A soybean hill-drop planter

Abstract

A soybean hole matrix seeder is provided to solve the problem of low light transmittance at the bottom of soybean plants, low pod setting and low yield of soybean plants due to "shading" after the existing seeder is used for seeding. A fertilizer tank is arranged above a main beam frame, a fertilizer trencher is arranged below the main beam frame, one end of a rubber fertilizer conveying pipe is connected with a fertilizer distributor at the bottom of the fertilizer tank, the other end of the rubber fertilizer conveying pipe is located between double-discs on the fertilizer trencher, fertilizer ground wheels are respectively arranged at the front end of both sides of the main beam frame, multiple seeding units are arranged side by side at the rear of the main beam frame, two seeding ground wheel mechanisms are symmetrically arranged at both sides of the multiple seeding units, each seeding unit comprises a single frame, a connecting seat, a pre-seeding compression depth limiting wheel, two sets of four-link mechanisms of the seeding unit, two sets of double-disc seeding trenchers, two seed boxes, two sets of soil covering and compressing wheels, four zero-speed seed feeding discs and four seed feeding discs; the utility model is used for seeding soybeans.

Description

Technical Field

[0001] This utility model relates to a seeder, specifically a soybean hole matrix seeder. Background Technology

[0002] Current soybean planters sow soybeans in a single line, resulting in rows that are typically 65-70 cm wide. The spacing between adjacent soybean seedlings is relatively small, causing the soybeans to "close the canopy" prematurely at the initial flowering stage. This leads to extremely low light penetration at the base of the soybean plant, causing the bottom 1-5 compound leaves to gradually yellow and eventually fall off due to lack of sunlight. The small pods, deprived of nutrients from the fallen leaves, also eventually fall off. This premature canopy closure results in "shading," which causes the bottom pods to grow too tall, preventing further yield increases. Utility Model Content

[0003] This invention addresses the problem of low light transmittance at the bottom of soybean plants after sowing using existing seeders, resulting in low pod set and low yield due to "shading" of soybean plants. It provides a soybean hole-type matrix seeder.

[0004] This utility model discloses a soybean hole-type matrix seeder, which comprises a main beam frame, fertilizer box, fertilizer furrow opener, rubber fertilizer conveying pipe, fertilizer wheel, seeder and seeding wheel mechanism.

[0005] The fertilizer box is located above the main beam frame, and the fertilizer furrow opener is located below the main beam frame. One end of the rubber fertilizer conveying pipe is connected to the fertilizer discharge device at the bottom of the fertilizer box, and the other end of the rubber fertilizer conveying pipe is located between the double discs on the fertilizer furrow opener. Fertilizer wheels are installed on both sides of the front end of the main beam frame. Multiple seeders are arranged side by side behind the main beam frame, and two seeding wheel mechanisms are symmetrically arranged on both sides of the multiple seeders. The front end of the seeding wheel mechanism is connected to the main beam frame.

[0006] Each seeder includes a single frame, a connecting seat, a pre-sowing compaction depth-limiting wheel, two sets of four-bar linkages, two support plates, two sets of double-disc seeders and furrow openers, two seed boxes, two sets of covering compaction wheels, four zero-speed seeding discs, and four seed metering discs. The two sets of four-bar linkages are arranged side-by-side at the front of the single frame. The front end of each four-bar linkage is hinged to the connecting seat, and the rear end is hinged to the vertical beam on the single frame. The pre-sowing compaction depth-limiting wheel is located below the four-bar linkages and is connected to the support plate. The plate is connected to the single frame. Two sets of double-disc seeders and furrow openers are arranged side by side behind the pre-sowing pressing depth limiting wheel. Each double-disc seeder and furrow opener contains two parallel zero-speed seeding discs. Above the two zero-speed seeding discs are two seed metering discs, and the two seed metering discs correspond one-to-one with the two zero-speed seeding discs. The two seed metering discs are staggered along the rotation direction. Above the two seed metering discs is a seed box. Two sets of soil covering and pressing wheels are arranged side by side behind the double-disc seeder and furrow opener, and the two sets of soil covering and pressing wheels correspond one-to-one with the front and rear of the two sets of double-disc seeders and furrow openers.

[0007] Furthermore, each set of double-disc seeders and furrow openers includes a front fixing plate, a cover, a U-shaped plate, an arc-shaped retaining plate, a seed pressing wheel shaft, a seed pressing wheel scraping plate, two retaining plates, two inner plates, two furrowing discs, two disc bearing seats, two nut pillars, two vertical plates, two furrowing scraping plates, two seed pressing wheels, and two seed pressing wheel bearing seats. The two retaining plates are arranged in parallel. The front fixing plate is fixed to the front end of the retaining plates, and the cover is fixed to the rear end of the retaining plates. The front end plate on the cover divides the cavity between the two retaining plates into a seed tray installation cavity and a seed pressing wheel installation cavity. The two inner plates are symmetrically conical with respect to the longitudinal center line of the furrow opener at the front end of the front fixing plate, and the conical angle of the two inner plates is the rear conical angle. The two furrowing discs are symmetrically conical with respect to the longitudinal center line of the furrow opener on the outer side of the two inner plates. The ditching disc has a front cone angle that is equal to the rear cone angle. A disc bearing seat is located at the center of each ditching disc and is fixed to a threaded shaft. The threaded shaft passes through the ditching disc and is threaded to the threaded hole on the nut column. The nut column is fixed to the inner plate. Two vertical plates are symmetrically arranged above the ditching disc with respect to the longitudinal center line of the ditcher. A U-shaped plate is located in front of the vertical plates and is fixed to them. Two ditching scraper plates are symmetrically arranged on the two outer sides of the U-shaped plate. An arc-shaped retaining plate is located above the space between the two ditching discs. Two seed pressing wheels are arranged parallel to each other in the seed pressing wheel mounting cavity and are fitted onto the seed pressing wheel shaft. Seed pressing wheel bearing seats are installed at both ends of the seed pressing wheel shaft and outside the retaining plate. The seed pressing wheel bearing seats are fixed to the retaining plate. The seed pressing wheel scraper plates are installed behind the two seed pressing wheels.

[0008] Furthermore, six sets of pits are evenly distributed on the outer circumference of the seed metering disc. The circumferential angle between each pair of adjacent sets of pits is the hole spacing angle. There are two pits in each set, and the circumferential angle between the two pits is the pit angle. A short tooth is provided behind the front pit in each set of pits along the clockwise direction, and a long tooth is provided behind the rear pit in each set of pits along the clockwise direction. A seed cleaning groove is provided on the outer circumferential surface of the seed metering disc along the center line of the pit width direction. The center of the seed metering disc has a hexagonal hole, and a hexagonal seed metering shaft is installed in the hexagonal hole.

[0009] Furthermore, the acupoint angle is 50°, and the included angle of the pit is 10°.

