A seeder for both sowing and fertilizing

Abstract

The invention comprises a frame, a wheel, a pressing wheel, a sowing mechanism, a fertilizing mechanism, a straw dispersing mechanism, a straw code-splitting member, a worm gear part, a first transmission chain and a second transmission chain; the wheel and the pressing wheel are respectively arranged at the front and rear ends of the frame, and the wheel is arranged at both sides of the front end of the frame; the sowing mechanism, the fertilizing mechanism and the straw expansion mechanism are arranged in sequence on the frame along the direction in which the wheel points to the pressing wheel; the straw dispersing mechanism is evenly distributed between the sowing mechanism, the fertilizing mechanism and the straw code-splitting member; the pressing wheel is connected to the fertilizing mechanism through the worm gear part; the fertilizing mechanism and the sowing mechanism are connected through the first transmission chain, and the second transmission chain is connected to the straw dispersing mechanism. The invention can evenly spread seeds and fertilizers on the land, greatly improves the efficiency of sowing and fertilizing, and also moves the straw on the surface to a suitable position to avoid affecting the germination of seeds, thereby improving the germination rate of seeds.

Description

Technical Field

[0001] The invention relates to a seeder, in particular to a seeder which does not require rotary tillage of the land and can simultaneously sow and fertilize, belonging to the technical field of agricultural sowing machinery. Background Art

[0002] After the harvest of crops such as corn and wheat, straw will be left in the fields. Before sowing and fertilizing, the straw covering the land for pre-sowing and fertilization needs to be cleared away before sowing and fertilizing on the surface. The currently used seeders only sprinkle seeds and fertilizers on the ground, then cover and compact the soil, without cleaning the straw covering the seeds. The straw covering the seeds will affect the germination rate of the seeds. Therefore, a seeder is needed that can clear the straw covering the sowing route during sowing and fertilization to avoid affecting seed germination. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a seeder for sowing and fertilizing, which can not only clean the straw above the seeds, but also improve the efficiency of sowing and fertilizing.

[0004] The problem described in the present invention is solved by the following technical solutions:

[0005] A seeder for both sowing and fertilizing, comprising a frame, wheels, a pressing wheel, a sowing mechanism, a fertilizing mechanism, a straw dispersing mechanism, a straw code-splitting member, a worm gear part, a first transmission chain and a second transmission chain; the wheels and the pressing wheel are respectively arranged at the front and rear ends of the frame, and the wheels are arranged on both sides of the front end of the frame; the sowing mechanism, the fertilizing mechanism and the straw expanding mechanism are arranged in sequence on the frame along the direction in which the wheels point to the pressing wheel; the straw dispersing mechanism is evenly distributed between the sowing mechanism, the fertilizing mechanism and the straw code-splitting member; the pressing wheel is connected to the fertilizing mechanism through the worm gear part; the fertilizing mechanism and the sowing mechanism are connected through the first transmission chain; the second transmission chain The moving chain is connected to the straw dispersion mechanism; the worm gear part and the first transmission chain are arranged in cooperation; the straw expansion mechanism includes a code dividing disk, a support shaft, a connecting rod, a screw, a nut, a sleeve and a spring; one end of the connecting rod is connected to the support shaft, and the other end is connected to the screw; the two support shafts on one end of the connecting rod form an obtuse angle with each other; the support shaft is connected to the code dividing disk, and there is an acute angle between the code dividing disks; the acute angle edges of the code dividing disks are 1-2cm apart; the outer surface of the code dividing disk is evenly provided with a plurality of friction ribs along the outer circumference, and the straight line where the friction ribs are located passes through the center of the circle; a spring is sleeved on the screw for connecting the rod to reduce shock; the screw passes through the hole at the top of the sleeve, and the part of the screw passing through the sleeve is connected There is a nut; the first sowing tube, the second sowing tube and the fertilizing tube are all provided with an adjusting device; the adjusting device includes an eccentric cam, an elastic membrane, a latch, a latch seat, a limit column and a second rotating shaft; the first sowing tube, the second sowing tube and the fertilizing tube are additionally provided with an elongated through hole; the two ends of the second rotating shaft are arranged on the upper and lower end surfaces of the elongated through hole, and the distance from the second rotating shaft to the side end surface of the elongated through hole is greater than the minimum distance r from the rotating center hole to the outer circumference of the eccentric cam; the rotating center hole of the eccentric cam is axially connected to the second rotating shaft, and the eccentric cam is horizontally placed and orthogonal to the tube wall of each sowing and fertilizing tube; the latch seat is arranged above the elongated through hole; the eccentric cam is provided with a plurality of evenly distributed latch through holes, The centers of the latch holes are evenly distributed on a circle with the rotating center hole as the center and the line connecting the projection point of the center of the hole on the latch seat on the eccentric cam and the center of the rotating center hole as the radius; a plurality of latch holes correspond to different discharging gears from large to small; the latch passes through the hole of the latch seat and is inserted into the latch hole of the eccentric cam; the elastic membrane is arranged on the inner wall of the tube, which completely covers the elongated through hole; a limiting column is arranged on the inner wall of the tube below the elongated through hole; an elliptical through hole is arranged on the elastic membrane at a position below the elongated through hole; one end of the limiting column passes through the elliptical through hole and is fixed on the inner wall of the tube, and a stopper is arranged on the other end; the elastic membrane and the eccentric cam are arranged in coordination.

