe; 26. feeding cover; 27. fan blade; 28. sealing sleeve; 29. base. DETAILED DESCRIPTION

[0045] The following is further described in detail through specific implementation methods:

[0046] Example 1:

[0047] As attached Figure 1-Figure 5 As shown: A multi-layer precision fertilization device for corn, including a box body 1 and a controller. The box body 1 is provided with several storage chambers 2 for storing different raw materials and mixing chambers 3 for preparing different fertilizers. The storage chambers 2 are all connected to the adjacent mixing chambers 3; a stirring assembly for stirring the raw materials is provided in each mixing chamber 3; a digging assembly for digging grooves of different depths and a fertilizing assembly for releasing different fertilizers according to the depth of the groove are provided on the box body 1; a feeding assembly for adding raw materials is provided on the top of the storage chamber 2.

[0048] like Figure 3 and Figure 4 As shown, the excavation assembly includes a driving bin 4 welded to the bottom of the box body 1, and a rotating shaft 5 is rotatably fitted inside the driving bin 4. A number of arc-shaped teeth 6 are fixedly connected to the rotating shaft 5 with coaxial bolts, and a pushing head 7 for pushing earth is fixedly connected with bolts at the bottom of the arc-shaped teeth 6; a number of rotating openings for the pushing head 7 to rotate are opened on the side wall of the driving bin 4; a first driving member is fixedly connected to the inner side wall of the driving bin 4 with bolts, and a connecting rod 9 is fixedly connected to the output shaft of the first driving member with coaxial bolts, and the connecting rod 9 is hinged to an articulated rod 10 at one end away from the first driving member, and the left end of the articulated rod 10 is hinged to the side wall of the arc-shaped tooth 6; the controller is used to control the operation of the first driving member, thereby driving the connecting rod 9 to rotate.

[0049] A blowing assembly for blowing away the soil is also provided in the driving chamber 4; a moving assembly for driving the entire device to move is provided at the bottom of the box body 1.

[0050] The mixing chambers 3 are connected to a discharge pipe 11, and the connection point between the two is connected to a control valve 12, and the discharge pipe 11 extends to the bottom of the drive chamber 4; the fertilization assembly includes a gear 13 rotatably connected to the inner wall of the drive chamber 4, and the gear 13 is engaged with the arc-shaped teeth 6 adjacent to it; a number of buttons 14 for controlling the operation of different control valves 12 are embedded on the inner wall of the drive chamber 4; a pressing rod 15 for pressing the button 14 is fixedly connected to the side wall of the gear 13 by bolts.

[0051] The moving assembly includes a base 29, and the base 29 has symmetrically rotating rods 16 on both sides, and rotating teeth 17 are bolted to both ends of the rotating rods 16; tracks 18 are symmetrically provided on both sides of the base 29, and the rotating teeth 17 are rotatably cooperated with the adjacent tracks 18; a driving assembly for driving the rotating rods 16 to rotate is provided on the base 29.

[0052] The drive assembly includes a second drive member fixedly connected to the base 29 on the side close to the drive compartment 4 with bolts, and a first bevel gear 20 is coaxially fixedly connected to the output shaft of the second drive member with bolts; a plurality of second bevel gears 21 are fixedly connected to the rotating rod 16 with bolts; the first bevel gear 20 is meshed with the second bevel gear 21 adjacent to it; the controller is used to control the operation of the second drive member, and thereby control the rotation of the first bevel gear 20.

[0053] The stirring assembly includes a stirring shaft 22 that rotates in the mixing chamber 3, and a number of stirring rods 23 are bolted to the stirring shaft 22; the bottom of the stirring shaft 22 passes through the bottom wall of the mixing chamber 3 and is bolted to a third bevel gear 24; the third bevel gears 24 are all engaged with the second bevel gears 21 adjacent to them.

[0054] A sealing sleeve 28 is fixedly bonded to the rotational engagement portion between the mixing chamber 3 and the stirring shaft 22 . The sealing sleeve 28 can improve the sealing performance of the mixing chamber 3 and prevent leakage of raw materials.

[0055] The feeding assembly includes a feeding tube 25 communicating with the storage chamber 2 , and a feeding cap 26 is detachably engaged with the top of the feeding tube 25 .

[0056] The purge assembly includes a plurality of fan blades 27, and the fan blades 27 are all fixedly connected to the output shaft of the first driving member by bolts.

[0057] In this embodiment, the first driving member and the second driving member are both reduction motors, and are named as the first motor 8 and the second motor 19 respectively.

[0058] The specific implementation process is as follows:

[0059] In the initial state, the pusher head 7 is in a horizontal state to prevent the pusher head 7 from being worn.

