A precision seeding machine with layered fertilization and no-tillage

Abstract

The utility model relates to sowing machine technical field especially, it relates to a kind of layered fertilization no-tillage precision seeding machine, to solve the problem of existing ditching mode is not conducive to fertilization, sowing.The utility model includes profiling component and is installed in the ditching component, base fertilizer component, seed fertilizer component, soil covering component and tamping component in profiling component along first direction in sequence;Ditching component includes ditching cutting disc;Base fertilizer component includes deep loosening guide ruler and base fertilizer pipe;Seed fertilizer component includes dovetail shovel, seeding pipe and mouth fertilizer pipe;Soil covering component is used to push soil into cutting groove to cover seed and fertilizer;Tamping component is used to compact soil.The utility model avoids the discontinuity of ditching caused by the bounce of ditching cutting disc by the grooving effect of deep loosening guide ruler and dovetail shovel, and realizes double-depth grooving to facilitate the delivery of base fertilizer and mouth fertilizer;Dovetail shovel further widens cutting groove, which facilitates the delivery of mouth fertilizer and seed, and avoids the contact between them.

Description

Technical Field

[0001] This utility model relates to the field of seeder technology, and in particular to a stratified fertilization no-till precision seeder. Background Technology

[0002] Current no-till planters use disc furrows, which have extremely limited soil loosening depth, typically only 5-7 cm. This leads to poor root development, and the planting rows are only 2-3 cm wide, resulting in low land utilization. Fertilizer is applied about 5 cm to the side of the seed and about 5 cm underground, leading to nutrient deficiency in both the early and later stages. Furthermore, when encountering hard obstacles such as gravel, the furrowing disc bounces up, preventing effective furrowing and affecting subsequent fertilization and sowing. Utility Model Content

[0003] The purpose of this invention is to provide a stratified fertilization no-till precision seeder to solve the problem that existing furrowing methods are not conducive to fertilization and sowing.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] A stratified fertilization no-till precision seeder includes a contouring component and a furrowing component, a base fertilizer component, a seed fertilizer component, a soil covering component, and a compaction component that are sequentially installed on the contouring component along a first direction.

[0006] The trenching assembly includes a trenching cutting disc for forming grooves in the soil.

[0007] The base fertilizer assembly includes a deep loosening guide and a base fertilizer pipe. The deep loosening guide is used to enlarge the cutting groove, and the base fertilizer pipe is used to feed base fertilizer into the enlarged cutting groove.

[0008] The seed and fertilizer assembly includes a dovetail shovel, a seeding tube, and a fertilizer inlet tube. The dovetail shovel is used to widen the groove and the working depth is less than that of the deep loosening guide. The seeding tube is used to feed seeds into the groove widened by the dovetail shovel, and the fertilizer inlet tube is used to feed fertilizer into the groove widened by the dovetail shovel.

[0009] The soil covering component is used to push soil into the cutting groove to cover seeds and fertilizer; the compaction component is used to compact the soil.

[0010] In some alternative embodiments, the contouring assembly includes a traction frame, a wheel, a contouring frame, a first hydraulic cylinder, and a second hydraulic cylinder;

[0011] The wheel is rotatably mounted on the contour frame, the first hydraulic cylinder and the second hydraulic cylinder are mounted on the traction frame, and the extended ends of the first hydraulic cylinder and the second hydraulic cylinder are connected to the contour frame;

[0012] Two first hydraulic cylinders and two second hydraulic cylinders are arranged in a rectangular shape in a horizontal plane. The first hydraulic cylinders and the second hydraulic cylinders are arranged sequentially along a first direction, and the rod-side chamber of the first hydraulic cylinder and the rodless chamber of the second hydraulic cylinder are connected. The rodless chamber of the first hydraulic cylinder and the rod-side chamber of the second hydraulic cylinder are also connected.

[0013] In some optional embodiments, the trenching disc includes a circular slice and a depth-limiting ring, the circular slice and the depth-limiting ring being coaxially connected and the diameter of the circular slice being larger than the diameter of the depth-limiting ring.