[0010] Furthermore, the distance between the two seed pressing wheels is 5cm, the distance between the two zero-speed seeding discs is 5cm, and the distance between the two clock facets is 5cm.

[0011] Furthermore, the two seeding discs are offset by 5° along the direction of rotation.

[0012] Furthermore, the sowing wheel mechanism includes a front beam of the support frame, a rear beam of the support frame, a four-bar linkage mechanism for the sowing wheel, a front support plate, a rear support plate, a front drive shaft, a wheel shaft, a small sprocket, a large sprocket, a sowing wheel chain, a sowing wheel, a 90° steering telescopic drive shaft, a bulldozer blade, and two side plates. The front end of the four-bar linkage mechanism for the sowing wheel is hinged to the front beam of the support frame, and the rear end of the four-bar linkage mechanism is hinged to the rear beam of the support frame. The front support plate is fitted onto the rear beam of the support frame and fixedly connected to it. The two side plates are symmetrically arranged on both sides of the front support plate and connected to the front support. The support plate is fixedly connected, and the rear support plate is set at the rear end between the two side plates and fixedly connected to the two side plates. The front drive shaft is installed at the front end of the two side plates through bearings, and the ground wheel shaft is installed at the rear end of the two side plates through bearings. The small sprocket is fixedly installed on the front drive shaft, and the large sprocket is fixedly installed on the ground wheel shaft. The two ends of the sowing ground wheel chain are connected to the small sprocket and the large sprocket respectively. The sowing ground wheel is located between the two side plates and installed on the ground wheel shaft. The input end of the 90° steering telescopic drive shaft is connected to the front drive shaft, and the bulldozer blade is connected to the rear beam of the support through the connecting rod on it.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] I. Using the seeder of this utility model, intermittent strip sowing can be achieved on two lines. The width of the sown strips is about 80cm. The seedlings are arranged in a matrix pattern of "4 seeds per hole with equal spacing in a triangular shape".

[0015] II. Most existing seeders use a single-row sowing method, while some use a double-row sowing method with two rows spaced 10-12 cm apart on 65 cm ridges. The seed pressing wheel on these machines is driven (non-rotating, self-propelled) and lacks a scraper. This makes it easy for the seed pressing wheel to pick up wet soil when the soil is wet, and seeds may stick to the wet soil, resulting in inconsistent sowing depth and preventing accurate seed placement. The seed pressing wheel of this invention rotates and is equipped with a scraper A6-7. When the soil is wet, the scraper removes the wet soil adhering to the seed pressing wheel, ensuring that the wheel does not pick up seeds and thus guaranteeing consistent sowing depth.

[0016] Thirdly, existing seed metering trays consist of several identical pits or holes evenly distributed on the tray (e.g., air-suction or air-blowing seed metering trays). These trays can only provide a uniform and continuous flow of seeds, resulting in uniform row sowing when planted in the ground. The seed metering tray of this invention can discharge six groups of seeds in one rotation, with two seeds per group (this is one small unit). The distance between the two seeds after they fall into the seed furrow is 5 cm. This 5 cm distance is controlled by the angle between the two pits on the seed metering tray. The distance between two adjacent small units is controlled by the hole spacing angle on the seed metering tray. The distance between two adjacent small units is the "hole spacing." Therefore, the seed metering tray provides a hole sowing method with four seeds per hole, evenly distributed in a symmetrical pattern.

[0017] Fifth, due to the influence of seed inertia and the velocity of the plumb bob as the seeds fall from the seed drill, they are prone to colliding and bouncing with soil clods in the furrow, resulting in uneven sowing spacing. Existing seed drills have a sowing height of 20-40 cm, which results in a high plumb bob velocity when the seeds fall into the furrow. Combined with the significant inertia, this easily leads to uneven sowing spacing caused by seed collisions and bouncing with soil clods. The zero-speed seeding disc of this invention has a sowing height of 7 cm, which is significantly lower than that of existing seed drills. This results in lower seed inertia and less bouncing when seeds collide with soil clods, thus ensuring an accurate 5 cm spacing between two seeds.

[0018] VI. The weight of each sowing machine on each large ridge and the downward pulling force of the tension spring on the four-bar linkage mechanism of the sowing machine are both borne by the pre-sowing pressing and depth-limiting wheel. During sowing, the pre-sowing pressing and depth-limiting wheel first flattens the soil turned up after fertilization, maintaining the flatness of the ridge surface, and then covers the fertilizer after fertilization with soil, ensuring that the seeds sown later are separated from the fertilizer and avoiding the occurrence of fertilizer burning the seeds. At the same time, the pre-sowing pressing and depth-limiting wheel and the four-bar linkage mechanism of the sowing machine work together to ensure the uniformity of the sowing furrow depth of the sowing machine.

[0019] VII. The soil covering and pressing wheel of this utility model serves to cover and compact the soil at the same time. The soil scraper of the pressing wheel and the soil covering scraper smooth out the uneven ridge surface formed by the soil covering and pressing wheel to ensure the consistency of the sowing depth.

[0020] 8. Because this utility model implements a "1 hole, 4 seeds, equally spaced, triangular distribution" hill-sowing matrix method, it increases the distance between adjacent soybeans in the vertical direction and also increases the distance between adjacent soybeans in the horizontal direction (reaching 80 cm). This improves the light transmittance at the bottom of the soybean plant and the ventilation between the soybean seedlings, allowing each soybean plant to fully enjoy the advantages of the "marginal effect zone". It also delays the time when the soybean "closes the canopy", ensuring that the bottom of the soybean plant receives sufficient sunlight. This achieves the goal of more flowers, more pods, better pod setting, and lower pod setting, fundamentally solving the problem of low yield caused by "shading" of soybean plants.

[0021] 9. Because this utility model implements a "1 hole 4 seeds equally spaced in a triangular pattern" hole sowing matrix method, each soybean plant has a spatial gap of 15-20 cm on one side, which is not only conducive to the development of a strong plant with a thicker stem, but also conducive to promoting the production of branches, thereby increasing the number of seeds per soybean plant.

[0022] 10. Traditional sowing methods result in narrow row spacing for soybean plants, which leads to insufficient light penetration to the base of the plants during canopy closure. This results in excessively tall pods and an average of only three pods surviving per leaf node, thus missing the opportunity for high soybean yield potential. Furthermore, in traditionally sown soybeans, the leaves at the base of the plant gradually yellow and fall off due to insufficient sunlight after canopy closure, and the flower pods on the corresponding leaves also wither due to nutrient depletion. The 80 cm wide "marginal effect zone" created by this invention provides ample sunlight to the flower buds and leaves at the base of the soybean plant during flowering, ensuring sufficient nutrient supply and creating highly favorable light conditions for the formation of the first and second inflorescences at nodes 3-8. An average of more than 10 flower buds per leaf node forms the foundation for high soybean yield potential. Based on actual observations of soybean growth, the stems of soybean plants sown using the seeder of this invention are gradually thickening, reaching a state of lush foliage. Therefore, sowing using this invention can increase the area of ​​the leaves on the sides of the soybean plants that receive light, greatly enhancing the overall photosynthesis of the soybean plants and achieving the goal of increasing soybean yield.

