Triangular final singling, interplanting and close planting method for wheat and corn and seeder

Abstract

The invention discloses a wheat and corn triangular final singling interplanting close planting method and a seeder, the seeder comprises a traction frame, land wheels and seeding monomers, the seeding monomers perform small double-row triangular final singling mode seeding during seeding, at least two seeding monomers are arranged on the traction frame side by side through a four-bar linkage, the land wheels are connected with the traction frame through a connecting frame, and the land wheels are connected with the traction frame through a connecting frame. The land wheel is linked with a transmission through a transmission mechanism, the transmission drives the seeding monomers to synchronously rotate through a driving mechanism to realize seeding operation, and the distance between the seeding monomers is matched with a corn interplanting area reserved during wheat planting and seeding; the wheat and corn interplanting method is improved on the basis of existing wheat and corn interplanting, corn sowing is conducted in the reserved corn interplanting area in a small double-row triangular final singling sowing mode, the wheat and corn interplanting mode is optimized, the corn sowing density is increased, the interplanting land utilization rate is increased, and the yield is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of agriculture, and particularly relates to a method for triangular fixed-seedling and close-planting interplanting of wheat and corn and a seeding machine. Background Art

[0002] The existing interplanting cultivation method of wheat and corn adopts the mode of interplanting corn before wheat harvest, which can further advance sowing and increase the growth period of corn, and its advantages are very obvious.

[0003] However, the existing interplanting mode adopts single-row interplanting of corn, and the wheat and corn interplanting mode is relatively casual. Especially, the control between the interplanting spacing and the sowing row spacing cannot realize the reasonable utilization of land, resulting in a certain waste of land.

[0004] The corn small double-row triangular fixed-seedling sowing mode is based on the large row spacing of corn. Through two seed metering devices arranged side by side, the small double-row sowing of corn is realized. At the same time, the seeds discharged by the seed metering devices fall on the ground in a staggered manner. Therefore, the seeds between the two rows form an isosceles triangle arrangement, while ensuring that the row spacing between corns remains unchanged without affecting light and ventilation, thereby increasing the planting density and improving the yield. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: the problem of low land utilization rate of the existing interplanting mode.

[0006] To solve the above technical problem, a technical solution provided by the present invention is: a method for triangular fixed-seedling and close-planting interplanting of wheat and corn, characterized in that: corn interplanting sowing is carried out in the corn interplanting area reserved during wheat planting sowing, and the corn sowing is carried out by using the small double-row triangular fixed-seedling sowing mode.

[0007] Further, a corn drip irrigation belt is laid in the middle of the small double rows of corn.

[0008] Further, the width of the corn interplanting area is 52 cm, and the row spacing of the small double rows of corn is 20 - 30 cm.

[0009] Further, the sowing width of wheat planting is 52 cm.

[0010] Further, when sowing wheat, an eight-row sowing mode is adopted for sowing, and the row spacings are 7 cm, 8.5 cm, 7 cm, 7 cm, 7 cm, 8.5 cm, 7 cm respectively, and a wheat drip irrigation belt is laid within the 8.5 cm row spacing.

[0011] To solve the above technical problems, a technical solution provided by the present invention is: A wheat and corn triangular seedling-thinning and intercropping dense planting seeder for implementing the above-mentioned planting method, including a towing frame, ground wheels, and seeding units. When seeding, the seeding units perform small double-row triangular seedling-thinning mode seeding. The characteristics are: At least two of the seeding units are arranged side by side on the towing frame through a four-bar linkage. The ground wheels are connected to the towing frame through a connecting frame. The ground wheels are linked to a transmission through a transmission mechanism. The transmission drives the seeding units to rotate synchronously through a driving mechanism to achieve the seed metering operation. The distance between the seeding units matches the reserved corn intercropping area during wheat seeding.

[0012] Further, at least two of the ground wheels are arranged in front of the seeding units. The transmission is arranged on the connecting frame, and the output shafts between the transmissions are coaxially connected.

[0013] Further, a weeder on the same axis as the seeding unit is arranged in front of the seeding unit. Two dividing plates are arranged on both sides of the seeding unit. The end of the dividing plate at the weeder is connected inwardly or not connected inwardly in an inclined manner. The dividing plates at the seeding unit extend backward to the soil covering and pressing wheels. The two dividing plates surround the seeding unit and the weeder.