[0006] In the above-mentioned dual-purpose seeder for sowing and fertilizing, an arc-shaped protective cover is additionally provided on the connecting rod; the shape of the arc-shaped protective cover is a duckbill arc shape; the arc-shaped protective cover is arranged above the coding disk; the area of ​​the arc-shaped protective cover projected on the ground is larger than the area of ​​the area enclosed by the support shaft and the coding disk projected on the ground.

[0007] The above-mentioned seeder for both sowing and fertilizing, the sowing mechanism includes a first sowing tube, a second sowing tube, a first sowing plow foot, a second sowing plow foot and a seed box; the seed box is arranged on a frame; the first sowing plow foot and the second sowing plow foot are both arranged on the frame, and the position of the first sowing plow foot is closer to the wheel than the position of the second sowing plow foot; the bottom surface of the seed box is connected with the first sowing tube and the second sowing tube; the first sowing tube is connected to the first sowing plow foot, and the second sowing tube is connected to the second sowing plow foot.

[0008] The above-mentioned seeder for both sowing and fertilizing, the fertilizing mechanism comprises a fertilizing pipe, a fertilizer storage bucket and a fertilizing plow foot; the fertilizer storage bucket and the fertilizing plow foot are both arranged on a frame; one end of the fertilizing pipe is connected to the bottom surface of the fertilizer storage bucket, and the other end is connected to the fertilizing plow foot.

[0009] In the above-mentioned seeder for both sowing and fertilizing, the straw dispersing mechanism includes a first straw dispersing member, a second straw dispersing member and a third straw dispersing member; the first straw dispersing member is arranged between the first sowing plow foot and the wheel; the second straw dispersing member is arranged between the first sowing plow foot and the second sowing plow foot; the third straw dispersing member is arranged between the second sowing plow foot and the fertilizing plow foot.

[0010] In the above-mentioned dual-purpose seeder for sowing and fertilizing, the straw dispersing parts included in the straw dispersing mechanism are composed of a first rotating shaft and paddles; the two ends of the first rotating shaft are arranged on the frame; the paddles are in multiple groups, and each group of paddles is located on the same radial plane of the first rotating shaft; each group of paddles consists of 4 paddles arranged in equal circles.