[0023] XI. Soybeans require a large supply of nutrients during the flowering period, and a single foliar application of fertilizer is far from sufficient. At this time, topdressing through cultivation is necessary to convert nutrients absorbed from the soybean roots into nutrients needed for the flowers and the plant. However, current soybean planting methods cannot meet the needs of topdressing due to their traditional methods, thus this beneficial measure for increasing soybean yield has not been implemented. The 20-centimeter spacing between the double seedling strips in this invention perfectly solves the technical requirements for topdressing during the initial flowering stage of soybeans, creating a solid and reliable foundation for high soybean yields. Attached Figure Description

[0024] Figure 1 This is a front view of the overall structure of this utility model;

[0025] Figure 2 This is a top view of multiple seeding mechanisms A arranged side by side;

[0026] Figure 3 This is the front view of the seeding mechanism A;

[0027] Figure 4 This is a structural diagram of the sowing mechanism A (remove the outer shell of the seed metering disc A8 and the outer shell of the zero-speed seed feeder A7; the markings in the diagram are: O - ground, Z - seed, G - seed furrow, D - furrow bottom, H - sowing furrow depth).

[0028] Figure 5 This is a three-dimensional diagram of the seeding mechanism A;

[0029] Figure 6 This is a top view of a single seeder A when sowing a large ridge;

[0030] Figure 7 This is a 3D view of the A6 double-disc seeder / furrow opener;

[0031] Figure 8 This is the front view of the A6 dual-disc seeder / furrow opener;

[0032] Figure 9 yes Figure 8 A bottom view;

[0033] Figure 10 yes Figure 8 Top view;

[0034] Figure 11 yes Figure 8 The right view;

[0035] Figure 12 yes Figure 8 The left view;

[0036] Figure 13 yes Figure 9A magnified view of part of I;

[0037] Figure 14 This is the front view of seeding tray A8;

[0038] Figure 15 yes Figure 14 The left view;

[0039] Figure 16 This is a schematic diagram showing that the two seeding discs A8 corresponding to a double-disc seeder A6 are staggered by 5° along the direction of rotation.

[0040] Figure 17 This is the front view of the seeding wheel mechanism 6;

[0041] Figure 18 yes Figure 17 Top view;

[0042] Figure 19 This is a top view of the seeding wheel mechanism 6;

[0043] Figure 20 This describes the transmission principle of the seeding wheel mechanism 6 traction seeding mechanism A;

[0044] Figure 21 yes Figure 20 Top view;

[0045] Figure 22 yes Figure 6 A bottom view;

[0046] Figure 23 This is a schematic diagram showing the seedling strips after sowing using a soybean hole matrix seeder, which are arranged in a matrix pattern of "4 seeds per hole with equal spacing in a triangular shape".

[0047] Figure 24 yes Figure 23 A bottom view;

[0048] Figure 25 yes Figure 23 Enlarged view of part II;

[0049] Figure 26 This is the front view of the zero-speed seeding disc A7 (marked in the figure: A7-2 - groove, A7-3 - seeding teeth);

[0050] Figure 27 yes Figure 26 The left view; Detailed Implementation

[0051] Specific implementation method one: Combining Figure 1 , Figure 2 Figure 3 and Figure 6This embodiment describes a main beam frame 1, a fertilizer box 2, a fertilizer furrow opener 3, a rubber fertilizer delivery pipe 4, a fertilizer wheel 5, a single seeder A, and a seeding wheel mechanism 6. (See attached diagram) Figure 1 The fertilizer tank 2 is positioned above the main beam frame 1, and the fertilizer applicator 3 is positioned below the main beam frame 1. One end of the rubber fertilizer delivery pipe 4 is connected to the fertilizer discharge device 2-1 at the bottom of the fertilizer tank 2, and the other end of the rubber fertilizer delivery pipe 4 is located between the double discs on the fertilizer applicator 3. The fertilizer applicator 3 is a double disc applicator (existing technology). Fertilizer wheels 5 are installed on both sides of the front end of the main beam frame 1. Figure 1 The fertilizer wheel 5 supports the weight of the entire seeder and, when pulled by a tractor, drives the fertilizer discharge wheel in the fertilizer discharge device 2-1 at the bottom of the fertilizer tank 2 via a chain transmission mechanism. This ensures that the measured amount of fertilizer output through the fertilizer discharge device 2-1 flows along the rubber fertilizer delivery pipe 4 into the fertilizer furrow opened by the fertilizer furrow opener 3 below, completing the fertilization operation. Multiple single seeders A are arranged side by side behind the main beam frame 1, see... Figure 2 The specific number of seeders A depends on the width of the rows, usually 4 to 6. Seeder A corresponds one-to-one with fertilizer box 2; two seeding wheel mechanisms 6 are symmetrically arranged on both sides of the multiple seeders A, see... Figure 2 The front end of the seeding wheel mechanism 6 is connected to the main beam frame 1, see... Figure 2 , Figure 17 , Figure 18 ;

