Agricultural combined seed and fertilizer drill

Abstract

The agricultural fertilizing and seeding machine comprises a mounting base plate, a fertilizing mechanism, a seeding mechanism and a fertilizer dispersing mechanism, wherein two mounting holes are formed in the mounting base plate, and the fertilizing mechanism is arranged on one mounting hole in a penetrating manner; the seeding mechanism comprises a seed funnel, a seed guide cylinder and a seed discharge nozzle which are sequentially communicated from top to bottom, and the seed funnel is arranged on the other mounting hole; the fertilizer dispersing mechanism comprises a first gear arranged on the seed guide cylinder, a connecting rod and a dispersing rake; the transmission structure comprises a mounting base plate, a first spring, an annular discharging plate and a fixing plate, the mounting plate is fixed to the seed guide cylinder, the seed discharging nozzle is sleeved with the discharging plate, the fixing plate is connected with the discharging plate, the mounting plate is connected with the fixing plate through the spring, and a transmission part is arranged between the discharging plate and the first gear; in conclusion, the situation that plants grow unevenly or are damaged due to excessive fertilization at local positions around the seeds after sowing can be avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural machinery, and particularly relates to an agricultural fertilizer and seed drill. Background Art

[0002] When fertilizing after sowing seeds, the fertilizing position should take into account the growth of seeds and seedlings as well as the nutrient requirements to ensure that plants can effectively absorb nutrients and promote growth; in order to avoid direct contact between fertilizers and seeds, which may cause seed burns or mildew, the fertilizing position should be at a certain distance from around the seeds, which can reduce the direct stimulation to the seeds and prevent the high concentration of fertilizers from affecting the germination of seeds and the growth of seedlings. Moreover, when fertilizing after sowing, the fertilizers should be evenly dispersed throughout the planting area as much as possible, rather than concentrated in specific positions. This can ensure that plants absorb sufficient nutrients and avoid uneven plant growth or damage caused by excessive local fertilization.

[0003] Existing fertilizer and seed drills generally include: a sowing mechanism, a fertilizing mechanism, a transmission system, and a control system; the sowing mechanism includes a seed box and a seed discharging mechanism, and the seed discharging mechanism is used to control and adjust the discharge amount and discharge interval of seeds to ensure that seeds are evenly distributed on the ground during sowing; the fertilizing mechanism includes a pit-digging component and a fertilizer discharging component. The pit-digging component digs pits near the seed sowing points, and then the fertilizer discharging component places fertilizers in the dug pits and depressions.

[0004] When the existing fertilizer and seed drill digs fertilizing pits, it can only dig pits near the sowing points and bury fertilizers concentratedly, which results in excessive local fertilization around the seeds and causes uneven plant growth or damage. Summary of the Invention

[0005] The purpose of the present invention is to provide an agricultural fertilizer and seed drill, which solves the problem that the existing fertilizer and seed drill causes uneven plant growth or damage due to concentrated fertilization near the sowing points during fertilization.

[0006] The technical solution adopted by the present invention is an agricultural fertilizer and seed drill, including a mounting base plate, and two mounting holes are provided on the mounting base plate. It is characterized in that it further includes:

[0007] A fertilizing mechanism, which is penetrated and arranged on one of the mounting holes;

[0008] A sowing mechanism, including a seed funnel, a seed guiding cylinder, and a seed discharging nozzle that are connected in sequence from top to bottom. The seed funnel is arranged on the other mounting hole, and the seed discharging nozzle is of a conical structure and can penetrate into the soil;

[0009] The fertilizer dispersion mechanism includes a first gear rotatably arranged on the seed guide tube, a connecting rod, and a dispersion rake. The connecting rod is obliquely arranged on the lower end surface of the first gear, and the dispersion rake is arranged on the connecting rod.

[0010] The transmission structure includes a mounting plate, a first spring, an annular discharge plate, and a fixing plate. The mounting plate is fixed on the side wall of the seed guide tube. The discharge plate is sleeved on the seed discharge nozzle. The fixing plate and the discharge plate are horizontally connected. The mounting plate and the fixing plate are connected by a spring. A transmission component is arranged between the discharge plate and the first gear.