[0011] The present invention effectively spreads the straw evenly on the cultivated land through the straw dividing piece and the straw dispersing piece; wherein, the straw dividing piece is arranged at the rear of the sowing tube, and is used to push the straw on the sowing route to both sides, so as to avoid the straw covering the seeds, thereby affecting the germination of the seeds, and greatly improving the germination rate of the seeds; after the crops are harvested, there will be a large amount of straw on the cultivated land, and the distribution of these straws is uneven, so there are many defects. Due to the uneven distribution of the straw, the straw thickness is large in some places, and there is no straw in other places. The places with thick straw can have a certain moisturizing effect on the ground due to the slow evaporation rate of water, but in the places without straw, the water is easy to evaporate, and the ground is easy to harden, which is not conducive to the growth of wheat.

[0012] In addition, the present invention is also provided with an adjusting device, which can adjust the sowing amount of seeds and fertilizers to ensure that the seeds and fertilizers can be evenly sown on the cultivated land during the sowing process, thereby avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the straw code dividing member of the present invention;

[0016] Figure 4 It is a schematic cross-sectional view of the structure of the regulating device of the present invention;

[0017] Figure 5 This is a schematic diagram of the main structure of the eccentric cam of the present invention;

[0018] Figure 6 It is a schematic diagram of the elastic membrane structure of the present invention.

[0019] The reference numerals in the figure are as follows: 1. frame, 2. wheel, 3. pressing wheel, 4. straw coder, 4-1. coder plate, 4-2. support shaft, 4-3. connecting rod, 4-4. screw rod, 4-5. nut, 4-6. sleeve, 4-7. spring, 5. arc-shaped protective cover, 6. first sowing tube, 7. second sowing tube, 8. first sowing hoe foot, 9. second sowing hoe foot, 10. seed box, 11. fertilizer tube, 12. fertilizer storage bucket, 13. fertilizer Fertilizer plow foot, 14. first straw disperser, 15. second straw disperser, 16. third straw disperser, 17. second transmission chain, 18. first rotating shaft, 19. paddle, 20. eccentric cam, 21 elastic membrane, 22. latch, 23. latch seat, 24. second rotating shaft, 25. long through hole, 26. rotating center hole, 27. latch through hole, 28. first transmission chain, 29. worm gear part, 30. limit column, 31. block. DETAILED DESCRIPTION

