Corn and soybean deep loosening fertilization deep furrow sowing strip compound seeder

Abstract

The present invention discloses a corn and soybean deep loosening and fertilizing deep furrow sowing belt composite seeder, comprising a traction device, a rotary tillage device, a chemical fertilizer application device, a bacterial fertilizer application device, a soybean sowing device, and a corn sowing device. The traction device comprises a frame, a first traction rod, a second traction rod, a power transmission gearbox, and a drive motor; the rotary tillage device comprises a rotary tillage shaft, a rotary tillage shaft bearing, a transmission shaft, a baffle, a rotary tillage blade, a cutting blade, and a blade holder; the chemical fertilizer application device comprises a chemical fertilizer box and a chemical fertilizer pipe; the bacterial fertilizer application device comprises a bacterial fertilizer box and a bacterial fertilizer feed pipe; the soybean sowing device comprises a soybean sowing device connector, a disc furrow opener, a boat-shaped seed protector, a soybean sowing device, a soybean seed box, and a pressing wheel; and the corn sowing device comprises a corn sowing device connector, a disc furrow opener, a boat-shaped seed protector, a corn sowing device, a corn seed box, and a pressing wheel. The row spacing between soybeans on both sides of the present invention is 30-35 cm, the row spacing between the two middle rows of corn is 45-50 cm, and the row spacing between corn and soybeans is 60 cm.

Description

Technical Field

[0001] The invention belongs to the technical field of corn and soybean intercropping, and in particular relates to a corn and soybean deep loosening, fertilizing, deep furrow sowing belt-shaped composite seeder. Background Art

[0002] Intercropping refers to the planting of different crops in strips on the same land, arranged in a fixed number of rows and with a specific width-to-narrow ratio. It is an agricultural production model developed to fully utilize space and resources, leveraging the spatial structure of agricultural communities. It rationally allocates crop populations, combining land use with land conservation, avoiding competition among various crops for land, improving land utilization, and improving ventilation and light transmission for crops, increasing the efficiency of light energy, and fully leveraging the yield-increasing benefits of side rows. It can also, to a certain extent, suppress pests and diseases, making it a measure for increasing production and efficiency in agriculture. Intercropping grasses with legumes is recognized as the optimal planting pattern. Intercropping corn with soybeans can meet my country's future grain and soybean needs, effectively resolving the conflict between grain and oil production, and ensuring national grain and oil security.

[0003] With the development of modern agriculture, the mechanization of seed drills for various crops has reached a high level. However, existing corn and soybean seed drills are independent and not integrated, let alone integrated with rotary tillers. Even some integrated corn and soybean seed drills are simple improvements to existing corn seed drills. Due to the different root types of corn and soybeans, different seeding depth requirements, different row and plant spacing, different seed fertilizers, and different intercropping methods, it is very necessary to develop a corn and soybean composite seed drill that can deep loosen, fertilize, deep-ditch, and sow in strips. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a corn and soybean deep loosening, fertilizing, deep furrow sowing and belt-shaped composite seeder, which can effectively solve the problems in the prior art.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention discloses a corn and soybean deep-loosening, fertilizing, deep-ditch sowing belt-shaped composite seeder, comprising a traction device, a rotary tillage device, a chemical fertilizer application device, a bacterial fertilizer application device, a soybean sowing device, and a corn sowing device. The sowing method of the present invention is a six-row sowing pattern, with two rows of corn in the middle and two rows of soybeans on each side.

[0007] The traction device comprises a frame, a first traction rod, a second traction rod, a power transmission box and a drive motor.

[0008] The rotary tillage device is located below the frame and includes a rotary tillage shaft, a rotary tillage shaft bearing, a transmission shaft, a baffle, a rotary tillage blade, a cutting blade, and a blade holder. The rotary tillage shaft is fixed to the bottom of the frame via the rotary tillage shaft bearing and the baffle, and the rotary tillage shaft is connected to the power transmission box via the transmission shaft. A number of blade holders are welded to the rotary tillage shaft in an orderly distributed manner, and a number of rotary tillage blades and cutting blades are provided on the blade holders. The rotary tillage blades are located directly in front of the planter's furrow opener, with the angle between the handle of the rotary tillage blade and the rotary tillage blade being 120 degrees. The cutting blades are located between the rotary tillage blades, with the angle between the handle of the cutting blade and the cutting blade being 90 degrees. The directions of the rotary tillage blades and the cutting blades are arranged alternately. The baffle is extended forward, backward, and downward to make the baffle as large as possible to reduce the splashing of the rotary tillage soil.