[0011] The transmission component includes a transmission rod vertically arranged on the fixing plate. A first worm is arranged at the upper end of the transmission rod. A first turbine meshing with the first worm is also arranged on one side of the seed guide tube. It also includes a first support shaft for supporting the rotation of the first turbine. The first support shaft is horizontally fixed on the seed guide tube through a first support plate. A second support shaft perpendicular to the first support shaft is also arranged on the first support plate. A first bevel gear transmission set is arranged between the first support shaft and the second support shaft. A second gear meshing with the first gear is arranged on the second support shaft.

[0012] A circular seed baffle is also arranged between the seed funnel and the seed guide tube. The seed baffle is rotatably connected to the mounting substrate. A first opening allowing seeds to pass through is arranged on the seed baffle. The center line of the first opening is not collinear with the center line of the seed baffle. A seed conduit is also arranged in the seed guide tube. In the initial position, the first opening is misaligned with the feed port of the seed conduit. When the seed baffle rotates a certain angle, the first opening is communicated with the feed port of the seed conduit.

[0013] A third gear is also arranged at the upper end of the second support shaft. A fourth gear meshing with the third gear is arranged on the outer ring of the seed baffle.

[0014] The fertilizing mechanism includes a fertilizer funnel, a fertilizer guide tube, and a fertilizer discharge nozzle that are connected in series from top to bottom. The fertilizer funnel is fixed on one of the mounting holes.

[0015] Both the seed discharge nozzle and the fertilizer discharge nozzle include a first sample outlet nozzle and a second sample outlet nozzle. The first sample outlet nozzle is hinged on one side of the discharge port of the seed guide tube or the fertilizer guide tube. The second sample outlet nozzle is fixed on the other side of the discharge port of the seed guide tube or the fertilizer guide tube. When the first sample outlet nozzle and the second sample outlet nozzle are closed, the conical seed discharge nozzle and fertilizer discharge nozzle are formed. A lifting component for pulling the first sample outlet nozzle to act is arranged on the side wall of the seed guide tube or the fertilizer guide tube.

[0016] The lifting assembly includes a lifting wire mounting plate disposed on the seed guide tube or the fertilizer guide tube, and further includes a sliding handle slidably disposed on the seed guide tube or the fertilizer guide tube. The lifting wire mounting plate is located above the sliding handle, and a second spring is further disposed between the lifting wire mounting plate and the sliding handle. A lifting wire is connected to the lifting wire mounting plate, and the other end of the lifting wire is connected to the first sample outlet nozzle.

[0017] A circular fertilizer baffle is provided between the fertilizer hopper and the fertilizer guide tube. The fertilizer baffle is provided with a second opening allowing fertilizer to pass through. The center line of the second opening is not collinear with the center line of the fertilizer baffle. A fertilizer conduit is further disposed in the fertilizer guide tube. In the initial position, the second opening is misaligned with the feed inlet of the fertilizer conduit. When the fertilizer baffle rotates by a certain angle, the second opening communicates with the feed inlet of the fertilizer baffle.

[0018] A vertically upward second worm is further provided on one of the sliding handles located on the fertilizer guide tube. A second worm gear meshing with the second worm is provided on one side of the fertilizer guide tube. It further includes a third support shaft for supporting the rotation of the second worm gear. The third support shaft is horizontally fixed on the fertilizer guide tube through a second support plate. A fourth support shaft perpendicular to the third support shaft is further provided on the second support plate. A second bevel gear transmission group is provided between the fourth support shaft and the third support shaft. A fifth gear is provided on the fourth support shaft, and a sixth gear meshing with the fifth gear is provided on the outer circle of the fertilizer baffle.