[0020] See also Figure 1 , 2 , 3, 4 and Figure 5The present invention comprises a frame 1, a wheel 2, a pressing wheel 3, a sowing mechanism, a fertilizing mechanism, a straw dispersing mechanism, a straw code dividing member 4, a worm gear part 29, a first transmission chain 28 and a second transmission chain 17; the wheel 2 and the pressing wheel 3 are respectively arranged at the front and rear ends of the frame 1, and the wheel 2 is arranged on both sides of the front end of the frame 1; the front end of the frame is connected to the rear of the tractor, and the tractor provides the seeder with forward power; the sowing mechanism, the fertilizing mechanism and the straw expanding mechanism are sequentially arranged on the frame 1 along the direction of the wheel 2 pointing to the pressing wheel 3; the present invention is provided with three sets of straw dispersing members, among which the first straw dispersing member 14 is located at the front end of the frame 1, between the first sowing plow foot 8 and the wheel 2; it is provided with four groups of paddles 19, each group A first sowing plow foot 8 is arranged directly behind the paddle; a second straw dispersing member 15 is arranged 15 cm laterally behind the first sowing plow foot 8, and is provided with four groups of paddles 19, and a second sowing plow foot 9 is arranged directly behind each group of paddles 19; a third straw dispersing member 16 is arranged 15 cm laterally behind the second sowing plow foot 9, and is provided with four groups of paddles 19, and a fertilizing plow foot 13 is arranged directly behind each group of paddles 19; the straw code dividing member 4 is arranged behind the fertilizing plow foot 13; the two code dividing disks 4-1 of the straw code dividing member 4 are respectively located on the sowing routes of the first sowing tube 6 and the second sowing tube 7. When the seeds are sown on the land, the code dividing disk 4-1 can push away the straw directly above the seeds, thereby avoiding affecting the seeds. The seeds germinate; the pressing wheel 3 is indirectly spliced ​​by cylinders of one large and one small diameter, wherein the cylinder with the large diameter is located directly behind the straw code dividing piece 4; when the seeds are sown and the code dividing disc 4-1 also pushes away the straw, the large diameter cylinder of the pressing wheel 3 covers the sown land with soil; the fertilizing mechanism and the sowing mechanism are connected by a first transmission chain 28; the pressing wheel 3 and the fertilizing mechanism are connected by a worm gear part 29; when the tractor drags the frame 1 forward, the pressing wheel 3 connected to the frame 1 also rotates, thereby driving the worm gear on the rotating shaft of the pressing wheel 3 to rotate, the worm gear is connected to the worm gear, the worm gear is connected to the worm gear on the fertilizer storage bucket 12, and the worm gear on the fertilizer storage bucket 12 is connected to the stirring shaft in the fertilizer storage bucket 12, A gear is provided on the stirring shaft, and a gear is also provided on the stirring shaft of the seed box, and these two gears are connected by a first transmission chain 28 to realize transmission; the second transmission chain 17 is connected to the straw dispersion mechanism, and the power source of the second transmission chain 17 comes from the tractor, one end of the second transmission chain 17 is connected to the tractor, and the other end is connected to the gear at one end of the first rotating shaft 18, and the tractor is started. After the second transmission chain 17 is activated, the first rotating shaft 18 is driven to rotate, thereby rotating the paddle 19; in order to push away the straw above the seeds to avoid affecting the germination of the seeds, the present invention is provided with a straw expansion structure; the straw expansion mechanism includes a code disc 4-1, a support shaft 4-2, a connecting rod 4-3, a screw rod 4-4, a nut 4-5, a sleeve 4-6 and a spring 4-7;One end of the connecting rod 4-3 is connected to the support shaft 4-2, and the other end is connected to the screw rod 4-4; the two support shafts 4-2 on one end of the connecting rod 4-3 form an obtuse angle with each other; the support shaft 4-2 is connected to the code dividing disk 4-1, and the code dividing disks 4-1 form an acute angle; the acute angled edges of the code dividing disk 4-1 are 1-2 cm apart; the outer surface of the code dividing disk 4-1 is evenly provided with a plurality of friction ribs along the outer circumference, and the straight line where the friction ribs are located passes through the center of the circle; the friction ribs can increase the friction force on the straw and can better distribute the straw to both sides; the screw rod 4-4 is sleeved with a spring 4-7 for shock absorption of the connecting rod 4-3; the screw 4-4 passes through The hole at the top of the sleeve 4-6, the part of the screw 4-4 passing through the sleeve 4-6 is connected with a nut 4-5; the sleeve 4-6 is arranged on the frame 1; the internal thread of the nut 4-5 is connected with the external thread of the screw 4-4, and the nut 4-5 can effectively prevent the screw 4-4 from falling downward, and rotating the nut 4-5 can make the screw 4-4 move up and down, thereby changing the distance between the code disc 4-1 and the ground. During use, the code disc 4-1 does not contact the ground, and the code disc 4-1 is only responsible for moving the straw on the surface to both sides of the sowing route; the spring 4-7 can provide a buffer for the upward force received by the code disc 4-1 during the distribution process. ;

[0021] The straw code divider 4 distributes the straw to both sides, which will form several straight straw piles. There are two straw piles on both sides of the sowing route. The straw piles can increase the soil temperature. In winter, the soil temperature with straw piles is two degrees higher than that without straw piles, which is conducive to the wintering of seeds and allows wheat to collect heat effectively in winter. The straw piles can also keep warm and resist drought, increase the organic matter content of the soil, and prevent soil sandiness.