[0009] The fertilizer application device includes a fertilizer box and a fertilizer pipe. The fertilizer box is arranged above the frame, and the bottom of the fertilizer box is connected to the fertilizer pipe at the rear. The top of the fertilizer pipe is provided with a fertilizer discharge device, which consists of a transmission shaft, a sprocket and a fertilizer discharge piece. The sprocket is arranged on the transmission shaft, and the sprocket is connected to the sprocket of the drive motor via a chain. The fertilizer discharge piece is arranged on the transmission shaft that passes through the fertilizer pipe. The fertilizer pipe is made of metal material, the upper part of which is an elliptical straight pipe, the middle and lower parts are elliptical curved pipes, and the bottom is a plow-shaped head connected to the elliptical curved pipe. The fertilizer pipe is fixed on the frame, and the middle and lower parts are inserted between the rotary tillage blade and the cutting blade. The front and rear positions of the plow-shaped bottom of the fertilizer pipe are set directly below the rotary tillage shaft, and the left and right positions vary depending on whether corn or soybeans are sown. Fertilizer is applied on both sides of the fibrous root system of corn and below the taproot system of soybeans. Therefore, the plow-shaped bottom of the fertilizer pipe is set 80-90mm on both sides of the center of the corn furrow opener and on the center line of the soybean furrow opener. The bottom end of the plow-shaped bottom is 50-60mm deeper than the bottom end of the rotary tillage blade, which plays the role of deep loosening and fertilization.

[0010] The microbial fertilizer application device includes a microbial fertilizer tank and a microbial fertilizer discharge pipe. The microbial fertilizer tank is located above the frame and behind the chemical fertilizer application device. The bottom of the microbial fertilizer tank is connected to the microbial fertilizer discharge pipe. The top of the microbial fertilizer discharge pipe is equipped with a fertilizer discharge device. The fertilizer discharge device has the same structure as the chemical fertilizer application device, consisting of two drive shafts, two sprockets, and a fertilizer discharge plate. The two sprockets are located on the second drive shaft and connected to the sprocket of the drive motor via a second chain. The fertilizer discharge plate is located on the second drive shaft that passes through the microbial fertilizer discharge pipe. The microbial fertilizer discharge pipe is made of a plastic hose. The lower end of the microbial fertilizer discharge pipe is fixed to a boat-shaped seed protector behind the disc furrow opener and communicates with the lower end of the seed pipe.

[0011] The soybean sowing device is arranged on both sides of the compound seeder, with two sets on each side. The soybean sowing device includes a soybean sowing device connector, a disc furrow opener, a boat-shaped seed protector, a soybean seeder, a soybean seed box, and a pressing wheel. The soybean sowing device connector is in a side "T" shape, with the upper end of the connector fixed to the rear end of the frame and the lower end connected to the center of the shaft of the disc furrow opener. The soybean seed box is fixed on the middle cross section of the connector, and the soybean seeder is fixed below the middle cross section. The lower part of the middle of the middle cross section is hinged to the pressing wheel arm, and an adjusting screw is provided between the rear end of the middle cross section and the pressing wheel arm. The upper part of the adjusting screw is provided with a spring and a knob. A steering sprocket is provided above the hinge point in the middle of the middle cross section. The adjusting knob can adjust the height of the pressing wheel to adjust the pressing depth. The disc furrow opener is shaped like a figure eight, with a plow-shaped front end and an open rear end. A boat-shaped seed protector formed by two symmetrical vertical plates is connected to the rear of the disc furrow opener's axis. The lowest end of the disc furrow opener is 20 mm higher than the lowest end of the rotary blade. The soybean seeder is connected to the soybean seed box at the top and the seed tube at the bottom. The lower end of the seed tube extends into the inner side of the boat-shaped seed protector. The lower end of the pressure wheel arm is connected to the pressure wheel. A pressure sprocket is provided on one side of the pressure wheel. The pressure sprocket is connected to the sprocket of the soybean seeder via chain three, a steering sprocket, and chain four. The pressure wheel transmits power to the soybean seeder. The pressure wheel arm is equipped with a tensioning pulley for chain three. The soybean seeder uses a dual-seed seeder. The steering sprocket is a double sprocket in parallel.