[0052] Each seeder A includes a single frame A2, a connecting seat A3, a pre-sowing compaction depth limiting wheel A4, two sets of four-bar linkage mechanisms for seeders A1, two support plates A5, two sets of double-disc seeders and furrow openers A6, two seed boxes A9, two sets of soil covering and compaction wheels A10, four zero-speed seeding discs A7, and four seed metering discs A8. (See details...) Figure 2 Two sets of four-bar linkage mechanisms A1 for single seeders are arranged side by side at the front end of the single frame A2, see Figure 3 and Figure 6 The front end of the four-bar linkage A1 of the single-sowing machine is hinged to the connecting seat A3. The front end of the connecting seat A3 is fixedly connected to the rear main beam 1-3 on the main beam frame 1. The rear end of the four-bar linkage A1 of the single-sowing machine is hinged to the vertical beam A2-1 on the single frame A2. See Figure 3 The pre-sowing compaction depth limiting wheel A4 is located below the four-bar linkage A1 of the single-seeding machine, see... Figure 3 The pre-sowing pressing depth-limiting wheel A4 is connected to the single frame A2 via the support plate A5, see... Figure 5 Two support plates A5 are symmetrically arranged on both sides of the pre-seeding compaction depth limiting wheel A4. One end of the support plate A5 is installed on the axle of the pre-seeding compaction depth limiting wheel A4, and the other end of the support plate A5 is fixedly connected to the bottom crossbeam A2-2 on the single frame A2. See Figure 5Two sets of double-disc seeders and furrow openers A6 are arranged side by side behind the pre-sowing compaction depth limiting wheel A4, see... Figure 6 The vertical plate A6-10 on the double-disc seeder A6 is connected to the single frame A2 via a connecting element, see... Figure 4 The cover A6-3 on the double-disc seeder A6 is connected to the single frame A2 via a connecting element, see... Figure 5 Each double-disc seeder A6 has two parallel zero-speed seeding discs A7 installed inside the seeding disc mounting cavity A6-4. (See...) Figure 3 , Figure 5 , Figure 6 and Figure 9 The outer shell of the zero-speed seeding disc A7 is fixedly connected to the soil retaining plate A6-1 on the double-disc seeder A6, see... Figure 5 Above the two zero-speed seeding trays A7 are two seed metering trays A8, and the two seed metering trays A8 correspond one-to-one with the two zero-speed seeding trays A7, see... Figure 6 The two seeding discs A8 are offset along the direction of rotation, see Figure 16 In this way, the four seeds discharged from the two seed discharging trays A8 can form a "four seeds per hole, equidistant" distribution; the outer shell of the seed discharging tray A8 is connected to the single frame A2 via connecting elements, see Figure 3 Above each of the two seed trays A8 is a corresponding seed box A9, and the seed box A9 is fixedly connected to the single frame A2, see Figure 3 , Figure 4 and Figure 5 Two sets of soil-covering and pressing wheels A10 are arranged side-by-side behind the double-disc seeder and furrow opener A6, with each set of soil-covering and pressing wheels A10 corresponding one-to-one with the two sets of double-disc seeders and furrow openers A6. The soil-covering and pressing wheels A10 are existing technology. The soil-covering and pressing wheels A10 are connected to the single-unit frame A2 via a traction frame A10-1. (See...) Figure 4 and Figure 5 Behind the traction frame A10-1, there is also a compaction wheel scraper A10-2, which scrapes the soil off the compaction wheel A10.

[0053] The main beam frame 1 is welded together with three square tubes (upper main beam 1-1, lower main beam 1-2, and rear main beam 1-3) and the main beam connecting plate 1-4. The upper main beam 1-1 has one upper suspension frame 1-5 welded on, and the lower main beam 1-2 has two lower suspension frames 1-6 welded on. (See attached image) Figure 1 This seeder is connected to the three-point suspension on the tractor via the upper suspension frame 1-5 and the lower suspension frame 1-6. The fertilizer box 2 is connected to the main beam connecting plate 1-4 by bolts.

[0054] The fertilizer ditch opener 3, fertilizer wheel 5, zero-speed seeding disc A7, and soil covering and compaction wheel A10 are all existing technologies.

[0055] The four-bar linkage A1 of the seeder is also called the four-bar contour transmission mechanism, which is a commercially available product. The function of the four-bar linkage A1 is to connect the contouring components. The four-bar linkage A1 pulls the single-unit frame A2 forward. The single-unit frame A2 carries the pre-sowing compaction depth limiting wheel A4, the double-disc seeder and furrow opener A6, the seed box A9, the soil covering compaction wheel A10, the zero-speed seeding disc A7, and the seed metering disc A8, etc., moving forward while simultaneously opening furrows and sowing. When the ground is uneven, the single-unit frame A2 can move forward by following the rise and fall of the ground contouring mechanism, thus ensuring consistency in sowing and furrowing depths.

[0056] Specific Implementation Method Two: Combining Figures 5-13 This embodiment describes each set of double-disc seeders and furrow openers A6, which includes a front fixing plate A6-2, a cover A6-3, a U-shaped plate A6-11, an arc-shaped soil-blocking plate A6-13, a seed pressing wheel shaft A6-14, a seed pressing wheel scraping plate A6-17, two soil-blocking plates A6-1, two inner plates A6-6, two furrowing discs A6-7, two disc bearing seats A6-8, two nut pillars A6-9, two vertical plates A6-10, two furrowing scraping plates A6-12, two seed pressing wheels A6-15, and two seed pressing wheel bearing seats A6-16. (See attached diagram.) Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 Two retaining plates A6-1 are set in parallel, and the front fixing plate A6-2 is fixed to the front end of the retaining plate A6-1, see... Figure 9 , Figure 10 The cover A6-3 is fixed to the rear end of the retaining plate A6-1, see... Figure 7 , Figure 8 The front end plate A6-3-1 on the cover A6-3 divides the cavity between the two retaining plates A6-1 into the seed tray installation cavity A6-4 and the seed pressing wheel installation cavity A6-5, see... Figure 9 Two inner plates A6-6 are symmetrically tapered relative to the longitudinal centerline NN of the trencher and positioned at the front end of the front fixed plate A6-2. The cone angle of the two inner plates A6-6 is the rear cone angle θ. (See...) Figure 9 and Figure 13 The two inner plates A6-6 are welded together at their tapered corners, and the rear ends of the two inner plates A6-6 are welded together with the front fixed plate A6-2. See [link / details]. Figure 9 and Figure 13 Two trenching discs A6-7 are symmetrically tapered relative to the longitudinal centerline NN of the trencher, positioned outside the two inner plates A6-6. The cone angles of the two trenching discs A6-7 are the front cone angle δ, and the front cone angle δ is equal to the rear cone angle θ. (See...) Figure 9 and Figure 13The front cone angle δ is 23°~25°, and a disc bearing seat A6-8 is provided at the center of each grooved disc A6-7, see Figure 7 , Figure 8 and Figure 12 The disc bearing housing A6-8 is fixedly mounted on the threaded shaft. The threaded shaft passes through the grooved disc A6-7 and is threadedly connected to the threaded hole on the nut post A6-9. The nut post A6-9 is fixedly connected to the inner plate A6-6. (See...) Figure 13 Two vertical plates A6-10 are symmetrically positioned above the trenching disc A6-7 with respect to the longitudinal center line NN of the trencher. Figure 7 , Figure 8 Hejian Figure 12 The vertical plate A6-10 is connected to the single frame A2 via connecting elements. The U-shaped plate A6-11 is located in front of the vertical plate A6-10 and is fixedly connected to the vertical plate A6-10. See Figure 7 Two trenching scraper blades A6-12 are symmetrically arranged on the two outer sides of the U-shaped plate A6-11, and the trenching scraper blades A6-12 are connected to the vertical edges of the U-shaped plate A6-11 by connecting elements, see Figure 7 The trenching scraper A6-12 can scrape away the soil adhering to the trenching disc A6-7. The curved retaining plate A6-13 is positioned above the space between the two trenching discs A6-7, with one end of the curved retaining plate A6-13 fixed to the U-shaped plate A6-11. The curvature of the curved retaining plate A6-13 is equal to the circumferential curvature of the trenching discs A6-7. Since there is a gap between the two trenching discs A6-7, the curved retaining plate A6-13 prevents soil from entering the soil between the two trenching discs A6-7 through the gap. See [link / description]. Figure 7 , Figure 8 and Figure 12 Two seed pressing wheels A6-15 are arranged in parallel within the seed pressing wheel mounting cavity A6-5 and fitted onto the seed pressing wheel shaft A6-14, see... Figure 9 At both ends of the seed pressing wheel axle A6-14 and outside the retaining plate A6-1, seed pressing wheel bearing seats A6-16 are installed. The seed pressing wheel bearing seats A6-16 are fixedly connected to the retaining plate A6-1. See Figure 7 , Figure 8 , Figure 9 and Figure 10 The A6-17 seed pressing wheel scraper is installed behind the two A6-15 seed pressing wheels, see... Figure 4 Hejian Figure 11 It is connected to the single frame A2 via connecting elements using the connecting holes on the vertical plate A6-10, see Figure 4 , Figure 7 The cover A6-3 is connected to the single frame A2 via connecting elements, see... Figure 5The trenching scraper A6-12 can scrape off the soil adhering to the trenching disc A6-7, preventing the trenching disc A6-7 from carrying soil and affecting the trenching depth and width; the seed pressing wheel scraper A6-17 can scrape off the soil adhering to the seed pressing wheel A6-15, thus ensuring that the seed pressing wheel does not carry seeds.