[0022] An arc-shaped protective cover 5 is additionally provided on the connecting rod 4-3; the shape of the protective cover 5 is a duckbill arc shape; the arc-shaped protective cover 5 is arranged above the code dividing disk 4-1; the area of ​​the arc-shaped protective cover 5 projected on the ground is larger than the area of ​​the area enclosed by the support shaft 4-2 and the code dividing disk 4-1 projected on the ground, and the arc-shaped protective cover 5 can well cover the top of the code dividing disk 4-1; the arc-shaped protective cover 5 can effectively prevent straw from entering the gap between the code dividing disks 4-1, jam the support shaft 4-2, and prevent the straw from affecting the rotation of the code dividing disk 4-1.

[0023] The sowing mechanism includes a first sowing tube 6, a second sowing tube 7, a first sowing hoe foot 8, a second sowing hoe foot 9 and a seed box 10; the seed box 10 is arranged on the frame 1; the first sowing hoe foot 8 and the second sowing hoe foot 9 are both arranged on the frame 1, and the position of the first sowing hoe foot 8 is closer to the wheel 2 than the position of the second sowing hoe foot 9; the bottom surface of the seed box 10 is connected with the first sowing tube 6 and the second sowing tube 7; the first sowing tube 6 is connected to the first sowing hoe foot 8, and the second sowing tube 7 is connected to the second sowing hoe foot 9. A sowing plow foot 9; the plow foot is arranged under the ground surface, and is used to arch the soil and bury fertilizers and seeds under the ground surface; the sowing pipe and the fertilizer pipe are arranged behind their corresponding plow feet, and sowing and fertilizing can be carried out in time after the plow feet arch the soil; the fertilization mechanism includes a fertilizer pipe 11, a fertilizer storage bucket 12 and a fertilizer plow foot 13; the fertilizer storage bucket 12 and the fertilizer plow foot 13 are both arranged on the frame 1; one end of the fertilizer pipe 11 is connected to the bottom surface of the fertilizer storage bucket 12, and the other end is connected to the fertilizer plow foot 13.

[0024] In order to avoid uneven distribution of straw on the ground, the present invention is provided with a straw dispersing mechanism; the straw dispersing parts included in the straw dispersing mechanism are composed of a first rotating shaft 18 and a paddle 19; both ends of the first rotating shaft 18 are arranged on the frame 1; the paddles 19 are multiple groups, and each group of paddles 19 is located on the same radial plane of the first rotating shaft 18; each group of paddles 19 is 4 paddles 19 arranged in equal circles; a second transmission chain 17 is provided at one end of the first rotating shaft 18, and the second transmission chain 17 is also connected to the tractor, and when the tractor is started, it can drive the first rotating shaft 18 to rotate.

[0025] In order to control the amount of seeds and fertilizers, the present invention is provided with an adjustment device; the first sowing tube, the second sowing tube and the fertilizer tube are all provided with an adjustment device; the adjustment device comprises an eccentric cam 20, an elastic membrane 21, a latch 22, a latch seat 23, a limit column 30 and a second rotating shaft 24; the first sowing tube, the second sowing tube and the fertilizer tube are additionally provided with an elongated through hole 25; the two ends of the second rotating shaft 24 are arranged on the upper and lower end surfaces of the elongated through hole 25, and the distance from the second rotating shaft 24 to the side end surface of the elongated through hole 25 is greater than the minimum distance r from the rotation center hole 26 to the outer circumference of the eccentric cam 20; the rotation center of the eccentric cam 20 The hole 26 is axially connected to the second rotating shaft 24, and the eccentric cam 20 is placed horizontally and is orthogonal to the tube wall of each sowing and fertilizing tube; the latch seat 23 is arranged above the elongated through hole 25; the eccentric cam 20 is provided with a plurality of evenly distributed latch through holes 27, and the centers of the latch through holes 27 are evenly distributed on a circle with the rotation center hole 26 as the center and the projection point of the hole center on the latch seat 23 on the eccentric cam 20 and the center of the rotation center hole 26 as the radius; the plurality of latch through holes 27 correspond to different discharging gears from large to small; the latch 22 passes through the hole of the latch seat 23 and is inserted into the eccentric cam 20 The elastic membrane 21 is arranged on the inner wall of the tube, which completely covers the elongated through hole 25; when the amount of sowing and fertilization needs to be adjusted, the eccentric cam 20 is rotated to rotate around the second rotating shaft 24, and the eccentric cam 20 is in close contact with the elastic membrane 21 arranged on the inner wall of the tube. When the eccentric cam 20 rotates inward or outward of the tube, the elastic membrane is also deformed, thereby changing the flux in the tube and changing the sowing and fertilization speed; when the eccentric cam 20 is rotated to a suitable position, the latch 22 is inserted into the through hole 27 through the latch seat 23, so that the eccentric cam 20 can be ensured not to be arbitrarily moved during the operation of the seeder. The eccentric cam 20 is provided with a stopper 31, and the stopper 31 is provided on the inner wall of the tube to prevent the elastic membrane 21 from falling off from the stopper 30.