[0014] In some optional embodiments, the base fertilizer assembly further includes a shock-absorbing rod, the base fertilizer tube is mounted on the deep tillage guide ruler, and the deep tillage guide ruler is hinged to the contouring assembly;

[0015] One end of the shock absorber is hinged to the contouring assembly, and the other end is hinged to the deep loosening guide ruler, configured to apply a thrust to the deep loosening guide ruler in the opposite direction to the first direction.

[0016] In some optional embodiments, the seed-fertilizer assembly further includes a first elastic connecting plate, one end of which is connected to the contouring assembly, and the other end of which is fitted with the dovetail shovel, the seeding tube, and the fertilizer inlet tube.

[0017] The first elastic connecting plate is used to apply a thrust to the dovetail shovel in the opposite direction to the first direction.

[0018] In some optional embodiments, the seed-fertilizer assembly further includes a parallel four-bar linkage, an auxiliary wheel, and an auxiliary spring;

[0019] The parallel four-bar linkage unit consists of a first link, a second link, a third link, and a fourth link that are hinged end to end in sequence. The first link is vertically arranged and connected to the contouring component. The dovetail shovel, the seeding tube, and the fertilizer inlet tube are installed on the third link.

[0020] The auxiliary wheel is mounted on the third link and rolls along the ground;

[0021] One end of the auxiliary spring is connected to the first link, and the other end is connected to the fourth link, configured to apply a pulling force to the fourth link in the opposite direction to the first direction.

[0022] In some alternative embodiments, the soil covering assembly includes a first soil covering plate and a second soil covering plate;

[0023] The first and second soil covering plates are installed on the seed fertilizer assembly and form a V-shaped groove, the opening direction of which is opposite to the first direction.

[0024] Furthermore, the bottom of the V-shaped groove is open.

[0025] In some alternative embodiments, the compaction assembly includes a compaction frame and a compaction wheel, the compaction wheel being rotatably mounted on the compaction frame and used for rolling the soil.

[0026] Furthermore, the pressing assembly also includes a second elastic connecting plate, which is connected to the conforming assembly, and the pressing frame is hinged to the second elastic connecting plate;

[0027] The second elastic connecting plate is used to apply downward pressure to the press frame.

[0028] Based on the above technical solutions, the technical effects achieved by this utility model are as follows:

[0029] The layered fertilization no-till precision seeder provided by this utility model includes a contouring component and, sequentially installed along a first direction, a furrowing component, a base fertilizer component, a seed fertilizer component, a soil covering component, and a compaction component. The furrowing component includes a furrowing cutting disc for forming grooves in the soil. The base fertilizer component includes a deep loosening guide and a base fertilizer pipe. The deep loosening guide is used to enlarge the groove, and the base fertilizer pipe is used to deliver base fertilizer into the enlarged groove. The seed fertilizer component includes a dovetail shovel, a seeding pipe, and a fertilizer inlet pipe. The dovetail shovel is used to enlarge the width of the groove, and the working depth is less than that of the deep loosening guide. The seeding pipe is used to deliver seeds into the groove enlarged by the dovetail shovel, and the fertilizer inlet pipe is used to deliver fertilizer into the groove enlarged by the dovetail shovel. The soil covering component is used to push soil into the groove to cover the seeds and fertilizer. The compaction component is used to compact the soil.

[0030] This utility model provides a layered fertilization no-till precision seeder. First, a furrowing disc cuts a narrow groove, clearing away residual plant roots and other debris. This allows the subsequent deep tillage guide to deepen and widen the groove, delivering base fertilizer to the bottom. Then, a dovetail shovel further widens the upper part of the enlarged groove, facilitating the delivery of seeds and top dressing. The grooving action of the deep tillage guide and dovetail shovel prevents discontinuous furrowing caused by the furrowing disc bouncing up, and achieves double-depth grooving for efficient delivery of base and top dressing, thus preventing nutrient deficiency later. The dovetail shovel further widens the groove, facilitating the delivery of top dressing and seeds while preventing contact between the two. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1A front view of a stratified fertilization no-till precision seeder provided in an embodiment of this utility model;