[0012] The corn sowing device is located in the center two rows of the composite seeder and includes a corn sowing device connector, a disc furrow opener, a boat-shaped seed protector, a corn seeder, a corn seed box, and a pressure wheel. The corn sowing device connector consists of a fixed member, a sliding member, a screw, a connecting rod, and a handle. One side of the fixed member is fixed to the frame, and the other side has a longitudinal semicircular groove in the middle. A neck semicircular groove with a smaller diameter than the semicircular groove is located between the top of the fixed member and the semicircular groove. The sliding member is fork-shaped, with a semicircular threaded groove in the upper middle portion of one side of the fork-shaped handle corresponding to the semicircular groove of the fixed member. The semicircular threaded groove of the sliding member is fixed relative to the semicircular groove of the fixed member. The fork of the sliding member is divided into two prongs, one forking the corn seeder and the disc furrow opener. A support for the corn seed box is located on one side of the fork. The screw corresponds to the semicircular threaded groove of the sliding member and is connected to the handle via a connecting rod. When the handle is turned, the screw slides in place within the semicircular groove of the fixed component, causing the sliding component in the semicircular groove opposite the screw thread to move up and down, thereby driving the entire corn seeding device up and down to adjust the seeding depth. The lowest end of the disc furrow opener of the corn seeding device is flush with the lowest end of the rotary tiller. The corn seeding device adopts a single seeding mechanism.

[0013] The relative placement of the fertilizer, bacterial fertilizer, and seeds in the present invention is such that the bacterial fertilizer and seeds are placed in the same hole, the fertilizer hole for the soybean row is directly in front of the seed hole, and the fertilizer holes for the corn row are on both sides of the front of the seed hole. The spacing between the soybean rows on both sides is 30-35 cm, the spacing between the two middle rows of corn is 45-50 cm, and the spacing between the corn and soybean rows is 60 cm.

[0014] The beneficial effects of the present invention are as follows: (1) The present invention combines the three functions of rotary tillage, fertilization and sowing into one, and places the rotary tillage device and the fertilizer application device in front. Deep tillage is performed before sowing, and the fertilizer is applied 50-60 mm below the bottom of the rotary tillage blade, which plays the role of deep tillage and fertilization. (2) The sowing device of the present invention is closely connected to the rotary tillage and fertilization devices. The sowing depth of soybeans is adjusted by the traction device, and the sowing depth of corn is adjusted by the handle on the connecting piece fixed to the frame. The sowing depth of corn seeds is flush with the bottom end of the rotary tillage blade, which plays the role of deep furrow sowing of corn. The sowing depth of soybean seeds is 20 mm higher than the bottom end of the rotary tillage blade, and corn and soybeans are sown to different depths according to different needs. (3) Taking into account the difference between corn having a fibrous root system and soybeans having a taproot system, the present invention applies fertilizer on both sides of the corn with fibrous roots and directly below the soybeans with taproots. (4) The present invention combines corn and soybean strip sowing into one, with two rows of corn designed in the middle. The row spacing between corn and soybean is relatively wide, which is convenient for tractor operation during subsequent operations during the growing season. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a schematic structural diagram of the traction device and rotary tillage device of the present invention.

[0017] Figure 3 It is a top view of a fertilizer box of the present invention.

[0018] Figure 4 This is a schematic diagram of a corn sowing device according to the present invention.

[0019] Figure 5 It is the left view of the corn sowing device of the present invention.

[0020] Figure 6 This is a schematic diagram of the fixing parts of the corn sowing device of the present invention.