Claims

1. A seeder for both sowing and fertilizing, characterized in that: The machine comprises a frame (1), a wheel (2), a pressing wheel (3), a sowing mechanism, a fertilizing mechanism, a straw dispersing mechanism, a straw code-splitting member (4), a worm gear part (29), a first transmission chain (28) and a second transmission chain (17); the wheel (2) and the pressing wheel (3) are respectively arranged at the front and rear ends of the frame (1), and the wheel (2) is arranged on both sides of the front end of the frame (1); the sowing mechanism, the fertilizing mechanism and the straw expanding mechanism are arranged in sequence on the frame (1) along the direction from the wheel (2) to the pressing wheel (3); the straw dispersing mechanism is evenly distributed between the sowing mechanism, the fertilizing mechanism and the straw code-splitting member (4); the pressing wheel (3) and the fertilizing mechanism are connected to each other through a worm gear. The worm gear part (29) is connected to the sowing mechanism through a transmission chain (28); the fertilizing mechanism and the sowing mechanism are connected through a first transmission chain (28); the second transmission chain (17) is connected to the straw dispersing mechanism; the worm gear part (29) and the first transmission chain (28) are arranged in coordination; the straw expanding mechanism comprises a code disc (4-1), a support shaft (4-2), a connecting rod (4-3), a screw rod (4-4), a nut (4-5), a sleeve (4-6) and a spring (4-7); one end of the connecting rod (4-3) is connected to the support shaft (4-2), and the other end is connected to the screw rod (4-4); the two support shafts (4-2) on one end of the connecting rod (4-3) form an obtuse angle with each other; the support shaft ( 4-2) is connected to a code disk (4-1) with an acute angle between the code disks (4-1); the acute angled edges of the code disks (4-1) are 1-2 cm apart; the outer surface of the code disk (4-1) is evenly provided with a plurality of friction ribs along the outer circumference, and the straight line where the friction ribs are located passes through the center of the circle; a spring (4-7) is sleeved on the screw rod (4-4) for shock absorption of the connecting rod (4-3); the screw rod (4-4) passes through the hole at the top end of the sleeve (4-6), and the part of the screw rod (4-4) passing through the sleeve (4-6) is connected with a nut (4-5); the first sowing tube, the second sowing tube and the fertilizer tube are all provided with an adjustment device; the adjustment device includes an eccentric cam (20), an elastic membrane (2 1), a latch (22), a latch seat (23), a limiting column (30) and a second rotating shaft (24); an elongated through hole (25) is additionally provided on the first sowing tube, the second sowing tube and the fertilizing tube; the two ends of the second rotating shaft (24) are arranged on the upper and lower end surfaces of the elongated through hole (25), and the distance from the second rotating shaft (24) to the side end surface of the elongated through hole (25) is greater than the minimum distance r from the rotating center hole (26) to the outer circumference of the eccentric cam (20); the rotating center hole (26) of the eccentric cam (20) is axially connected to the second rotating shaft (24), and the eccentric cam (20) is horizontally placed and is orthogonal to the tube wall of each sowing and fertilizing tube; the latch seat (23) is arranged above the elongated through hole (25);The eccentric cam (20) is provided with a plurality of evenly distributed latch holes (27), the centers of the latch holes (27) being evenly distributed on a circle with the rotation center hole (26) as the center and the line connecting the projection point of the center of the hole on the latch seat (23) on the eccentric cam (20) and the center of the rotation center hole (26) as the radius; the plurality of latch holes (27) respectively correspond to different discharging gears from large to small; the latch (22) passes through the hole of the latch seat (23) and is inserted into the eccentric cam (20). ) in the plug through hole (27) of the tube; the elastic membrane (21) is arranged on the inner wall of the tube, and completely covers the elongated through hole (25); a limiting column (30) is arranged on the inner wall of the tube below the elongated through hole (25); the elastic membrane (21) is provided with an elliptical through hole at a position below the elongated through hole (25); one end of the limiting column (30) passes through the elliptical through hole and is fixed on the inner wall of the tube, and a stopper (31) is arranged at the other end; the elastic membrane (21) and the eccentric cam (20) are arranged in coordination. ; 2. The dual-purpose seeder for sowing and fertilizing according to claim 1, characterized in that: An arc-shaped protective cover (5) is additionally provided on the connecting rod (4-3); the shape of the arc-shaped protective cover (5) is a duckbill arc shape; the arc-shaped protective cover (5) is arranged above the code dividing disk (4-1); the area of ​​the arc-shaped protective cover (5) projected on the ground is larger than the area of ​​the area enclosed by the support shaft (4-2) and the code dividing disk (4-1) projected on the ground.