[0033] Figure 2 This is a schematic diagram of the trenching and cutting disc structure;

[0034] Figure 3 This is the main view of the base fertilizer component and the seed fertilizer component;

[0035] Figure 4 This is a schematic diagram of the structure of the base fertilizer component and the seed fertilizer component;

[0036] Figure 5 This is a top view of the base fertilizer component and the seed fertilizer component;

[0037] Figure 6 This is another structural diagram of the seed fertilizer component;

[0038] Figure 7 Another 3D view of the seed and fertilizer components;

[0039] Figure 8 This is a schematic diagram of the pressing component.

[0040] Icons: 100, Contouring component; 200, Trenching component; 210, Trenching cutting disc; 211, Circular slice; 212, Depth-limiting ring; 300, Base fertilizer component; 310, Deep loosening guide; 320, Base fertilizer tube; 330, Shock absorber; 400, Seed fertilizer component; 410, Dovetail shovel; 420, Seeding tube; 430, Fertilizer tube; 440, First elastic connecting plate; 450, Parallel four-bar linkage unit; 460, Auxiliary wheel; 470, Auxiliary spring; 451, First connecting rod; 452, Second connecting rod; 453, Third connecting rod; 454, Fourth connecting rod; 500, Soil covering component; 510, First soil covering plate; 520, Second soil covering plate; 600, Compactor component; 610, Compactor frame; 620, Compactor wheel; 630, Second elastic connecting plate. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] Current no-till planters use disc furrows, which have extremely limited soil loosening depth, typically only 5-7 cm. This leads to poor root development, and the planting rows are only 2-3 cm wide, resulting in low land utilization. Fertilizer is applied about 5 cm to the side of the seed and about 5 cm underground, leading to nutrient deficiency in both the early and later stages. Furthermore, when encountering hard obstacles such as gravel, the furrowing disc 210 bounces up, preventing effective furrowing and affecting subsequent fertilization and sowing.

[0045] In view of this, the present invention provides a layered fertilization no-till precision seeder, including a contouring component 100 and, sequentially installed along a first direction, a furrowing component 200, a base fertilizer component 300, a seed fertilizer component 400, a soil covering component 500, and a compaction component 600; the furrowing component 200 includes a furrowing cutting disc 210, which is used to form grooves in the soil; the base fertilizer component 300 includes a deep loosening guide 310 and a base fertilizer tube 320, the deep loosening guide 310 being used to enlarge the grooves. The base fertilizer pipe 320 is used to deliver base fertilizer into the enlarged cutting groove; the seed fertilizer assembly 400 includes a dovetail shovel 410, a seeding pipe 420, and a fertilizer inlet pipe 430. The dovetail shovel 410 is used to enlarge the width of the cutting groove and the working depth is less than that of the deep loosening guide 310; the seeding pipe 420 is used to deliver seeds into the cutting groove enlarged by the dovetail shovel 410, and the fertilizer inlet pipe 430 is used to deliver fertilizer into the cutting groove enlarged by the dovetail shovel 410; the soil covering assembly 500 is used to push soil into the cutting groove to cover the seeds and fertilizer; and the compaction assembly 600 is used to compact the soil.

[0046] The layered fertilization no-till precision seeder provided by this utility model first cuts a narrow groove with a furrowing disc 210, cutting away residual plant roots and other debris along the way. This allows the subsequent deep loosening guide 310 to deepen and widen the groove and deliver base fertilizer to the bottom. Then, the dovetail shovel 410 further widens the upper part of the enlarged groove to facilitate the delivery of seeds and top dressing. The grooving action of the deep loosening guide 310 and the dovetail shovel 410 avoids discontinuous furrowing caused by the furrowing disc 210 bouncing up, and achieves double-depth grooving to facilitate the delivery of base fertilizer and top dressing, thus preventing nutrient deficiency later. The dovetail shovel 410 further widens the groove to facilitate the delivery of top dressing and seeds, preventing contact between the two.