[0014] Further, the seeding unit includes a unit frame and a seed metering device, a seeding furrow opener, a disc furrow opener, a chain box type seed guide, and a soil covering and pressing wheel arranged on the unit frame. The two seed metering devices are arranged side by side and coaxially connected and linked to the driving mechanism. The seeds discharged are misaligned and dropped into the disc furrow opener through the chain box type seed guide. Connecting holes for adjusting the distance between the two seed metering devices are arranged on the unit frame. The seeding furrow opener, the disc furrow opener, the soil covering device, and the soil covering and pressing wheel are coaxially corresponding front and back. Two dividing plates are arranged in front of the two seeding furrow openers.

[0015] Further, a drip irrigation tape placement rack and a drip irrigation guide rack are arranged on the unit frame. The drip irrigation guide rack is located between the disc furrow opener and the soil covering and pressing wheel.

[0016] The beneficial effects of the present invention are: 1. This application improves on the basis of the existing wheat and corn intercropping. Corn is sown in the reserved corn intercropping area using a small double-row triangular seedling-thinning seeding mode, optimizing the intercropping mode of wheat and corn, increasing the seeding density of corn, improving the land utilization rate of intercropping, and increasing the yield.

[0017] 2. This application uses an eight-row seeding mode for wheat seeding, improving the row spacing and seeding mode of wheat, further optimizing the intercropping mode of wheat and corn, and further improving the land utilization rate.

[0018] 3. In this application, the transmission and the ground wheel are connected as a whole through a connecting frame, and are arranged in front of the seeding unit and on the same axis as the seeding unit, reducing the impact on wheat. The power of the ground wheel is directly transmitted to the input shaft of the transmission through a transmission mechanism, and then the output shaft of the transmission drives the seed metering device uniformly through a driving mechanism. One transmission can complete the speed change adjustment, which is convenient to operate, reduces costs, and the integrated design also saves the internal space of the seeder and reduces the interference with other equipment during maintenance. The input shafts of the two transmissions are connected by a common shaft, and the output shafts are connected by a common shaft. When the ground is uneven and one ground wheel does not contact the ground and rotate, it can still drive the seed metering device under the drive of the other ground wheel.

[0019] 4. In this application, the weeder is arranged in front of the seeding unit and on the same axis as the seeding unit. During the seeding process, the weeder can shovel and / or remove the weeds in front of the seeding unit from the soil, facilitating the seeding unit to carry out seeding.

[0020] 5. In this application, the seeding furrow opener and the disc furrow opener are arranged corresponding to each other front and back. First, the seeding furrow opener opens the furrow in the seeding area and clears the sundries in the seeding area, facilitating the disc furrow opener to open the furrow and sow seeds in the furrow opened by the seeding furrow opener while preventing the sundries from affecting the disc furrow opener. The height of the seed metering device is increased through a chain box type seed guide, so that the seed metering device is above the wheat, improving the passability. Moreover, the chain box type seed guide replaces the seed tube, improving the seed metering stability and solving the problem that when the height of the seed metering device increases, the seeds collide and fall in the seed tube, resulting in the unfixed sowing position and affecting the quality of triangular fixed seedling sowing.

[0021] 6. In this application, two dividing plates are respectively arranged on both sides of the seeding unit, and the end of the dividing plate at the weeder is connected inwardly inclined or not connected inwardly inclined. The dividing plate at the seeding unit extends backward to the soil covering and pressing wheel. The two dividing plates surround the seeding unit and the weeder. The end of the dividing plate is inclined inwardly as a whole to form an arrow shape, which can divide and guide the wheat invading into the weeder and the seeding unit, making the wheat leave the interplanting area and reducing the impact on seeding.

[0022] 7. In this application, a drip irrigation tape placement rack is arranged on the monomer frame, and the drip irrigation tape is laid on the ground through a drip irrigation tape guide rack, and the drip irrigation tape is between two rows of corn, realizing the integrated operation of seeding and drip irrigation tape laying, facilitating the watering and fertilizing operation through the drip irrigation tape and ensuring the growth of corn.