3. The dual-purpose seeder for sowing and fertilizing according to claim 2, characterized in that: The sowing mechanism comprises a first sowing tube (6), a second sowing tube (7), a first sowing plow foot (8), a second sowing plow foot (9) and a seed box (10); the seed box (10) is arranged on a frame (1); the first sowing plow foot (8) and the second sowing plow foot (9) are both arranged on the frame (1), and the position of the first sowing plow foot (8) is closer to the wheel (2) than the position of the second sowing plow foot (9); the bottom surface of the seed box (10) is connected to the first sowing tube (6) and the second sowing tube (7); the first sowing tube (6) is connected to the first sowing plow foot (8), and the second sowing tube (7) is connected to the second sowing plow foot (9).

4. The dual-purpose seeder for sowing and fertilizing according to claim 3 is characterized in that: The fertilization mechanism comprises a fertilization pipe (11), a fertilizer storage bucket (12) and a fertilization plow foot (13); the fertilizer storage bucket (12) and the fertilization plow foot (13) are both arranged on a frame (1); one end of the fertilization pipe (11) is connected to the bottom surface of the fertilizer storage bucket (12), and the other end is connected to the fertilization plow foot (13).

5. The dual-purpose seeder for sowing and fertilizing according to claim 4 is characterized in that: The straw dispersing mechanism comprises a first straw dispersing member (14), a second straw dispersing member (15) and a third straw dispersing member (16); the first straw dispersing member (14) is arranged between the first sowing plow foot (8) and the wheel (2); the second straw dispersing member (15) is arranged between the first sowing plow foot (8) and the second sowing plow foot (9); and the third straw dispersing member (16) is arranged between the second sowing plow foot (9) and the fertilizing plow foot (13).

6. The dual-purpose seeder for sowing and fertilizing according to claim 5, characterized in that: The straw dispersing parts included in the straw dispersing mechanism are composed of a first rotating shaft (18) and paddles (19); both ends of the first rotating shaft (18) are arranged on the frame (1); the paddles (19) are multiple groups, and each group of paddles (19) is located on the same radial plane of the first rotating shaft (18); each group of paddles (19) is composed of four paddles (19) arranged in an equicircular manner.

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