[0047] The following combination Figures 1-8 The structure and shape of the stratified fertilization no-till precision seeder provided in this embodiment are described in detail:

[0048] In this embodiment, the first direction is opposite to the direction of movement of the seeder during operation.

[0049] In an optional embodiment, the contouring component 100 includes a traction frame, wheels, a contouring frame, a first hydraulic cylinder, and a second hydraulic cylinder. The traction is connected to a traction device, which can be a tractor. The wheels are rotatably mounted on the contouring frame and roll along the ground during operation. The first and second hydraulic cylinders are mounted on the traction frame, and their extended ends are connected to the contouring frame. The base fertilizer component 300, seed fertilizer component 400, and compaction component 600 are all mounted on the contouring frame.

[0050] Specifically, the contouring component 100 is equipped with two first hydraulic cylinders and two second hydraulic cylinders, arranged in a rectangular shape in the horizontal plane. The first and second hydraulic cylinders are arranged sequentially along a first direction, with the rod-side chamber of the first cylinder connected to the rodless chamber of the second cylinder, and the rodless chamber of the first cylinder connected to the rod-side chamber of the second cylinder. The two first hydraulic cylinders are connected in parallel, and the two second hydraulic cylinders are also connected in parallel. When the terrain undulates, the extended end of the second hydraulic cylinder retracts, reducing the size of the rodless chamber of the second cylinder. The hydraulic oil in the rodless chamber of the second cylinder enters the rod-side chamber of the first cylinder, causing the first cylinder to retract synchronously. This ensures that the contouring frame remains level, preventing tilting and ensuring the normal operation of working components such as the base fertilizer component 300 and the seed fertilizer component 400.

[0051] In an optional embodiment, the trenching disc 210 includes a circular slice 211 and a depth-limiting ring 212, such as... Figure 2 As shown, the circular slice 211 and the depth-limiting ring 212 are coaxially connected, and the diameter of the circular slice 211 is larger than the diameter of the depth-limiting ring 212. The outer circumference of the circular slice 211 is provided with multiple grooves evenly distributed around its own axis, forming a toothed structure to facilitate cutting through obstacles such as roots and stems; the depth-limiting ring 212 rolls along the ground and uses its own circumferential surface to abut against the ground, thereby limiting the depth to which the circular slice 211 cuts into the soil.

[0052] In an optional embodiment, the base fertilizer assembly 300 further includes a shock-absorbing rod 330, the base fertilizer tube 320 is mounted on the deep loosening guide ruler 310, and the deep loosening guide ruler 310 is hinged to the contouring assembly 100; one end of the shock-absorbing rod 330 is hinged to the contouring assembly 100, and the other end is hinged to the deep loosening guide ruler 310, configured to apply a thrust to the deep loosening guide ruler 310 opposite to the first direction.

[0053] Specifically, such as Figure 3As shown, the hinge point of the damping rod 330 and the contouring assembly 100 does not coincide with the hinge point of the deep loosening guide ruler 310 and the contouring assembly 100. The damping rod 330 is configured as a nitrogen damper to reduce vibration and apply a thrust to the deep loosening guide ruler 310 in the opposite direction to the first direction, ensuring the grooving effect of the deep loosening guide ruler 310. The deep loosening guide ruler 310 is used to deepen and widen the groove cut by the grooving cutting disc 210.

[0054] It should be noted that the trenching assembly 200 also includes a mounting arm, one end of which is hinged to the profile frame, and the other end is rotatably mounted with the trenching cutting disc 210. The mounting arm can be installed in the same way as the deep loosening guide gauge 310, and is also equipped with a shock-absorbing rod 330 or a gas spring to apply a thrust in the opposite direction to the first direction, so as to ensure the trenching effect and avoid damage to the trenching cutting disc 210 from hard collisions with stones or other objects.

[0055] In an optional embodiment, the seed-fertilizer assembly 400 further includes a first elastic connecting plate 440. One end of the first elastic connecting plate 440 is connected to the contouring assembly 100, and the other end is equipped with a dovetail shovel 410, a seeding tube 420, and a fertilizer inlet tube 430. The first elastic connecting plate 440 is used to apply a thrust to the dovetail shovel 410 in the opposite direction to the first direction. Figure 3 As shown, the first elastic connecting plate 440 is arc-shaped with the arc-shaped opening facing the base fertilizer component 300, and can be made of spring steel.