[0023] In order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given, and detailed descriptions are made in conjunction with the accompanying drawings as follows. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only eight of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 Structural schematic of the seeder of the present application Figure 1 。

[0026] Figure 2 Structural schematic of the seeder of the present application Figure 2 。

[0027] Figure 3 Structural schematic of the seeder of the present application Figure 3 。

[0028] Figure 4 Structural schematic of the seeding unit Figure 1 。

[0029] Figure 5 Structural schematic of the seeding unit Figure 2 。

[0030] Figure 6 Structural schematic diagram of the dividing board.

[0031] Figure 7 Planting schematic diagram of the method of the present application.

[0032] Figure 8 For Figure 4 Top view.

[0033] In the figure, 1 - towing frame, 2 - ground wheel, 3 - seeding unit, 4 - four-bar linkage, 5 - connecting frame, 6 - transmission, 7 - drip irrigation tape placement rack, 8 - drip irrigation guide wheel, 9 - transmission mechanism, 10 - drive mechanism, 11 - weeder; 31 - seed metering device, 32 - seeding furrow opener, 33 - soil covering and pressing wheel, 34 - disc furrow opener, 35 - monomer frame, 36 - chain box type seed guide, 37 - connecting hole, 38 - dividing board; 111 - weeding board, 112 - connecting plate, 113 - flying wing, 114 - weeding fixing block; 321 - furrow opening fixing block, 322 - arc plate, 323 - arc connecting plate. Specific embodiments

[0034] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for illustrative purposes and are not used to limit the protection scope of the present invention.

[0035] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only for illustrative purposes and are not used to limit the scope of these messages or information. Embodiment 1

[0037] As Figures 1-2 shown, a wheat and corn triangular fixed-seedling and interplanting dense planting seeder includes a towing frame 1, ground wheels 2, and seeding units 3. When seeding, the seeding units 3 perform small double-row triangular fixed-seedling mode seeding. At least two seeding units 3 are arranged side by side on the towing frame 1 through a four-bar linkage 4. The ground wheels 2 are connected to the towing frame 1 through a connecting frame 5. The ground wheels 2 are linked to a transmission 6 through a transmission mechanism 9. The transmission 6 drives the seeding units 3 to rotate synchronously through a driving mechanism 10 to achieve the seed metering operation. The distance between the seeding units 3 matches the reserved corn interplanting area during wheat seeding; by using the small double-row triangular fixed-seedling seeding of corn, the corn planting density in the interplanting area is increased, and the plant spacing is not changed, the light and ventilation are not affected, and the yield is improved; by adjusting the movement of the seeding units 3 on the towing frame 1, the distance between the seeding units 3 can be adjusted to match the reserved corn interplanting area during wheat seeding.

[0038] Of course, the distance between the seeding units can also be adjusted. According to the width of the reserved interplanting area and the corn seeding requirements, two seeding units can be located in the same interplanting area. In the same interplanting area, large double-row seeding is carried out simultaneously by two seeding units, and each large double-row uses small double-row staggered seeding. At the same time, the corn seeds in the adjacent two small rows of the two large double-rows are also staggered on the ground, realizing the rational utilization of the space in the interplanting area.

[0039] Among them, a drip irrigation tape placement rack 7 and a drip irrigation guide rack 8 are provided on the monomer frame 35; the drip irrigation tape is laid on the ground through the drip irrigation tape guide rack, and the drip irrigation tape is located between two rows of corn, realizing the integrated operation of sowing and drip irrigation tape laying, facilitating watering and fertilizing operations through the drip irrigation tape, and ensuring the growth of corn. Embodiment 2

[0040] As Figure 1 and 2 shown, this embodiment is obtained by changing the connection method of technical features such as the ground wheel 2 and the connecting frame 5 on the basis of Embodiment 1. The remaining technical features are the same as those in Embodiment 1, and the same parts will not be elaborated here. Among them, the differences between this embodiment and Embodiment 1 are as follows: at least two ground wheels 2 are arranged in front of the sowing monomer 3, the transmission 6 is arranged on the connecting frame 5, a connecting hole 37 for adjusting the distance between two seed meters 31 is provided on the monomer frame 35, and the output shafts between the transmissions 6 are coaxially connected; the transmission mechanism 9 and the driving mechanism 10 are chains or transmission shafts.