[0021] Figure 7 Schematic diagram of the sliding part of the corn sowing device of the present invention Figure 1 .

[0022] Figure 8 Schematic diagram of the sliding part of the corn sowing device of the present invention Figure 2 .

[0023] Figure 9Schematic diagram of the screw of the corn sowing device of the present invention.

[0024] Figure 10 This is a schematic diagram of the relative positions of the chemical fertilizer, bacterial fertilizer and seeds falling on the ground according to the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1 、 2As shown in Figure 3, the corn and soybean deep loosening and fertilizing deep furrow sowing belt composite seeder of the present invention includes a traction device, a rotary tillage device, a chemical fertilizer application device, a bacterial fertilizer application device, a soybean sowing device and a corn sowing device. The sowing method of the present invention is a six-row sowing pattern, with the two middle rows being corn and two rows of soybeans on each side. The traction device includes a frame 1, a traction rod 1 2, a traction rod 2 3, a power transmission gearbox 4, and a drive motor 5. The rotary tillage device is arranged below the frame 1, and includes a rotary tillage shaft 6, a rotary tillage shaft bearing 7, a transmission shaft 8, a baffle 9, a rotary tillage blade 10, a cutting blade 11, and a blade holder 12. The rotary tillage shaft 6 is fixed to the bottom of the frame 1 via the rotary tillage shaft bearing 7 and the baffle 9, and the rotary tillage shaft 6 is connected to the power transmission gearbox 4 via the transmission shaft 8. A number of blade holders 12 are welded in an orderly distributed manner on the rotary tillage shaft 6, and a number of rotary tillage blades 10 and cutting blades 11 are provided on the blade holder 12. The rotary tiller blades 10 are located directly in front of the planter's furrow opener. The angle between the handle 13 of the rotary tiller blades 10 and the rotary tiller blades 14 is 120 degrees. The cutting blades 11 are located between the rotary tillers 10. The angle between the handle 13 of the cutting blades 11 and the cutting blades 15 is 90 degrees. The rotary tiller blades 14 and cutting blades 15 are arranged in alternating directions. The baffle 9 is extended forward, backward, and downward to be as large as possible to reduce the splashing of soil during rotary tillage. The fertilizing device includes a fertilizer box 16 and a fertilizer pipe 17. The fertilizer box 16 is arranged above the frame 1. The bottom of the fertilizer box 16 is connected to the fertilizer pipe 17 at the rear. The top of the fertilizer pipe 17 is provided with a fertilizer discharge device, which consists of a drive shaft 18, a sprocket 19 and a fertilizer discharge piece 20. The sprocket 19 is provided on the drive shaft 18, and the sprocket 19 is connected to the sprocket of the drive motor 5 via a chain 21. The fertilizer discharge piece 20 is provided on the drive shaft 18 passing through the fertilizer pipe 17. The fertilizer pipe 17 is made of metal material, the upper part of which is an elliptical straight tube, the middle and lower parts are elliptical curved tubes, and the bottom is a plow-shaped head connected to the elliptical curved tube. The fertilizer pipe 17 is fixed on the frame 1, and the middle and lower parts are inserted between the rotary tillage blade 10 and the cutting blade 11. The front and rear positions of the plow-shaped bottom of the fertilizer pipe 17 are set directly below the rotary tillage shaft 6, and the left and right positions vary depending on whether corn or soybeans are sown. Fertilizer is applied on both sides of the fibrous root system of corn and below the taproot system of soybeans. Therefore, the plow-shaped bottom of the fertilizer pipe 17 is set at 80-90 mm on both sides of the center of the corn furrow opener and on the center line of the soybean furrow opener. The bottom end of the plow-shaped bottom is 50-60 mm deeper than the bottom end of the rotary tillage blade 10, which plays a role in deep loosening and fertilization.The biofertilizer application device includes a biofertilizer tank 22 and a biofertilizer feed pipe 23. The biofertilizer tank 22 is located above the frame 1 and behind the chemical fertilizer application device. The bottom of the biofertilizer tank is connected to the biofertilizer feed pipe 23. A fertilizer discharge device is located on top of the biofertilizer feed pipe 23. The discharge device has the same structure as the chemical fertilizer application device, consisting of a second drive shaft 24, a second sprocket 25, and a fertilizer discharge plate 20. The second sprocket 25 is mounted on the second drive shaft 24 and connected to the sprocket of the drive motor 5 via a second chain 26. The fertilizer discharge plate 20 is mounted on the second drive shaft 24, which passes through the biofertilizer feed pipe 23. The biofertilizer feed pipe 23 is made of a plastic hose. The lower end of the biofertilizer feed pipe 23 is fixed to a boat-shaped seed protector 32 behind the disc opener 31 and communicates with the lower end of the seed pipe 41. The soybean sowing device is installed on both sides of the composite seeder, with two sets on each side. The soybean sowing device includes a soybean sowing device connector 30, a disc furrow opener 31, a boat-shaped seed protector 32, a soybean sowing device 33, a soybean seed box 34, and a pressing wheel 35. The soybean sowing device connector 30 is in a side "T" shape. The upper end of the connector 30 is fixed to the rear end of the frame 1, and the lower end is connected to the center of the axis of the disc furrow opener 31. The soybean seed box 34 is fixed on the middle cross section of the connector 30, and the soybean sowing device 33 is fixed below the middle cross section. The lower part of the middle of the middle cross section is hinged to the pressing wheel arm 36. An adjusting screw rod 37 is provided between the rear end of the middle cross section and the pressing wheel arm 36. The upper part of the adjusting screw rod 37 is provided with a spring 38 and a knob 39. A steering sprocket 40 is provided above the hinge point in the middle of the middle cross section. The adjusting knob 39 can adjust the height of the pressing wheel 36 to adjust the pressing depth. The disc opener 31 is shaped like an "eight" from front to back, with a plow-shaped front end and an open rear end. A boat-shaped seed protector 32, formed by two symmetrical vertical plates, is attached to the rear of the disc opener 31. The lowest end of the disc opener 31 is 20 mm higher than the lowest end of the rotary blade 10. The soybean seeder 33 is connected to a soybean seed tank 34 at the top and a seed tube 41 at the bottom. The lower end of the seed tube 41 extends into the boat-shaped seed protector 32. The lower end of the pressure wheel arm 36 is connected to a pressure wheel 35. A pressure sprocket 42 is attached to one side of the pressure wheel 35. This sprocket 42 is connected to the sprocket of the soybean seeder 33 via chain 3 43, a steering sprocket 40, and chain 4 44. Power is transmitted from the pressure wheel to the soybean seeder 33. The pressure wheel arm 36 is equipped with a tensioner for chain 3 43. The soybean seeder 33 uses a dual seeding mechanism. The steering sprocket 40 is a double sprocket in parallel.