[0056] In this embodiment, the direction perpendicular to the first direction in the horizontal plane is taken as the second direction. The seeding tube 420 and the fertilizer inlet tube 430 are arranged along the second direction to avoid contact between the seeds and the fertilizer. Alternatively, the fertilizer inlet tube 430 can be configured with two outlets and arranged on both sides of the outlet of the seeding tube 420, with the three outlets arranged along the second direction.

[0057] When encountering uneven ground, the dovetail shovel 410 may be positioned too high or too low, resulting in an unsuitable trench height and affecting the effectiveness of seeds and fertilizers. Therefore, the first elastic connecting plate 440 in the seed-fertilizer assembly 400 is replaced with a parallel four-bar linkage unit 450, an auxiliary wheel 460, and an auxiliary spring 470, as follows: Figure 6 , Figure 7 As shown, this is used to enable the seed fertilizer component 400 to adapt to local ground undulations and ensure the cutting position.

[0058] Specifically, the parallel four-bar linkage unit 450 consists of a first link 451, a second link 452, a third link 453, and a fourth link 454, which are hinged end to end in sequence. The first link 451 is vertically arranged and connected to the contouring component 100. The dovetail shovel 410, the seeding tube 420, and the fertilizer inlet tube 430 are installed on the third link 453. The auxiliary wheel 460 is installed on the third link 453 and rolls along the ground. One end of the auxiliary spring 470 is connected to the first link 451, and the other end is connected to the fourth link 454. It is configured to apply a pulling force to the fourth link 454 in the opposite direction to the first direction. During operation, when a local area of ​​the ground rises, the auxiliary wheel 460 rises with the ground, thereby driving the third link 453 to move vertically upwards. The dovetail shovel 410 rises along with the third link 453, preventing the dovetail shovel 410 from cutting too deeply. Similarly, when a local area of ​​the ground sinks, the auxiliary wheel 460 descends with the ground under gravity, and the dovetail shovel 410 also descends along with the auxiliary wheel 460, preventing the dovetail shovel 410 from cutting too shallowly. In other words, the auxiliary wheel 460 adapts to local terrain undulations, and in conjunction with the contour-following component 100, adapts to the overall terrain, enabling better terrain adaptation and ensuring that the working depth of the dovetail shovel 410 remains below a certain distance from the ground, preventing fertilizer and seeds from being cut too deeply or too shallowly. The parallel four-bar linkage unit 450 ensures that the angle between the dovetail shovel 410 and the horizontal plane remains unchanged during operation, thus ensuring the grooving effect. The tension of the auxiliary spring 470 is used to counteract the resistance during grooving and prevent the dovetail shovel 410 from swinging freely due to its connection with the profile frame via the parallel four-bar linkage unit 450.

[0059] In an optional embodiment, the soil covering component 500 includes a first soil covering plate 510 and a second soil covering plate 520; the first soil covering plate 510 and the second soil covering plate 520 are installed on the seed-fertilizer component 400 and form a V-shaped groove, the opening direction of the V-shaped groove being opposite to the first direction, such as... Figure 4 , Figure 5 As shown.

[0060] Furthermore, the bottom of the V-shaped groove is open. Specifically, the end of the first covering plate 510 protrudes from the end of the second covering plate 520 along the first direction to push the discharged soil away from the seeds, preventing excessive soil coverage. During the covering process, soil from both sides of the groove enters the V-shaped groove area through the opening of the V-shaped groove, while excess soil is discharged from the bottom opening of the V-shaped groove and pushed by the first covering plate 510 to one side of the second covering plate 520, preventing excessive soil from covering the groove.