[0041] In this embodiment, the transmission 6 and the ground wheel 2 are connected as a whole through the connecting frame 5, and are arranged in front of the sowing monomer 3 and on the same axis as the sowing monomer 3, reducing the impact on wheat. The power of the ground wheel 2 is directly transmitted to the input shaft of the transmission 6 through the transmission mechanism 9, and then the output shaft of the transmission 6 drives the seed meter 31 uniformly through the driving mechanism 10. One transmission 6 can complete the speed change adjustment, which is convenient to operate and reduces the cost. The integrated design also saves the internal space of the seeder and reduces the interference with other equipment during maintenance; the input shafts of the two transmissions 6 are coaxially connected, and the output shafts are coaxially connected. When one ground wheel 2 does not contact the ground and rotate due to uneven ground, the seed meter 31 can still be driven under the drive of the other ground wheel 2; the distance between the two seed meters 31 is adjusted by installing them through different connecting holes 37 on the monomer frame 35, so as to adjust the small row spacing to match the size of the corn relay cropping area reserved during wheat planting and sowing. Embodiment 3

[0042] As Figure 3 shown, this embodiment is obtained by adding technical features such as a weeder 11 on the basis of Embodiment 1. The remaining technical features are the same as those in Embodiment 1, and the same parts will not be elaborated here. Among them, the differences between this embodiment and Embodiment 1 are as follows: a weeder 11 on the same axis as the sowing monomer 3 is arranged in front of the sowing monomer 3.

[0043] In this embodiment, the weeder 11 includes a weeding plate 111 and a connecting plate 112. A wing 113 which is in a horizontal state and slopes from front to back is arranged at the bottom of the weeding plate 111, making the whole in an L shape. The two weeding plates 111 are arranged side by side on the towing frame 1 through the connecting plate 112, and the wings 113 of the two weeding plates 111 face each other. The weeder 11 is arranged in front of the seeding unit 3 and on the same axis as the seeding unit 3. During the seeding process, the weeding plate 111 drives the wing 113 to extend into the soil layer. The horizontally arranged wing 113 can shovel out the weeds in front of the seeding unit 3 from the soil, facilitating the seeding unit 3 to carry out seeding.

[0044] Wherein, a weeding fixing block 114 is arranged on the towing frame 1. The connecting plate 112 extends into a through hole arranged on the weeding fixing block 114. Then, a fixing bolt penetrates through the weeding fixing block 114 and extends into the through hole and abuts against the connecting plate 112, fixing the connecting plate 112 in the weeding fixing block 114. The fixing structure formed by the weeding fixing block 114 and the fixing bolt can adjust the soil penetration depth of the weeding plate 111 and the wing 113 and is convenient for replacement. Embodiment Four

[0045] As Figure 3 shown, this embodiment is obtained by describing in detail technical features such as the seeding unit 3 on the basis of Embodiment One. The remaining technical features are the same as those in Embodiment One, and the same parts will not be described in detail here. The difference between this embodiment and Embodiment One lies in that: the seeding unit 3 includes a unit frame 35 and a seed metering device 31, a seeding furrow opener 32, a disc furrow opener 34, a chain box type seed guide 36 and a soil covering and pressing wheel 33 arranged on the unit frame 35. The two seed metering devices 31 are connected coaxially side by side and are linked with the driving mechanism 10, and the discharged seeds are misaligned and dropped into the disc furrow opener 34 through the chain box type seed guide 36. The seeding furrow opener 32, the disc furrow opener 34, the soil covering device and the soil covering and pressing wheel 33 are coaxially corresponding front and back; a dividing board 38 is arranged in front of the two seeding furrow openers 32; the drip irrigation guide frame 8 is located between the disc furrow opener 34 and the soil covering and pressing wheel 33.

[0046] In this embodiment, the seeding furrow opener 32 and the disc furrow opener 34 correspond to each other front and back. First, the seeding furrow opener 32 opens a furrow in the seeding area and clears the sundries in the seeding area, facilitating the disc furrow opener 34 to open a furrow and sow seeds in the furrow opened by the seeding furrow opener 32 while preventing the sundries from affecting the disc furrow opener 34. The height of the seed metering device 31 is increased through the chain box type seed guide 36, making the seed metering device 31 above the wheat, improving the passability. Moreover, the chain box type seed guide 36 replaces the seed discharging pipe, improving the seed metering stability and solving the problem that when the height of the seed metering device 31 increases, the seeds collide and drop in the seed discharging pipe, resulting in the non-fixed seeding position and affecting the quality of triangular fixed-seedling seeding. Two dividing plates are arranged on both sides of the seeding unit, and the end of the dividing plate at the weeder is connected inwardly inclined or not connected inwardly inclined. The dividing plate at the seeding unit extends backward to the soil covering and pressing wheel, and the two dividing plates surround the seeding unit and the weeder.