[0019] The beneficial effects of the present invention are:

[0020] An agricultural fertilizer and seed sowing machine disclosed by the present invention first places fertilizers randomly on the ground near the seed sowing points through a fertilizing mechanism, and then sows seeds through a sowing mechanism. When sowing, the first step is to pierce the discharge nozzle into the soil. When the discharge nozzle enters the soil, the discharge plate is resisted by the ground surface and slides upward under the action of the first spring. When the discharge plate slides upward, it drives a first gear disposed on the guide tube to rotate by a certain angle through a transmission member. Therefore, the connecting rod and the dispersing harrow disposed on the lower end surface of the first gear also perform an arc-shaped movement along with the first gear. Therefore, when the dispersing harrow moves, it can evenly spread the fertilizers concentrated on the ground surface, and the fertilizers are evenly spread with the seed sowing point as the center. In summary, the fertilizer and seed sowing machine disclosed by the present invention can solve the problem that the existing sowing and fertilizing machines can only concentrate and bury fertilizers near the sowing points. The present invention evenly disperses the fertilizers around the seed sowing points, so as to ensure the normal growth of subsequent seeds. Brief Description of the Drawings

[0021] Figure 1 is the front view of an agricultural fertilizer and seed sowing machine of the present invention;

[0022] Figure 2It is the rear view of an agricultural fertilizer and seed planter of the present invention;

[0023] Figure 3 It is the top view of an agricultural fertilizer and seed planter of the present invention.

[0024] In the figure, 1. mounting substrate, 2. mounting hole, 3. fertilizer hopper, 4. fertilizer guide tube, 5. fertilizer discharge nozzle, 6. seed hopper, 7. seed guide tube, 8. seed discharge nozzle, 9. first gear, 10. connecting rod, 11. dispersing harrow, 12. mounting plate, 13. first spring, 14. fertilizer conduit, 15. discharge plate, 16. fixing plate, 17. transmission rod, 18. first worm, 19. first turbine, 20. first support shaft, 21. first support plate, 22. second support shaft, 23. second gear, 24. first opening, 25. second opening, 26. seed conduit, 27. third gear, 28. fourth gear, 29. first sampling nozzle, 30. second sampling nozzle, 31. lifting wire mounting plate, 32. sliding handle, 33. second spring, 34. lifting wire, 35. second worm, 36. second worm gear, 37. third support shaft, 38. fourth support shaft, 39. fifth gear, 40. sixth gear. Specific embodiments

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0026] When fertilizing after seed sowing, the fertilizing position should take into account the growth conditions of the seeds and seedlings and the nutrient requirements to ensure that plants can effectively absorb nutrients and promote growth; in order to avoid direct contact between the fertilizer and the seeds, which may cause seed burning or mildew, the fertilizing position should be at a certain distance from around the seeds, which can reduce the direct stimulation to the seeds and prevent the high concentration of the fertilizer from affecting the germination of the seeds and the growth of the seedlings. And when fertilizing after sowing, the fertilizer should be evenly dispersed throughout the planting area as much as possible, rather than concentrated in a specific position. This can ensure that plants absorb sufficient nutrients and avoid uneven or damaged plant growth caused by excessive local fertilization.

[0027] Existing seed and fertilizer planters generally include: a seeding mechanism, a fertilizing mechanism, a transmission system, and a control system; its seeding mechanism includes a seed box and a seed discharging mechanism, and the seed discharging mechanism is used to control and adjust the discharge amount and discharge interval of the seeds to ensure that the seeds are evenly distributed on the ground during sowing; the fertilizing mechanism includes a pit-digging component and a fertilizer discharging component. The pit-digging component digs pits near the seed sowing points, and then the fertilizer is placed in the dug pits through the fertilizer discharging component.

[0028] When the existing seeding and fertilizing machine digs fertilizing pits, it can only dig pits near the seeding point to concentrate and bury the fertilizer, which causes excessive fertilization in local positions around the seeds, resulting in uneven plant growth or damage.