[0061] In an optional embodiment, the compaction assembly 600 includes a compaction frame 610 and a compaction wheel 620. The compaction wheel 620 is rotatably mounted on the compaction frame 610 and used to roll the soil, thereby compacting the soil backfilled into the groove, ensuring good contact between the seeds and the soil, and preventing rapid water loss. By rolling the soil, the compaction assembly 600 makes the seeds adhere more tightly to the soil, preventing the seeds from being suspended in the air, improving water absorption capacity, and promoting germination.

[0062] Furthermore, the pressing assembly 600 also includes a second elastic connecting plate 630, which is connected to the contouring assembly 100. The pressing frame 610 is hinged to the second elastic connecting plate 630. The second elastic connecting plate 630 is used to apply downward pressure to the pressing frame 610, such as... Figure 8 As shown. The second elastic connecting plate 630 is arc-shaped, with the arc opening facing away from the seed and fertilizer component 400, in order to reduce the resistance generated by the pressing component 600 during the sowing process.

[0063] The stratified fertilization no-till precision seeder provided in this embodiment also includes a seed and fertilizer box, a seed dispenser, and a fertilizer dispenser. The seed and fertilizer box is used to store seeds and fertilizer separately. The seed dispenser is used to feed a fixed amount of seeds into the seeding tube 420, and the fertilizer dispenser is used to feed a fixed amount of fertilizer into the bottom fertilizer tube 320 and the top fertilizer tube 430. The seed and fertilizer box, seed dispenser, and fertilizer dispenser are all existing technologies used to achieve automatic seeding and fertilization, and will not be described in detail here.

[0064] The seeder provided in this embodiment uses a deep loosening guide rod 310 to loosen deep soil and a dovetail shovel 410 to loosen shallow soil, which is suitable for tillage operations. The deep loosening guide rod 310 loosens the soil to a depth of 0-30 cm, creating an optimal environment for the later development of plant roots. At the same time, 50% of the fertilizer can be applied as base fertilizer 0-30 cm directly below the crop to ensure sufficient fertilizer supply for the crop in the later stage. After loosening the soil with the dovetail shovel 410, the seeds are sprayed into the ground. The sowing row is 3-22 cm wide, forming a strip, making the most rational use of the land. At the same time, 50% of the fertilizer is sprayed as top dressing around the seeds to ensure sufficient fertilizer supply for the crop in the early stage. Furthermore, the coordinated operation of the trenching disc 210, the subsoil guide 310, and the dovetail shovel 410 ensures effective trenching. Without the trenching disc 210 cutting away roots and other debris, the subsoil guide 310 and dovetail shovel 410 would struggle to maintain their effectiveness. As roots and weeds attach, the resistance during operation increases, reducing the effective working area for trenching. Furthermore, the trenching disc 210 alone cannot achieve the two trenching depths needed to deliver base fertilizer and top dressing, and may result in areas where trenching is impossible. When the trenching disc 210 encounters an obstacle and bounces up, the subsoil guide 310 and the dovetail shovel, both extending below the soil surface, prevent any missing trenching areas.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A stratified fertilization no-till precision seeder, characterized in that, It includes a contouring component (100) and a trenching component (200), a base fertilizer component (300), a seed fertilizer component (400), a soil covering component (500), and a compaction component (600) that are sequentially installed on the contouring component (100) along a first direction; The trenching assembly (200) includes a trenching cutting disc (210) for forming grooves in the soil; The base fertilizer assembly (300) includes a deep loosening guide (310) and a base fertilizer pipe (320). The deep loosening guide (310) is used to enlarge the cutting groove, and the base fertilizer pipe (320) is used to feed base fertilizer into the enlarged cutting groove. The seed and fertilizer assembly (400) includes a dovetail shovel (410), a seeding tube (420), and a fertilizer inlet tube (430). The dovetail shovel (410) is used to widen the groove and the working depth is less than that of the deep loosening guide (310). The seeding tube (420) is used to feed seeds into the groove widened by the dovetail shovel (410), and the fertilizer inlet tube (430) is used to feed fertilizer into the groove widened by the dovetail shovel (410). The soil covering component (500) is used to push soil into the cutting groove to cover seeds and fertilizer; the compaction component (600) is used to compact the soil.