[0027] like Figure 4-9As shown, the corn sowing device is installed in the center two rows of the composite seeder. The corn sowing device includes a corn sowing device connector, a disc furrow opener 31, a boat-shaped seed protector 32, a corn seeder 50, a corn seed box 51, and a pressing wheel 35. The corn sowing device connector consists of a fixing member 52, a sliding member 53, a screw 54, a connecting rod 55, and a handle 56. One side of the fixing member 52 is fixed to the frame 1, and the middle of the other side is provided with a longitudinal semicircular groove 57. A neck semicircular groove 58 with a smaller diameter than the semicircular groove 57 is provided between the top of the fixing member 52 and the semicircular groove 57. The slider 53 is fork-shaped. A semicircular threaded groove 60 is located in the upper center of one side of the fork-shaped handle 59, corresponding to the semicircular groove 57 of the fixed member 53. The semicircular threaded groove 60 of the slider 53 is fixed relative to the semicircular groove 57 of the fixed member 53. The fork 61 of the slider 53 is divided into two prongs, which respectively fix the corn planter 50 and the disc opener 31. A support 62 for the corn seed box 51 is located on one side of the fork. The screw 54 corresponds to the semicircular threaded groove 60 of the slider 53 and is connected to the handle 56 via a connecting rod 55. When the handle 56 is turned, the screw 54 slides in place within the semicircular groove 57 of the fixed member 52, while the slider 53 with the semicircular threaded groove 60 corresponding to the screw 54's threaded connection moves up and down, thereby driving the entire corn planter up and down, thereby adjusting the seeding depth. The lowest end of the disc opener 31 of the corn planter is flush with the lowest end of the rotary blade 10. The corn seeder 50 is a single-grain seeder.