[0057] When two sets of double-disc seeders and furrow openers A6 are installed side by side in the seeder A, see Figure 6 The two sets of double-disc seeders and furrow openers A6 are connected by a seed pressing wheel connecting shaft A11, a seed feeding transmission connecting shaft A12, and a seed metering transmission connecting shaft A13, as shown in the figure. Figure 6 The two ends of the seed pressing wheel connecting shaft A11 are respectively connected to its corresponding seed pressing wheel shaft A6-14, see Figure 6 The two ends of the seeding drive connecting shaft A12 are respectively connected to the seeding shaft A7-1 on its corresponding zero-speed seeding disc A7, see... Figure 6 The two ends of the seed metering drive connecting shaft A13 are respectively connected to its corresponding seed metering shaft A8-6, see... Figure 6 .

[0058] Specific implementation method three: Combining Figure 14 and Figure 15 In this embodiment, the seed metering disc A8 has six sets of recesses A8-1 evenly distributed on its outer circumferential surface, see... Figure 14 The circumferential angle between any two adjacent groups of pits A8-1 is the pit-distance angle β. Each group of pits A8-1 consists of two pits, and the circumferential angle between these two pits is the pit-inclusive angle α. In each group of pits A8-1, a short pawl A8-2 is located behind the front pit A8-1 in a clockwise direction, and a long pawl A8-3 is located behind the rear pit A8-1 in a clockwise direction. (See...) Figure 14 On the outer circumference of the seed metering disc A8, along the center line of the width direction of the recess A8-1, a seed cleaning groove A8-4 is provided, see Figure 15 The seed metering disc A8 has a hexagonal hole A8-5 in the center, and a hexagonal seed metering shaft A8-6 is installed inside the hexagonal hole A8-5. (See...) Figure 14 and Figure 15 The short teeth A8-2 and long teeth A8-3 are designed to smoothly grasp the seed and instantly reduce the relative speed between the seed and the seed metering tray A8 to zero, facilitating the seed's smooth entry into the recess A8-1 and ensuring a 100% seed filling rate, thus avoiding any empty seed holes. The seed metering tray A8 is an internally filled seed metering tray, see... Figure 14 , Figure 15 The seed metering shaft A8-6 rotates, driving the seed metering disc A8 to complete the precision seeding operation. The recess A8-1 is used to achieve precision seeding by filling each recess with one seed.

[0059] Specific implementation method four: Combination Figure 16 In this embodiment, the hole spacing angle β is 50° and the pit angle α is 10°. After sowing according to these angle values, the seeds Z in the seed furrow G are exactly "4 seeds per hole in an equidistant triangular pattern".

[0060] Specific Implementation Method Five: Combining Figure 22 In this embodiment, the distance between the two seed pressing wheels A6-15 is 5cm, the distance between the two zero-speed seeding discs A7 is 5cm, and the distance between the two seed clock discs A8 is 5cm. Following these values, the seeds in the seed furrow G will meet the requirement of "4 seeds per hole, equidistantly distributed in a triangular pattern".

[0061] Specific Implementation Method Six: Combination Figure 16 In this embodiment, the two seed-rearing discs A8 are offset by 5° along the direction of rotation. This design ensures that the seeds falling into the seed furrow G are distributed in a "4 seeds per hole, equidistant triangular pattern".

[0062] Specific implementation method seven: Combining Figure 17 and Figure 18 This embodiment describes the sowing wheel mechanism 6, which includes a front support beam 6-1, a rear support beam 6-2, a four-bar linkage 6-3, a front support plate 6-4, a rear support plate 6-5, a front drive shaft 6-6, a wheel shaft 6-7, a small sprocket 6-8, a large sprocket 6-9, a sowing wheel chain 6-10, a sowing wheel 6-11, a 90° steering telescopic drive shaft 6-12, a bulldozer blade 6-13, and two side plates 6-14. (See attached diagram.) Figure 17 and Figure 18 The front end of the four-bar linkage 6-3 of the sowing wheel is hinged to the front beam 6-1 of the support, and the rear end of the four-bar linkage 6-3 of the sowing wheel is hinged to the rear beam 6-2 of the support. (See...) Figure 17 The front support plate 6-4 is fitted onto the rear beam 6-2 of the bracket and fixedly connected to the rear beam 6-2 of the bracket, see... Figure 18 Two side plates 6-14 are symmetrically arranged on both sides of the front support plate 6-4 and fixedly connected to it. A rear support plate 6-5 is located at the rear end between the two side plates 6-14 and fixedly connected to them. The front drive shaft 6-6 is mounted on the front end of the two side plates 6-14 via bearings. The ground wheel shaft 6-7 is mounted on the rear end of the two side plates 6-14 via bearings. A small sprocket 6-8 is fixedly mounted on the front drive shaft 6-6, and a large sprocket 6-9 is fixedly mounted on the ground wheel shaft 6-7. The two ends of the sowing ground wheel chain 6-10 are connected to the small sprocket 6-8 and the large sprocket 6-9 respectively. The sowing ground wheel 6-11 is located between the two side plates 6-14 and mounted on the ground wheel shaft 6-7. The input end of the 90° steering telescopic drive shaft 6-12 is connected to the front drive shaft 6-6. (See...) Figure 18The output end of the 90° rotating telescopic drive shaft 6-12 is connected to the seeding shaft A7-1 on the zero-speed seeding disc A7, see... Figure 19 The bulldozer blade 6-13 is connected to the rear beam 6-2 of the support frame via a connecting rod 6-13-1. The connecting rod 6-13-1 can be adjusted up and down within the rear beam 6-2 of the support frame and is fixed by a set screw 6-13-2. See [link / description]. Figure 17 The bulldozer blade 6-13 can remove larger clods of soil to prevent them from getting stuck on the seeding wheel 6-11 and causing the seedlings to break.