[0047] Two dividing plates 38 are respectively arranged on both sides of the seeding unit 3, specifically fixed on both sides of the unit frame 35. The two dividing plates 38 surround the seeding unit 3 and the weeder 11, and the end of the dividing plate 38 at the weeder 11 is inclined inward, so that the two dividing plates 38 form an arrow shape as a whole. The dividing plate 38 at the seeding unit 3 extends backward to the soil covering and pressing wheel 37, which can deflect and guide the wheat invading into the weeder 11 and the seeding unit 3, so that the wheat leaves the interplanting area and reduces the influence of wheat on seeding.

[0048] There is a distance between the inwardly inclined ends of the two dividing plates 38 without connection, which is convenient for the dividing plates 38 to move and adjust together when adjusting the distance between the two seeding units 3 through the connection holes 37, so that the width of the dividing plates 38 matches the small double-row seeding width.

[0049] The inwardly inclined ends of the two dividing plates 38 are connected together, which is convenient for forming processing, such as using a steel plate or an elastic plastic plate formed by stamping and bending. And when adjusting the distance between the two seeding units 3, the elastic deformation of the steel plate or plastic plate can be used to make the width of the dividing plates 38 move and adjust together with it.

[0050] The dividing plate 38 can deflect and guide the invading wheat, so that the wheat leaves the interplanting area and reduces wheat loss.

[0051] Among them, the seeding furrow opener 32 includes a furrow opening fixing block 321, an arc plate 322 and an elastic arc connecting plate 323. The furrow opening fixing block 321 is fixed on the unit frame 35. One end of the arc connecting plate 323 extends into the through hole of the furrow opening fixing block 321 and is fixed on the furrow opening fixing block 321 through a fixing bolt, which is convenient for disassembly and replacement. The other end of the arc connecting plate 323 faces the weeder 11 from top to bottom, and the arc plate 322 is arranged at the other end of the arc connecting plate 323; when seeding, the arc plate 322 extends into the soil layer. Since the arc connecting plate 323 has elasticity, when encountering hard objects such as stones, it can elastically deform and use the elasticity to push small hard objects to shift, playing a buffering role.

[0052] The usage mode of the overall technical solution formed by the above embodiments is another technical solution disclosed in this application. This technical solution is: as Figures 4-5As shown in the figure, a method for triangular fixed-seedling and close-planting of wheat and corn by interplanting. When sowing wheat, corn is interplanted in the reserved corn interplanting area. The corn is sown using a small double-row triangular fixed-seedling sowing mode, and a corn drip irrigation belt is laid in the middle of the small double-rows of corn. When using the above sowing machine for interplanting, the positions of the sowing unit 3 and the ground wheel 2 are coordinated with the corn interplanting area. The power of the ground wheel 2 is directly transmitted to the input shaft of the transmission 6 through the transmission mechanism 9, and then the output shaft of the transmission 6 uniformly drives the seed metering device 31 to perform seed metering operations through the driving mechanism 10. The seeds discharged by the seed metering device 31 are guided by the chain box type seed guide 36, and then the seeds are dropped on the land between the disk furrow openers 34 with front-back dislocation, forming a small double-row triangular fixed-seedling sowing. The drip irrigation belt is laid on the ground through the drip irrigation belt guide frame, and the drip irrigation belt is located between the two rows of corn. The drip irrigation guide frame 8 is arranged between the two disk furrow openers 34, and the soil pushed out when the disk furrow openers 34 open the furrow and divide the soil is used to bury the drip irrigation, realizing the integrated operation of sowing and drip irrigation belt laying. During the sowing process, the weeding board 111 drives the flying wing 113 to extend into the soil layer. The flying wing 113 in the horizontal state can shovel the weeds in front of the sowing unit 3 out of the soil. When the grass roots are deeper, the flying wing 113 can shovel off the grass when passing through the middle of the grass roots and shovel out the upper part of the grass from the soil. The flying wing 113 is inclined from front to back, which is convenient for the flying wing to move in the soil layer and reduces the moving resistance.