[0028] like Figure 10 As shown, the relative positions of the fertilizer, bacterial fertilizer, and seeds of the present invention are as follows: bacterial fertilizer 64 is placed in the same hole as seed hole 65; fertilizer hole 63 in the soybean row is directly in front of seed hole 65; and fertilizer hole 63 in the corn row is on both sides in front of seed hole 65. The spacing between the soybean rows on both sides is 30-35 cm, the spacing between the two middle rows of corn is 45-50 cm, and the spacing between the corn and soybean rows is 60 cm.

Claims

1. A corn and soybean deep loosening fertilization deep furrow sowing strip composite seeder, comprising a traction device, a rotary tillage device, a fertilizer applying device, a bacterial fertilizer applying device, a soybean sowing device and a corn sowing device; the traction device comprises a frame, a traction rod 1, a traction rod 2, a power gearbox and a drive motor; the rotary tillage device is arranged below the frame, and comprises a rotary tillage shaft, a rotary tillage shaft bearing, a transmission shaft, a baffle, a rotary tillage blade, a cutting blade and a knife holder; the rotary tillage shaft is fixed to the lower side of the frame through the rotary tillage shaft bearing and the baffle, and the rotary tillage shaft is connected to the power gearbox through the transmission shaft; a plurality of knife holders are welded in an orderly manner on the rotary tillage shaft, and a plurality of rotary tillage blades and cutting blades are provided on the knife holders; the rotary tillage blades are distributed in front of the furrow opener of the seeder, the connection angle between the knife handle of the rotary tillage blade and the rotary tillage blade is 120 degrees, the cutting blades are distributed between the rotary tillage blades, the connection angle between the knife handle of the cutting blade and the cutting blade is 90 degrees, the rotary tillage blade and the cutting blade The fertilizer discharging device comprises a fertilizer box and a fertilizer pipe, the fertilizer box is arranged above the frame, the bottom of the fertilizer box is connected to the fertilizer pipe at the rear, and a fertilizer discharging device is provided on the top of the fertilizer pipe, the fertilizer discharging device consists of a transmission shaft 1, a sprocket 1 and a fertilizer discharging piece, the sprocket 1 is arranged on the transmission shaft 1, the sprocket 1 is connected to the sprocket of the driving motor via a chain 1, and the fertilizer discharging piece is provided on the transmission shaft 1 passing through the fertilizer pipe; the bacterial fertilizer discharging device comprises a bacterial fertilizer box and a bacterial fertilizer discharge pipe, the bacterial fertilizer box is arranged above the frame and behind the fertilizer discharging device, the bottom of the bacterial fertilizer box is connected to the bacterial fertilizer discharge pipe, and the top of the bacterial fertilizer discharge pipe is provided with a fertilizer discharging device, the structure of the fertilizer discharging device is the same as the fertilizer discharging structure of the fertilizer discharging device, and consists of a second transmission shaft, a second sprocket and a fertilizer discharging piece, the second sprocket is arranged on the second transmission shaft, the second sprocket is connected to the sprocket of the driving motor via a chain 2, and the fertilizer discharging piece is provided on the second transmission shaft passing through the bacterial fertilizer discharge pipe; it is characterized in that The middle and upper part of the fertilizer pipe is an elliptical straight pipe, the middle and lower part is an elliptical curved pipe, and the bottom is a plow-shaped head connected to the elliptical curved pipe. The middle and lower part of the fertilizer pipe is fixedly inserted between the rotary tiller and the cutting knife. The front and rear positions of the plow-shaped bottom of the fertilizer pipe are located directly below the rotary tiller shaft. The plow-shaped bottom of the fertilizer pipe is located 80-90 mm on both sides of the center of the corn furrow opener and on the center line of the soybean furrow opener. The bottom end of the plow-shaped bottom is 50-60 mm deeper than the bottom end of the rotary tiller. The bacterial fertilizer discharge pipe is made of a plastic hose, and the lower end of the bacterial fertilizer discharge pipe is fixed to the rear side of the disc furrow opener. The boat-shaped seed protector is connected to the lower end of the seed tube; the