[0029] An agricultural fertilizing and seeding machine disclosed by the present invention, as Figures 1-3 shown, includes a mounting base plate 1, a fertilizing mechanism, a seeding mechanism, and a fertilizer dispersing mechanism; two mounting holes 2 are provided on the mounting base plate 1, and the fertilizing mechanism is disposed through one of the mounting holes 2; the seeding mechanism includes a seed funnel 6, a seed guiding tube 7, and a seed discharging nozzle 8 that are sequentially communicated from top to bottom. The seed funnel 6 is disposed on the other mounting hole 2. The seed discharging nozzle 8 is of a conical structure and can penetrate into the soil. Seeds are placed in the seed funnel 6 during seeding; the fertilizer dispersing mechanism includes a first gear 9 rotatably disposed on the seed guiding tube 7, a connecting rod 10, and a dispersing harrow 11. The connecting rod 10 is obliquely disposed on the lower end surface of the first gear 9, and the dispersing harrow 11 is disposed on the connecting rod 10; the transmission structure includes a mounting plate 12, a first spring 13, an annular discharging plate 15, and a fixing plate 16. The mounting plate 12 is fixed to the side wall of the seed guiding tube 7. The discharging plate 15 is sleeved on the seed discharging nozzle 8. The fixing plate 16 and the discharging plate 15 are horizontally connected. The mounting plate 12 and the fixing plate 16 are connected by the spring 13. A transmission member is disposed between the discharging plate 15 and the first gear 9.

[0030] Therefore, when the fertilizing and seeding machine disclosed by the present invention is in use, first, the fertilizer is randomly placed on the ground near the seed seeding point through the fertilizing mechanism, and then seeding is carried out through the seeding mechanism. During seeding, in the first step, the discharging nozzle 8 penetrates into the soil. When the discharging nozzle 8 enters the soil, the discharging plate 15 is resisted by the ground and slides upward under the action of the first spring 13. When the discharging plate 15 slides upward, it drives the first gear 9 disposed on the guiding tube 7 to rotate by a certain angle through the transmission member. Therefore, the connecting rod 10 and the dispersing harrow 11 disposed on the lower end surface of the first gear 9 also perform an arc-shaped movement along with the first gear 9. Therefore, when the dispersing harrow 11 moves, it can evenly spread the fertilizer concentrated on the ground, and the fertilizer is evenly spread with the seed seeding point as the center. In summary, the fertilizing and seeding machine disclosed by the present invention can solve the problem that the existing seeding and fertilizing machine can only concentrate and bury the fertilizer near the seeding point. The present invention evenly disperses the fertilizer around the seed seeding point, so as to ensure the normal growth of subsequent seeds.

[0031] To ensure that the first gear 9 can be driven to rotate when the discharge plate 15 slides upward, the transmission components disclosed in this embodiment include a transmission rod 17 vertically arranged on the fixed plate 16. A first worm 18 is provided at the upper end of the transmission rod 17. A first turbine 19 meshing with the first worm 18 is further provided on one side of the seed guide cylinder 7. A first support shaft 20 for supporting the rotation of the first turbine 19 is also included. The first support shaft 20 is horizontally fixed on the seed guide cylinder 7 through a first support plate 21. A second support shaft 22 perpendicular to the first support shaft 20 is further provided on the first support plate 21. A first bevel gear transmission set is arranged between the first support shaft 20 and the second support shaft 22. A second gear 23 meshing with the first gear 9 is provided on the second support shaft 22. Therefore, when the discharge plate 15 slides upward, it drives the fixed plate 16 and the transmission rod 17 to move upward respectively, and the first worm 18 also moves upward along with the transmission rod 17. When the first worm 18 moves upward, it drives the first turbine 19 to rotate, and then drives the first support shaft 20, the first bevel gear transmission set, the second support shaft 22 and the second gear 23 to move in sequence. Finally, the second gear 23 drives the first gear 9 to rotate. Therefore, the seeding and fertilizing machine disclosed in the present invention can evenly spread the fertilizer around the seeds while seeding.