[0053] Among them, the width of the corn interplanting area is 52 cm, the row spacing of the small double-rows of corn is 20 - 30 cm, preferably 28 cm. By adjusting the positions between the sowing units 3, it can adapt to different widths of the corn interplanting area, and by adjusting the distances between the seed metering devices 31, it can adapt to different small row spacings for sowing, so as to adjust the corn interplanting mode according to the reserved corn interplanting area during wheat sowing.

[0054] Among them, the sowing width of wheat is 52 cm. When sowing wheat, an eight-row sowing mode is adopted, and the row spacings are 7 cm, 8.5 cm, 7 cm, 7 cm, 7 cm, 8.5 cm, 7 cm respectively, and a wheat drip irrigation belt is laid within the 8.5 cm row spacing. In order to optimize and improve the sowing method of wheat, further promote the rational utilization of the overall land, reduce the unreasonable utilization of the land caused by the unreasonable sowing of wheat, thereby increasing the area of the corn interplanting area and improving the overall yield.

[0055] Note that the above is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for planting wheat and corn in a triangular manner, characterized in that: Corn interplanting is carried out in the corn interplanting area reserved during wheat planting. Corn sowing is carried out in a small double-row triangular seedling sowing mode.

2. A method for planting wheat and corn in a triangular manner according to claim 1, characterized in that: A corn drip irrigation belt is laid between the small double rows of corn.

3. A method for planting wheat and corn in a triangular manner according to claim 2, characterized in that: The width of the corn interplanting area is 52 cm, and the spacing between the small double rows of corn is 20-30 cm.

4. A method for planting wheat and corn in a triangular manner according to claim 3, characterized in that: The wheat planting sowing width is 52 cm.

5. The method for planting wheat and corn in a triangular manner according to claim 4, characterized in that: The wheat is sown in an eight-row sowing mode, and the row spacings are 7 cm, 8.5 cm, 7 cm, 7 cm, 7 cm, 8.5 cm, and 7 cm, respectively, and a wheat drip irrigation tape is laid within the row spacing of 8.5 cm.

6. A wheat and corn triangular seedling interplanting dense planting seeder for implementing the planting method according to any one of claims 1 to 5, comprising a traction frame, a ground wheel and a sowing unit, wherein the sowing unit performs small double-row triangular seedling mode sowing during sowing, characterized in that: At least two of the sowing units are arranged side by side on the traction frame through a four-linkage, the ground wheel is connected to the traction frame through a connecting frame, the ground wheel is linked to the transmission through a transmission mechanism, and the transmission drives the sowing units to rotate synchronously through a driving mechanism to realize seeding operation, and the distance between the sowing units matches the corn interseeding area reserved for wheat planting.

7. The wheat and corn triangular seedling interplanting dense planting seeder according to claim 6 is characterized by: At least two of the ground wheels are arranged in front of the sowing unit, the transmission is arranged on the connecting frame, and the output shafts of the transmissions are coaxially connected.

8. The wheat and corn triangular seedling interplanting dense planting seeder according to claim 6 is characterized by: A weeder is arranged in front of the sowing unit and is located on the same axis as the sowing unit. Two grass dividing plates are arranged on both sides of the sowing unit, and the ends of the grass dividing plates at the weeder are tilted inwardly and connected or tilted inwardly and not connected. The grass dividing plates at the sowing unit extend backward to the soil covering and pressing wheel. The two grass dividing plates surround the sowing unit and the weeder.

9. The wheat and corn triangular seedling interplanting dense planting seeder according to claim 8 is characterized by: The sowing unit includes a single body frame and a seed meter, a sowing furrow opener, a disc furrow opener, a chain box seed guide and a soil covering and pressing wheel arranged on the single body frame. The two seed meters are coaxially connected side by side and linked to the driving mechanism, and the discharged seeds are staggered and dropped into the disc furrow opener through the chain box seed guide. A connecting hole for adjusting the distance between the two seed meters is arranged on the single body frame, and the sowing furrow opener, the disc furrow opener, the soil covering device and the soil covering and pressing wheel correspond coaxially front and back.

10. The wheat and corn triangular seedling interplanting dense planting seeder according to claim 9, characterized in that: The single body frame is provided with a drip irrigation belt placement frame and a drip irrigation guide frame, and the drip irrigation guide frame is located between the disc furrow opener and the soil covering and pressing wheel.

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