[0063] Working principle of soybean hill-type matrix planter:

[0064] See Figure 19 When the sowing wheel mechanism 6 is pulled forward by the tractor, the sowing wheel 6-11 rotates and moves forward, driving the large sprocket 6-9 to rotate. The large sprocket 6-9 then transmits power to the small sprocket 6-8 at the front via the sowing wheel chain 6-10. The small sprocket 6-8 transmits power to the 90° steering telescopic drive shaft 6-12 via the front drive shaft 6-6. Since the other end of the 90° steering telescopic drive shaft 6-12 is connected to the seeding shaft A7-1 on the zero-speed seeding disc A7, the transmission sprocket 8 in the gearbox 7 is fixed to the seeding shaft A7-1. See Figure 19 and Figure 20 The transmission sprocket 8 drives the seed metering disc sprocket 10 to rotate via the transmission chain 9. Figure 19 The seed metering disc sprocket 10 is fixedly mounted on the seed metering shaft A8-6. Therefore, the 90° rotating telescopic drive shaft 6-12 drives the seed feeding shaft A7-1 and the drive sprocket 8 to rotate. Figure 19 The seed metering disc sprocket 10 and the seed metering shaft A8-6 are rotated via the transmission chain 9, thereby realizing the rotation of the seed metering disc A8; since the seed pressing wheel input sprocket 11 is fixed on the seed feeding shaft A7-1, see Figure 19 , Figure 20 and Figure 21 The seed pressing wheel input sprocket 11 is connected to the seed pressing wheel output sprocket 13 via the seed pressing wheel chain 12, see... Figure 19 , Figure 20 and Figure 21 The output sprocket 13 of the seed pressing wheel is fixedly mounted on the seed pressing wheel shaft A6-14, see Figure 20 and Figure 21 Therefore, as the seed pressing wheel input sprocket 11 rotates with the seed feeding shaft A7-1, it drives the seed pressing wheel output sprocket 13 and the seed pressing wheel shaft A6-14 to rotate via the seed pressing wheel chain 12, see... Figure 19 , Figure 20 and Figure 21 This allows the seed pressing wheel A6-15 to rotate.

[0065] The following are the transmission paths and rotation directions of each drive shaft:

[0066] 1. Rotation of the seed metering shafts A8-6 on the entire seeder: The two seed metering shafts A8-6 on each seeder A are connected by a seed metering drive connecting shaft A13 via a connecting sleeve, see... Figure 6 The seed metering shaft A8-6 between the two seeders A is connected by a universal telescopic contour drive shaft 14, see... Figure 2 When the transmission shaft A8-6 in gearbox 7 rotates, see... Figure 20 The seed metering shaft A8-6 on the adjacent seeding machine A, connected via the universal telescopic contour drive shaft 14, rotates accordingly. Figure 2 This causes the seed metering shaft A8-6 of the entire seeder to rotate in the opposite direction.

[0067] 2. Rotation of the seeding shaft A7-1 on the entire seeder: The two seeding shafts A7-1 on each seeder A are connected by a seeding transmission connecting shaft A12 via a connecting sleeve, see... Figure 6 The seeding shaft A7-1 between the two seeders A is connected by a universal telescopic contour drive shaft 14, see... Figure 2 When the seeding shaft A7-1 in the transmission gearbox 7 rotates, see... Figure 20 The seeding shaft A7-1 on the adjacent seeding machine A, connected by the universal telescopic contour drive shaft 14, rotates accordingly. Figure 2 This causes the seeding shaft A7-1 of the entire seeder to rotate in the positive direction.

[0068] 3. Transmission of the seed pressing wheel shaft A6-14 on the entire seeder: The two seed pressing wheel shafts A6-14 on each seeder A are connected by a seed pressing wheel connecting shaft A11 through a connecting sleeve, see... Figure 6 The seed pressing wheel axle A6-14 between the two seeders A is connected by a universal telescopic contour drive shaft 14, see... Figure 2 When the seed roller shaft A6-14 in the transmission gearbox 7 rotates, it is observed... Figure 20 The seed pressing wheel shaft A6-14 on the adjacent seeding machine A, connected by the universal telescopic contour drive shaft 14, rotates accordingly. Figure 2 This causes the seed pressing wheel shaft A6-14 of the entire seeder to rotate in the positive direction.

[0069] This invention enables a method for soybean hill-type matrix sowing:

[0070] Step 1: When the tractor drives the sowing wheel mechanism 6 forward, the double disc sowing furrow opener A6 works and opens two seed furrows G, each 5 cm wide. Two furrowing discs A6-7 with a front cone angle δ open the soil into two seed furrows G with a width of 5 cm. The soil outside the two seed furrows G is blocked by their respective soil retaining plates A6-1 to prevent soil from flowing back into the opened seed furrows G, thus ensuring that the seeds put in by the seed dispensing disc A8 fall smoothly into the seed furrows G. In this step, the front cone angle δ is 23°~25°.

[0071] Step 2: Seed Z enters the seed metering tray A8 from seed box A9 via seed guide tube;

[0072] Step 3: After the seeds Z complete the filling, cleaning and discharging process with the rotating seed metering disc A8, the intermittent but uniform seeds flow into the zero-speed seeding disc A7.

[0073] Step 4: The zero-speed seeding tray A7 puts the seeds Z into the seed furrow G in a zero-speed seeding manner. According to the assembly relationship of a seeding machine A containing four seeding trays A8 and four zero-speed seeding trays A7, the seeds Z that finally fall into the two seed furrows G are arranged in a "1 hole, 4 seeds, equally spaced in a triangular pattern" when viewed from the horizontal top view. The zero-speed seeding method is the existing technology.

[0074] Step 5: The seed pressing wheel A6-15 in the double-disc seeder A6 presses the seeds into the moist soil of the seed furrow G. The seed pressing wheel A6-15 plays a role in accurately positioning the sowing depth.

[0075] Step Six: After compaction, covering, and scraping with the A10 soil-covering and compacting wheel, the hole-planting operation is completed. The seedlings after planting are arranged in a matrix pattern of "4 seeds per hole, evenly spaced in a triangular shape," as shown in the image. Figure 23 and Figure 24 .