[0060] When fertilizing, first, open the feeding cover 26, input the raw materials into the storage chamber 2 through the feeding pipe 25, and transport them to the mixing chamber 3; after the transportation is complete, engage the feeding cover 26 with the feeding pipe 25 to cover the storage chamber 2 to prevent impurities from entering.

[0061] by Figure 2 For example ( Figure 2 is the maximum rotation angle of the push head 7, and the excavated trench is the deepest at this time). At this time, the first motor 8 is started by the controller, and the output shaft of the first motor 8 drives the connecting rod 9 to rotate counterclockwise, thereby driving the hinged rod 10 to move. The hinged rod 10 will drive the arc-shaped teeth 6 and the rotating shaft 5 to rotate counterclockwise, thereby driving all the arc-shaped teeth 6 and the push head 7 to rotate counterclockwise, thereby adjusting the angle of the push head 7. The greater the counterclockwise rotation angle of the push head 7, the larger the trench excavated.

[0062] After the angle adjustment is completed, the second motor 19 is started by the controller. The output shaft of the second motor 19 drives the first bevel gear 20 to rotate. The first bevel gear 20 drives the second bevel gear 21 and the rotating rod 16 to rotate, thereby driving the rotating teeth 17 and the crawler 18 to rotate. At the same time, the second bevel gear 21 drives the third bevel gear 24 to rotate, and then drives the stirring shaft 22 and the stirring rod 23 to rotate, thereby stirring and mixing the raw materials to prepare the corresponding fertilizer.

[0063] During the rotation of the arc-shaped teeth 6, the arc-shaped teeth 6 will drive the gear 13 to rotate, and then drive the pressing rod 15 to rotate. The greater the rotation angle of the arc-shaped teeth 6, the greater the rotation angle of the pressing rod 15. At different rotation angles, the pressing rod 15 will press different buttons 14, triggering different buttons 14, thereby controlling different control valves 12 to open and close, thereby allowing different fertilizers to be discharged into the groove through the discharge pipe 11.

[0064] When the first motor 8 is started, the output shaft of the first motor 8 drives the fan blades 27 to rotate, thereby generating airflow to sweep the soil around the pusher head 7, reducing soil backflow, and also reducing the risk of soil entering the drive chamber 4 and affecting the normal operation of the device.

[0065] Example 2:

[0066] As attached Figure 3 As shown, different from the above embodiment, the bottom wall of the storage cavity 2 is inclined.

[0067] The specific implementation process is as follows: the raw materials will flow from the inclined bottom wall of the storage chamber 2 to the mixing chamber 3, which is convenient for subsequent stirring and mixing of the raw materials.

[0068] Example 3:

[0069] As attached Figure 6 As shown, different from the above embodiment, a multi-layer precision fertilization method for corn includes the following steps:

[0070] S1, fertilizer preparation: open the feeding cover 26, add different raw materials into the storage chamber 2 through the feeding pipe 25, and transport them to the mixing chamber 3; start the second motor 19, use the crawler 18 to move the entire device to the target area, and use the stirring shaft 22 and stirring rod 23 to stir the various raw materials to prepare fertilizer.

[0071] S2, trench excavation: After the fertilizer is prepared, the trench excavation depth is set; the first motor 8 is started, the angle of the pusher head 7 is adjusted according to the excavation depth, and the pusher head 7 is inserted into the soil; the second motor 19 is kept running, and the crawler 18 is used to drive the pusher head 7 to move and excavate the trench.

[0072] S3, fertilizer release: set the designated fertilizer according to the excavation depth; while digging the trench, use the first motor 8 to drive the pressing rod 15 to rotate, press the button 14, open the designated control valve 12, and release the designated fertilizer into the trench.

[0073] This method can carry out fertilization operations while digging trenches, thereby improving operation efficiency; at the same time, the type of fertilizer is automatically adjusted according to the depth of the trench, further improving operation efficiency and improving operation accuracy.

[0074] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A multi-layer precision fertilization device for corn, characterized in that: The invention comprises a box body (1) and a controller. The box body (1) is provided with a plurality of storage chambers (2) for storing different raw materials and a mixing chamber (3) for preparing different fertilizers. The storage chambers (2) are all communicated with the mixing chambers (3) adjacent thereto. A stirring assembly for stirring the raw materials is provided in each mixing chamber (3). The box body (1) is provided with a digging assembly for digging trenches of different depths and a fertilizing assembly for releasing different fertilizers according to the depth of the trenches. A feeding assembly for adding raw materials is provided on the top of each storage chamber (2). The excavation assembly comprises a driving chamber (4) fixedly connected to the bottom of the box body (1); a rotating shaft (5) is rotatably fitted in the driving chamber (4); a plurality of arc-shaped teeth (6) are coaxially fixedly connected to the rotating shaft (5); and a pusher head (7) for pushing earth is fixedly connected to the bottom of each of the arc-shaped teeth (6); a plurality of rotating openings for the pusher head (7) to rotate are opened on the side wall of the driving chamber (4); a first driving member is fixedly connected to the inner side wall of the driving chamber (4); a connecting rod (9) is coaxially fixedly connected to the output shaft of the first driving member; an end of the connecting rod (9) away from the first driving member is hinged to a hinged rod (10); and an end of the hinged rod (10) away from the connecting rod (9) is hinged to the side wall of the arc-shaped teeth (6); a controller is used to control the operation of the first driving member, thereby driving the connecting rod (9) to rotate; A blowing assembly for blowing away soil is also provided in the driving chamber (4); and a moving assembly for driving the entire device to move is provided at the bottom of the box body (1).