[0032] To control the seeding quantity during each seeding, a circular seed baffle is further arranged between the seed hopper 6 and the seed guide cylinder 7 disclosed in this embodiment. The seed baffle is rotatably connected to the mounting substrate 1. A first opening 24 allowing seeds to pass through is provided on the seed baffle. The center line of the first opening 24 is not collinear with the center line of the seed baffle. A seed conduit 26 is further arranged in the seed guide cylinder 7. In the initial position, the first opening 24 is misaligned with the feed port of the seed conduit 26. When the seed baffle rotates by a certain angle, the first opening 24 is communicated with the feed port of the seed conduit 26. A third gear 27 is further provided at the upper end of the second support shaft 22. A fourth gear 28 meshing with the third gear 27 is provided on the outer ring of the seed baffle. In the initial position, the seed baffle seals the bottom of the seed baffle so that the seeds are stored in the seed baffle. When seeding, when it pierces into the discharge nozzle 8, the second support shaft 22 starts to rotate. Therefore, the third gear 27 provided on the second support shaft 22 drives the fourth gear 28 to rotate by a certain angle. Therefore, the fourth gear 28 drives the seed baffle to rotate by a certain angle, so that the first opening 24 on the seed baffle is communicated with the feed port of the seed conduit 26. At this time, the seeds fall and are finally sown into the soil.

[0033] The fertilizer application mechanism disclosed in this embodiment includes a fertilizer hopper 3, a fertilizer guide tube 4, and a fertilizer discharge nozzle 5 that are connected in sequence from top to bottom. The fertilizer hopper 3 is fixed on one of the mounting holes 2. During use, fertilizers are stored in the fertilizer hopper 3, and then the fertilizers pass through the fertilizer guide tube 4 and the fertilizer discharge nozzle 5 in sequence and fall on the ground surface. Both the seed discharge nozzle 8 and the fertilizer discharge nozzle 5 include a first sample outlet nozzle 29 and a second sample outlet nozzle 30. The first sample outlet nozzle 29 is hinged on one side of the discharge port of the seed guide tube 7 or the fertilizer guide tube 4, and the second sample outlet nozzle 30 is fixed on the other side of the discharge port of the seed guide tube 7 or the fertilizer guide tube 4. When the first sample outlet nozzle 29 and the second sample outlet nozzle 30 are closed, they form a conical seed discharge nozzle 8 and fertilizer discharge nozzle 5. A lifting assembly for pulling the first sample outlet nozzle 29 to move is provided on the side wall of the seed guide tube 7 or the fertilizer guide tube 4. Specifically, the lifting assembly includes a wire installation plate 31 provided on the seed guide tube 7 or the fertilizer guide tube 4, and also includes a sliding handle 32 slidably provided on the seed guide tube 7 or the fertilizer guide tube 4. The wire installation plate 31 is located above the sliding handle 32, and a second spring 33 is further provided between the wire installation plate 31 and the sliding handle 32. A wire 34 is connected to the wire installation plate 31, and the other end of the wire 34 is connected to the first sample outlet nozzle 29. Therefore, in order to enable the seeds or fertilizers to fall smoothly from the seed discharge nozzle 8 and the fertilizer discharge nozzle 5, it is necessary to press the sliding handle 32 so that the sliding handle 32 slides up a certain distance along the side wall of the seed guide tube 7 or the fertilizer guide tube 4. When sliding up, the hinged first sample outlet nozzle 29 is driven by the wire 34 to open, so that the seeds or fertilizers can come out smoothly.