soybean sowing device is arranged on both sides of the compound seeder, with two sets on each side; the soybean sowing device includes a soybean sowing device connector, a disc furrow opener, a boat-shaped seed protector, a soybean seeder, a soybean seed box, and a pressing wheel; the soybean sowing device connector is in a side "T" shape, the upper end of the connector is fixed to the rear end of the frame, and the lower end is connected to the center of the axis of the disc furrow opener, the soybean seed box is fixed on the middle cross section of the connector, the soybean seeder is fixed under the middle cross section, and the lower part of the middle of the middle cross section is hinged to the pressing wheel The pressure wheel arm, an adjusting screw rod is provided between the rear end of the middle cross section and the pressure wheel arm, a spring and a knob are provided on the upper section of the adjusting screw rod, and a steering sprocket is provided above the hinge point in the middle of the middle cross section; the disc furrow opener is in the shape of an "eight" figure in front and back, with a plow-shaped front end and an open rear end. A boat-shaped seed protector formed by two symmetrical vertical plates is connected to the rear of the axis of the disc furrow opener. The lowest end of the disc furrow opener is 20mm higher than the lowest end of the rotary tillage blade; the soybean seeder is connected to the soybean seed box at the top and the seed tube at the bottom. The lower end of the seed tube extends into the inner side of the boat-shaped seed protector; the lower end of the pressure wheel arm Connect the pressing wheel, a pressing sprocket is provided on one side of the pressing wheel, the pressing sprocket is connected to the sprocket of the soybean seeder through chain three, the steering sprocket and the chain four, and the pressing wheel transmits power to the soybean seeder; the pressing wheel arm is provided with a tensioning wheel of chain three, and the steering sprocket is a double sprocket in parallel; the corn sowing device is arranged in the two central rows of the composite seeder, and the corn sowing device includes a corn sowing device connector, a disc furrow opener, a boat-shaped seed protector, a corn sowing device, a corn seed box and a pressing wheel; the corn sowing device connector is composed of a fixing part, a sliding part, It is composed of a screw, a connecting rod and a handle. One side of the fixing part is fixed to the frame, and a longitudinal semicircular groove is provided in the middle of the other side. A neck semicircular groove with a diameter smaller than the semicircular groove is provided between the top of the fixing part and the semicircular groove; the sliding part is fork-shaped, and a semicircular threaded groove corresponding to the semicircular groove of the fixing part is provided in the upper middle part of one side of the fork-shaped handle. The semicircular threaded groove of the sliding part is relatively fixed to the semicircular groove of the fixing part. The forked part of the sliding part is two forks, which respectively fix the corn seeder and the disc furrow opener, and a support platform for the corn seed box is provided on one side of the fork; the screw corresponds to the semicircular threaded groove of the sliding part, and the screw is connected to the handle via a connecting rod; the lowest end of the disc furrow opener of the corn sowing device is flush with the lowest end of the rotary tiller.

2. The corn and soybean deep loosening fertilization deep furrow sowing belt composite seeder according to claim 1 is characterized in that: The soybean seeder adopts a double-grain seeder.

3. The corn and soybean deep loosening fertilization deep furrow sowing belt composite seeder according to claim 1 is characterized in that: The corn seeder adopts a single-grain seeder.

4. The corn and soybean deep loosening fertilization deep furrow sowing belt composite seeder according to claim 1 is characterized in that: The relative positions of chemical fertilizers, microbial fertilizers and seeds are as follows: the microbial fertilizers are placed in the same hole as the seeds, the fertilizer holes in the soybean row are directly in front of the seed holes, and the fertilizer holes in the corn row are on both sides of the front of the seed holes; the row spacing between soybeans on both sides is 30-35cm, the row spacing between the two rows of corn in the middle is 45-50cm, and the row spacing between corn and soybeans is 60cm.

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