[0076] The "4 seeds per hole, evenly spaced in a triangular pattern" arrangement in step four above is achieved by the seed metering disc A8 using the following method: Each seeder A contains four seed metering discs A8, see... Figure 6 One of the double-disc seeders, A6, corresponds to two zero-speed seeding discs A7 and two seed metering discs A8. The four seed metering discs A8, from left to right, are: first seed metering disc 1A8, second seed metering disc 2A8, third seed metering disc 3A8, and fourth seed metering disc 4A8. The distance between the first seed metering disc 1A8 and the second seed metering disc 2A8 is 5 cm, and the distance between the third seed metering disc 3A8 and the fourth seed metering disc 4A8 is 5 cm. (See...) Figure 6 The first row of seed trays 1A8 and the second row of seed trays 2A8 are installed at an angle offset by α / 2 along the direction of rotation, see... Figure 16 Each seed-discharging disc A8 rotates once to discharge six groups of seeds (i.e., 12 seeds). Two seeds Z from each group fall into the seed furrow G, with a distance of 5 cm between the two seeds Z. (See...) Figure 25 , the 5 cm spacing is controlled and realized by the included angle α of the pits on the seed metering disc A8. When the first seed metering disc 1A8 and the second seed metering disc 2A8 rotate together, adjacent 4 seeds present a "parallelogram" shape, and the "parallelogram" formed by 4 seeds is called one hill, that is, "4 seeds per hill", see Figure 25 , similarly, when the third seed metering disc 3A8 and the fourth seed metering disc 4A8 rotate together, adjacent 4 seeds also form "4 seeds per hill"; the first seed metering disc 1A8 and the second seed metering disc 2A8 are collectively referred to as the left seed metering disc assembly, and the third seed metering disc 3A8 and the fourth seed metering disc 4A8 are collectively referred to as the right seed metering disc assembly. During assembly, the left seed metering disc assembly (first seed metering disc 1A8 + second seed metering disc 2A8) and the right seed metering disc assembly (third seed metering disc 3A8 + fourth seed metering disc 4A8) are staggered by an angle of β / 2 along the rotation direction; this design enables seeds falling into the seed furrow to form a "pin-shaped (triangular)" distribution, see Figure 23 , so far, the four seed metering discs A8 in a single seeding unit A jointly realize the "equidistant pin-shaped (triangular) distribution of 4 seeds per hill" of seeds Z. The circumferential outer surface of the seed metering disc A8 is provided with six groups of pits A8-1, the front-rear spacing between seeds falling into the seed furrow from two adjacent groups of pits A8-1 is "hill spacing", and the hill spacing is controlled by the hill spacing angle β.

[0077] The four zero-speed seed dropping discs A7 in the above step four and the four seed metering discs A8 thereon are directly opposite to each other one by one in the up-down direction, that is, the spacing between the two zero-speed seed dropping discs A7 in each double-disc seeding opener A6 is 5 cm, see Figure 6 , in step five, each double-disc seeding opener A6 is provided with two press wheels A6-15, the two press wheels A6-15 are directly opposite to the two zero-speed seed dropping discs A7 in front thereof one by one in the front-rear direction, that is, the spacing between the two press wheels A6-15 in each double-disc seeding opener A6 is 5 cm, see Figure 6 .

[0078] the circumferential outer surface of each press wheel A6-15 is provided with a press wheel width center line P-P along the width direction, see Figure 9 , the spacing between two press wheels A6-15 refers to the spacing between the press wheel width center lines P-P on the two press wheels A6-15 in one double-disc seeding opener A6, see Figure 9 .

[0079] the circumferential outer surface of each zero-speed seed dropping disc A7 is provided with a seed dropping hole center line M-M along the width direction, see Figure 26 , the spacing between two zero-speed seed dropping discs A7 refers to the spacing between the seed dropping hole center lines M-M on the two zero-speed seed dropping discs A7 in one double-disc seeding opener A6, see Figure 26 and Figure 27 ; the zero-speed seed dropping disc A7 has a plurality of identical seed shifting teeth A7-3 uniformly distributed on a circumference with a certain diameter, see Figure 26 The groove A7-2 formed by two adjacent seed-feeding teeth A7-3 facilitates the reception of seeds introduced by the seed metering disc A8. The seeds in the groove A7-2 are rotated to the bottom and released at a speed that matches the speed of the locomotive. At this time, the velocity direction of seed Z is exactly opposite to the direction of locomotive movement, and the velocity is equal to that of seed Z, canceling out to zero. This achieves zero-speed seeding and solves the problem of uneven sowing caused by seed Z colliding with soil clods due to inertial velocity.

[0080] Each seed metering tray A8 has a recessed centerline SS along the width direction of the seed cleaning groove A8-4 on its outer circumference. Figure 15 The spacing between the two zero-speed seeding discs A7 refers to the distance between the center lines SS of the indentations on the two zero-speed seeding discs A7 that correspond one-to-one with the two zero-speed seeding discs A7 below. See Figure 6 .

[0081] This planter has been used to grow soybeans in Yian County, Heilongjiang Province for nearly two years. For example, in 2024, it was used to plant soybeans on 82.5 mu (approximately 5.8 hectares) of land.

[0082] A total of 4 varieties were tested, and the yield of each variety was over 600 jin / mu. In 2025, 223.5 mu of soybeans were planted, with a total of 16 soybean varieties. The yield of each variety was over 600 jin / mu, and the highest yield reached 667 jin / mu.

Claims

1. A soybean hill-type matrix planter, characterized in that: The seeder includes a main beam frame (1), a fertilizer box (2), a fertilizer furrow opener (3), a rubber fertilizer conveying pipe (4), a fertilizer wheel (5), a single seeder (A), and a seeding wheel mechanism (6). The fertilizer box (2) is set above the main beam frame (1), the fertilizer ditch opener (3) is set below the main beam frame (1), one end of the rubber fertilizer pipe (4) is connected to the fertilizer discharge device (2-1) at the bottom of the fertilizer box (2), and the other end of the rubber fertilizer pipe (4) is located between the double discs on the fertilizer ditch opener (3). Fertilizer wheels (5) are installed on both sides of the front end of the main beam frame (1). Multiple seeders (A) are arranged side by side behind the main beam frame (1). Two seeding wheel mechanisms (6) are symmetrically arranged on both sides of the multiple seeders (A). The front end of the seeding wheel mechanism (6) is connected to the main beam frame (1). Its features include: each seeder (A) comprises a single frame (A2), a connecting seat (A3), a pre-sowing compaction depth limiting wheel (A4), two sets of seeder four-bar linkage mechanisms (A1), two support plates (A5), two sets of double-disc seeders and furrow openers (A6), two seed boxes (A9), two sets of soil-covering compaction wheels (A10), four zero-speed seeding discs (A7), and four seed metering discs (A8); the two sets of seeder four-bar linkage mechanisms (A1) are arranged side by side at the front end of the single frame (A2), the front end of the seeder four-bar linkage mechanism (A1) is hinged to the connecting seat (A3), the rear end of the seeder four-bar linkage mechanism (A1) is hinged to the vertical beam (A2-1) on the single frame (A2), the pre-sowing compaction depth limiting wheel (A4) is located below the seeder four-bar linkage mechanism (A1), and the pre-sowing compaction depth limiting wheel... The deep-seeding wheel (A4) is connected to the single frame (A2) via the support plate (A5). Two sets of double-disc seeders (A6) are arranged side by side behind the pre-sowing compaction depth-limiting wheel (A4). Each double-disc seeder (A6) contains two parallel zero-speed seeding discs (A7). Above the two zero-speed seeding discs (A7) are two seed metering discs (A8), and the two seed metering discs (A8) correspond one-to-one with the two zero-speed seeding discs (A7). The two seed metering discs (A8) are staggered along the rotation direction. Above the two seed metering discs (A8) is a seed box (A9). Two sets of soil-covering compaction wheels (A10) are arranged side by side behind the double-disc seeder (A6), and the two sets of soil-covering compaction wheels (A10) correspond one-to-one with the two sets of double-disc seeders (A6).