2. The stratified fertilization no-till precision seeder according to claim 1, characterized in that, The contouring assembly (100) includes a traction frame, wheels, a contouring frame, a first hydraulic cylinder, and a second hydraulic cylinder; The wheel is rotatably mounted on the contour frame, the first hydraulic cylinder and the second hydraulic cylinder are mounted on the traction frame, and the extended ends of the first hydraulic cylinder and the second hydraulic cylinder are connected to the contour frame; Two first hydraulic cylinders and two second hydraulic cylinders are arranged in a rectangular shape in a horizontal plane. The first hydraulic cylinders and the second hydraulic cylinders are arranged sequentially along a first direction, and the rod-side chamber of the first hydraulic cylinder and the rodless chamber of the second hydraulic cylinder are connected. The rodless chamber of the first hydraulic cylinder and the rod-side chamber of the second hydraulic cylinder are also connected.

3. The stratified fertilization no-till precision seeder according to claim 1, characterized in that, The trenching cutting disc (210) includes a circular slice (211) and a depth-limiting ring (212), the circular slice (211) and the depth-limiting ring (212) are coaxially connected and the diameter of the circular slice (211) is larger than the diameter of the depth-limiting ring (212).

4. The stratified fertilization no-till precision seeder according to claim 1, characterized in that, The base fertilizer assembly (300) also includes a shock-absorbing rod (330), the base fertilizer tube (320) is installed on the deep loosening guide (310), and the deep loosening guide (310) is hinged to the contour assembly (100); The shock absorber (330) is hinged at one end to the contouring assembly (100) and at the other end to the deep loosening guide (310), and is configured to apply a thrust to the deep loosening guide (310) in the opposite direction to the first direction.

5. The stratified fertilization no-till precision seeder according to claim 1, characterized in that, The seed fertilizer assembly (400) also includes a first elastic connecting plate (440), one end of which is connected to the contouring assembly (100), and the other end is equipped with the dovetail shovel (410), the seeding tube (420), and the fertilizer inlet tube (430). The first elastic connecting plate (440) is used to apply a thrust to the dovetail shovel (410) in the opposite direction to the first direction.

6. The stratified fertilization no-till precision seeder according to claim 1, characterized in that, The seed-fertilizer assembly (400) also includes a parallel four-bar linkage unit (450), an auxiliary wheel (460), and an auxiliary spring (470); The parallel four-bar linkage unit (450) consists of a first link (451), a second link (452), a third link (453), and a fourth link (454) that are hinged end to end in sequence. The first link (451) is vertically arranged and connected to the contouring component (100). The dovetail shovel (410), the seeding tube (420), and the fertilizer inlet tube (430) are installed on the third link (453). The auxiliary wheel (460) is mounted on the third link (453) and rolls along the ground; One end of the auxiliary spring (470) is connected to the first link (451), and the other end is connected to the fourth link (454), configured to apply a pulling force to the fourth link (454) in the opposite direction to the first direction.

7. The stratified fertilization no-till precision seeder according to claim 1, characterized in that, The soil covering assembly (500) includes a first soil covering plate (510) and a second soil covering plate (520); The first soil covering plate (510) and the second soil covering plate (520) are installed on the seed fertilizer assembly (400) and form a V-shaped groove, the opening direction of the V-shaped groove being opposite to the first direction.

8. The stratified fertilization no-till precision seeder according to claim 7, characterized in that, The bottom of the V-shaped groove is open.

9. The stratified fertilization no-till precision seeder according to claim 1, characterized in that, The compaction assembly (600) includes a compaction frame (610) and a compaction wheel (620), the compaction wheel (620) being rotatably mounted on the compaction frame (610) and used for rolling the soil.

10. The stratified fertilization no-till precision seeder according to claim 9, characterized in that, The pressing assembly (600) further includes a second elastic connecting plate (630), which is connected to the contouring assembly (100), and the pressing frame (610) is hinged to the second elastic connecting plate (630); The second elastic connecting plate (630) is used to apply downward pressure to the press frame (610).

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