2. The multi-layer precision fertilization device for corn according to claim 1, characterized in that: The mixing chambers (3) are both connected to a discharge pipe (11), and the connection point between the two is both connected to a control valve (12), and the discharge pipe (11) extends to the bottom of the driving chamber (4); the fertilizing assembly includes a gear (13) rotatably connected to the inner wall of the driving chamber (4), and the gear (13) is meshed with the arc-shaped teeth (6) adjacent thereto; a plurality of buttons (14) for controlling the operation of different control valves (12) are embedded and installed on the inner wall of the driving chamber (4); and a pressing rod (15) for pressing the button (14) is fixedly connected to the side wall of the gear (13).

3. The multi-layer precision fertilization device for corn according to claim 2, characterized in that: The mobile assembly includes a base (29), and rotating rods (16) are symmetrically rotated on both sides of the base (29), and rotating teeth (17) are fixedly connected at both ends of the rotating rod (16); crawlers (18) are symmetrically provided on both sides of the base (29), and the rotating teeth (17) are rotated with the crawlers (18) adjacent thereto; and a driving assembly for driving the rotating rod (16) to rotate is provided on the base (29).

4. The multi-layer precision fertilization device for corn according to claim 3, characterized in that: The driving assembly comprises a second driving member fixedly connected to a side of a base (29) close to a driving chamber (4); a first bevel gear (20) is coaxially fixedly connected to an output shaft of the second driving member; a plurality of second bevel gears (21) are fixedly connected to a rotating rod (16); the first bevel gear (20) is meshed with the second bevel gears (21) adjacent thereto; and a controller is used to control the operation of the second driving member, thereby controlling the rotation of the first bevel gear (20).

5. The multi-layer precision fertilization device for corn according to claim 4, characterized in that: The stirring assembly comprises a stirring shaft (22) that rotates in the mixing chamber (3), and a plurality of stirring rods (23) are fixedly connected to the stirring shaft (22); the bottom of the stirring shaft (22) passes through the bottom wall of the mixing chamber (3) and is fixedly connected to a third bevel gear (24); and the third bevel gears (24) are all meshed with the second bevel gears (21) adjacent thereto.

6. The multi-layer precision fertilization device for corn according to claim 5, characterized in that: The feeding assembly comprises a feeding pipe (25) communicating with the storage chamber (2), and a feeding cover (26) is detachably connected to the top of the feeding pipe (25).

7. The multi-layer precision fertilization device for corn according to claim 6, characterized in that: The purge assembly comprises a plurality of fan blades (27), and the fan blades (27) are all fixedly connected to the output shaft of the first driving member.

8. The multi-layer precision fertilization device for corn according to claim 7, characterized in that: The inner bottom wall of the storage cavity (2) is arranged to be inclined.

9. The multi-layer precision fertilization device for corn according to claim 8, characterized in that: A sealing sleeve (28) is fixedly connected to the rotational engagement portion of the mixing chamber (3) and the stirring shaft (22).

10. A method for multi-layer precision fertilization of corn, based on the multi-layer precision fertilization device for corn according to any one of claims 1 to 9, characterized in that: The following steps are included S1, fertilizer preparation: open the feeding cover (26), add different raw materials into the storage chamber (2) through the feeding pipe (25), and transport them to the mixing chamber (3); start the second driving member, use the crawler (18) to move the entire device to the target area, and use the stirring shaft (22) and the stirring rod (23) to stir the various raw materials to prepare fertilizer; S2, trench excavation: after the fertilizer preparation is completed, the trench excavation depth is set; Start the first driving member, adjust the angle of the pusher head (7) according to the excavation depth, and insert the pusher head (7) into the soil; Keep the second driving member running, and use the crawler (18) to drive the push head (7) to move and dig the trench; S3, fertilizer release: set the designated fertilizer according to the excavation depth; while digging the trench, use the first driving member to drive the pressing rod (15) to rotate, press the button (14), open the designated control valve (12), and release the designated fertilizer into the trench.

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