2. The soybean hill-type matrix planter according to claim 1, characterized in that: Each set of double-disc seeder and furrow opener (A6) includes a front fixed plate (A6-2), a cover (A6-3), a U-shaped plate (A6-11), an arc-shaped retaining plate (A6-13), a seed pressing wheel axle (A6-14), a seed pressing wheel scraper (A6-17), two retaining plates (A6-1), two inner plates (A6-6), two furrowing discs (A6-7), two disc bearing seats (A6-8), two nut columns (A6-9), two vertical plates (A6-10), two furrowing scraper (A6-12), two seed pressing wheels (A6-15), and two seed pressing wheel bearing seats (A6-16). The two retaining plates (A6-1) are arranged in parallel. Plate (A6-2) is fixed to the front end of retaining plate (A6-1), and cover (A6-3) is fixed to the rear end of retaining plate (A6-1). The front plate (A6-3-1) on cover (A6-3) divides the cavity between the two retaining plates (A6-1) into a seed tray installation cavity (A6-4) and a seed pressing wheel installation cavity (A6-5). Two inner plates (A6-6) are symmetrically tapered relative to the longitudinal center line (NN) of the furrow opener at the front end of the front fixed plate (A6-2), and the cone angle of the two inner plates (A6-6) is the rear cone angle (θ). Two furrowing discs (A6-7) are symmetrically tapered relative to the longitudinal center line (NN) of the furrow opener on the two inner plates (A6-6). On the outer side, the two trenching discs (A6-7) have a front cone angle (δ), which is equal to the rear cone angle (θ). A disc bearing seat (A6-8) is located at the center of each trenching disc (A6-7). The disc bearing seat (A6-8) is fixed to a threaded shaft, which passes through the trenching disc (A6-7) and is threadedly connected to a threaded hole on a nut post (A6-9). The nut post (A6-9) is fixed to the inner plate (A6-6). Two vertical plates (A6-10) are symmetrically positioned above the trenching discs (A6-7) relative to the longitudinal centerline (NN) of the trencher. A U-shaped plate (A6-11) is positioned in front of the vertical plates (A6-10) and parallels the vertical plates (A6-7). 6-10) Fixed connection: Two trenching scraper blades (A6-12) are symmetrically arranged on both sides of the U-shaped plate (A6-11), and an arc-shaped retaining plate (A6-13) is arranged above the two trenching discs (A6-7). Two seed pressing wheels (A6-15) are arranged parallel to each other in the seed pressing wheel mounting cavity (A6-5) and fitted on the seed pressing wheel shaft (A6-14). Seed pressing wheel bearing seats (A6-16) are installed at both ends of the seed pressing wheel shaft (A6-14) and outside the retaining plate (A6-1). The seed pressing wheel bearing seats (A6-16) are fixedly connected to the retaining plate (A6-1). The seed pressing wheel scraper blade (A6-17) is installed behind the two seed pressing wheels (A6-15).

3. A soybean hill-type matrix planter according to claim 1 or 2, characterized in that: The seed metering disc (A8) has six sets of pits (A8-1) evenly distributed on its outer circumferential surface. The circumferential angle between each pair of adjacent sets of pits (A8-1) is the hole spacing angle (β). There are two pits in each set (A8-1), and the circumferential angle between the two pits (A8-1) is the pit included angle (α). In each set of pits (A8-1), a short tooth (A8-2) is provided behind the front pit (A8-1) in a clockwise direction. In each set of pits (A8-1), a long tooth (A8-3) is provided behind the rear pit (A8-1) in a clockwise direction. A seed cleaning groove (A8-4) is provided on the outer circumferential surface of the seed metering disc (A8) along the center line of the width direction of the pits (A8-1). The center of the seed metering disc (A8) has a hexagonal hole (A8-5), and a hexagonal seed metering shaft (A8-6) is installed in the hexagonal hole (A8-5).

4. A soybean hill-type matrix planter according to claim 3, characterized in that: The acupoint angle (β) is 50°, and the pit angle (α) is 10°.

5. A soybean hill-type matrix planter according to claim 3, characterized in that: The distance between the two seed pressing wheels (A6-15) is 5cm, the distance between the two zero-speed seed feeding discs (A7) is 5cm, and the distance between the two seed metering discs (A8) is 5cm.

6. A soybean hill-type matrix planter according to claim 1, characterized in that: The two seeding discs (A8) are set at a 5° angle offset along the direction of rotation.

7. A soybean hill-type matrix planter according to claim 5 or 6, characterized in that: The sowing wheel mechanism (6) includes a front support beam (6-1), a rear support beam (6-2), a four-bar linkage mechanism (6-3), a front support plate (6-4), a rear support plate (6-5), a front drive shaft (6-6), a wheel shaft (6-7), a small sprocket (6-8), a large sprocket (6-9), a sowing wheel chain (6-10), a sowing wheel (6-11), a 90° steering telescopic drive shaft (6-12), and a bulldozer blade. The front end of the four-bar linkage mechanism (6-3) of the sowing wheel is hinged to the front beam (6-1) of the support frame, and the rear end of the four-bar linkage mechanism (6-3) of the sowing wheel is hinged to the rear beam (6-2) of the support frame. The front support plate (6-4) is fitted onto the rear beam (6-2) of the support frame and fixedly connected to the rear beam (6-2). The two side plates (6-14) are symmetrically arranged on both sides of the front support plate (6-4) and are fixedly connected to the front support plate (6-13). -4) Fixed connection: The rear support plate (6-5) is located at the rear end between the two side plates (6-14) and fixedly connected to the two side plates (6-14). The front drive shaft (6-6) is mounted on the front end of the two side plates (6-14) via bearings. The ground wheel shaft (6-7) is mounted on the rear end of the two side plates (6-14) via bearings. The small sprocket (6-8) is fixedly mounted on the front drive shaft (6-6), and the large sprocket (6-9) is fixedly mounted on the ground wheel shaft (6-7). On the seeding wheel chain (6-10), both ends are connected to the small sprocket (6-8) and the large sprocket (6-9) respectively. The seeding wheel (6-11) is located between the two side plates (6-14) and is installed on the wheel shaft (6-7). The input end of the 90° steering telescopic drive shaft (6-12) is connected to the front drive shaft (6-6). The bulldozer blade (6-13) is connected to the rear beam of the support (6-2) through the connecting rod (6-13-1) on it.

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