[0034] In order to control the discharge amount of fertilizer each time, a circular fertilizer baffle is provided between the fertilizer hopper 3 and the fertilizer guide tube 4 disclosed in this embodiment. A second opening 25 allowing fertilizer to pass through is provided on the fertilizer baffle. The center line of the second opening 25 is not collinear with the center line of the fertilizer baffle. A fertilizer conduit 14 is also provided inside the fertilizer guide tube 4. In the initial position, the second opening 25 is misaligned with the feed inlet of the fertilizer conduit 14. When the fertilizer baffle rotates by a certain angle, the second opening 25 communicates with the feed inlet of the fertilizer baffle. Further, a vertically upward second worm 35 is provided on a sliding handle 32 located on the fertilizer guide tube 4. A second worm gear 36 meshing with the second worm 35 is provided on one side of the fertilizer guide tube 4. It also includes a third support shaft 37 for supporting the rotation of the second worm gear 36. The third support shaft 37 is horizontally fixed on the fertilizer guide tube 4 through a second support plate 38. A fourth support shaft 38 perpendicular to the third support shaft 37 is also provided on the second support plate 38. A second bevel gear transmission group is provided between the fourth support shaft 38 and the third support shaft 37. A fifth gear 39 is provided on the fourth support shaft 38. A sixth gear 40 meshing with the fifth gear 39 is provided on the outer circle of the fertilizer baffle. Therefore, when pressing a sliding handle 32 on the fertilizer guide tube 4 to slide upward during fertilization, the second worm 35 connected to the sliding handle 32 also moves upward. When the second worm 35 moves upward, it drives the second worm gear 36 to rotate, and then drives the third support shaft 37, the second bevel gear transmission group, the fourth support shaft 38, and the fifth gear 39 to act in sequence. Finally, the fifth gear 39 drives the sixth gear 40 to rotate. When the sixth gear 40 rotates, it drives the circular fertilizer baffle to rotate by a certain angle. Therefore, the second opening 25 on the fertilizer baffle communicates with the feed inlet of the fertilizer baffle, and finally the fertilizer in the fertilizer hopper 3 smoothly drops.

[0035] The above-described embodiments are only the preferred specific embodiments of the present invention, and the protection scope of the present invention is not limited thereto. Any simple changes or equivalent replacements of the technical solutions that can be obtained by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope of the present invention.

Claims

1. An agricultural fertilizer and seed sowing machine, comprising a mounting substrate (1), and two mounting holes (2) are provided on the mounting substrate (1), characterized in that, It further includes: A fertilizing mechanism, which is disposed through one of the mounting holes (2); A seeding mechanism, including a seed hopper (6), a seed guide tube (7), and a seed discharge nozzle (8) that are connected in sequence from top to bottom. The seed hopper (6) is disposed on the other mounting hole (2). The seed discharge nozzle (8) is of a conical structure and can penetrate into the soil; A fertilizer dispersing mechanism, including a first gear (9), a connecting rod (10), and a dispersing harrow (11) that are rotatably disposed on the seed guide tube (7). The connecting rod (10) is obliquely disposed on the lower end surface of the first gear (9), and the dispersing harrow (11) is disposed on the connecting rod (10); A transmission structure, including a mounting plate (12), a first spring (13), an annular discharge plate (15), and a fixing plate (16). The mounting plate (12) is fixed on the side wall of the seed guide tube (7). The discharge plate (15) is sleeved on the seed discharge nozzle (8). The fixing plate (16) and the discharge plate (15) are horizontally connected. The mounting plate (12) and the fixing plate (16) are connected by a spring (13). A transmission component is disposed between the discharge plate (15) and the first gear (9).

2. The agricultural fertilizer and seed sower according to claim 1, characterized in that, The transmission component includes a transmission rod (17) vertically disposed on the fixing plate (16). A first worm (18) is disposed at the upper end of the transmission rod (17). A first turbine (19) meshing with the first worm (18) is further disposed on one side of the seed guide tube (7). A first support shaft (20) for supporting the rotation of the first turbine (19) is also included. The first support shaft (20) is horizontally fixed on the seed guide tube (7) through a first support plate (21). A second support shaft (22) perpendicular to the first support shaft (20) is further disposed on the first support plate (21). A first bevel gear transmission set is disposed between the first support shaft (20) and the second support shaft (22). A second gear (23) meshing with the first gear (9) is disposed on the second support shaft (22).

3. The agricultural fertilizer and seed drill according to claim 2, characterized in that, A circular seed baffle is further disposed between the seed hopper (6) and the seed guide tube (7). The seed baffle is rotatably connected to the mounting substrate (1). A first opening (24) allowing seeds to pass through is disposed on the seed baffle. The center line of the first opening (24) is not collinear with the center line of the seed baffle. A seed conduit (26) is further disposed in the seed guide tube (7). In the initial position, the first opening (24) is misaligned with the feed port of the seed conduit (26). When the seed baffle rotates by a certain angle, the first opening (24) is communicated with the feed port of the seed conduit (26).

4. An agricultural fertilizer and seed drill according to claim 3, characterized in that, A third gear (27) is further disposed at the upper end of the second support shaft (22). A fourth gear (28) meshing with the third gear (27) is disposed on the outer ring of the seed baffle.

5. An agricultural fertilizer and seed drill according to claim 1, characterized in that, The fertilizer application mechanism includes a fertilizer hopper (3), a fertilizer guide tube (4), and a fertilizer discharge nozzle (5) that are connected in sequence from top to bottom. The fertilizer hopper (3) is fixed on one of the mounting holes (2).

6. An agricultural fertilizer and seed drill according to claim 5, characterized in that, The seed discharge nozzle (8) and the fertilizer discharge nozzle (5) both include a first sample discharge nozzle (29) and a second sample discharge nozzle (30). The first sample discharge nozzle (29) is hinged on one side of the discharge port of the seed guide tube (7) or the fertilizer guide tube (4), and the second sample discharge nozzle (30) is fixed on the other side of the discharge port of the seed guide tube (7) or the fertilizer guide tube (4). When the first sample discharge nozzle (29) and the second sample discharge nozzle (30) are closed, the conical seed discharge nozzle (8) and fertilizer discharge nozzle (5) are formed. A lifting assembly for pulling the first sample discharge nozzle (29) to act is provided on the side wall of the seed guide tube (7) or the fertilizer guide tube (4).

7. An agricultural fertilizer and seed sower according to claim 6, characterized in that, The lifting assembly includes a lifting wire mounting plate (31) provided on the seed guide tube (7) or the fertilizer guide tube (4), and further includes a sliding handle (32) slidably provided on the seed guide tube (7) or the fertilizer guide tube (4). The lifting wire mounting plate (31) is located above the sliding handle (32). A second spring (33) is further provided between the lifting wire mounting plate (31) and the sliding handle (32). A lifting wire (34) is connected to the lifting wire mounting plate (31), and the other end of the lifting wire (34) is connected to the first sample discharge nozzle (29).

8. The agricultural fertilizer and seed sower according to claim 7, characterized in that, A circular fertilizer baffle is provided between the fertilizer hopper (3) and the fertilizer guide tube (4). A second opening (25) allowing fertilizer to pass through is provided on the fertilizer baffle. The center line of the second opening (25) is not collinear with the center line of the fertilizer baffle. A fertilizer conduit (14) is further provided in the fertilizer guide tube (4). In the initial position, the second opening (25) is misaligned with the inlet of the fertilizer conduit (14). When the fertilizer baffle rotates by a certain angle, the second opening (25) is communicated with the inlet of the fertilizer baffle.

9. An agricultural fertilizer and seed sower according to claim 8, characterized in that, A second worm (35) vertically upward is further provided on one of the sliding handles (32) located on the fertilizer guide tube (4). A second worm gear (36) meshing with the second worm (35) is provided on one side of the fertilizer guide tube (4). It further includes a third support shaft (37) for supporting the rotation of the second worm gear (36). The third support shaft (37) is horizontally fixed on the fertilizer guide tube (4) through a second support plate (38). A fourth support shaft (38) perpendicular to the third support shaft (37) is further provided on the second support plate (38). A second bevel gear transmission group is provided between the fourth support shaft (38) and the third support shaft (37). A fifth gear (39) is provided on the fourth support shaft (38). A sixth gear (40) meshing with the fifth gear (39) is provided on the outer ring of the fertilizer baffle.

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