Seed and fertilizer simultaneous sowing device capable of promoting root growth of saline-alkali soil in cotton seedling stage

Abstract

The utility model discloses a seed and fertilizer simultaneous sowing device capable of promoting root growth and salt resistance in a saline-alkali soil cotton seedling stage, which relates to the technical field of seed sowing and comprises a fixing disc, a fertilizer bin is fixedly mounted on the side wall of the fixing disc, and a fertilizer outlet is fixedly mounted at the bottom of the fertilizer bin. The bottom of the fertilizer outlet is fixedly connected with a fertilizer connecting pipe, the bottom of the fertilizer connecting pipe is fixedly connected with a seed and fertilizer simultaneous sowing mechanism, the seed and fertilizer simultaneous sowing mechanism comprises a fertilizer feeding pipe fixedly connected to the bottom of the fertilizer connecting pipe, a sliding block is fixedly installed at the bottom of the fertilizer feeding pipe, and a conical plate is fixedly installed at the bottom of the sliding block; according to the seed and fertilizer simultaneous sowing mechanism, the relative position of the fertilizer and the seeds can be accurately controlled, the fertilizer is prevented from being in direct contact with the seeds, 'seedling burning 'is effectively prevented, meanwhile, contact of the fertilizer and seedling root systems can be guaranteed, the seedling rate of cotton is increased, and growth and nutrient absorption of the root systems in the seedling stage of the cotton are promoted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the seed sowing technical field, specifically is a kind of seed fertilizer same sowing device that can promote saline-alkali soil cotton seedling stage root system growth. BACKGROUND

[0002] As a reserve arable land resource, saline-alkali soil has broad utilization prospects. However, its high saline-alkali environment poses a severe challenge to cotton growth. During the cotton seedling stage, salt stress can lead to limited root development, insufficient nutrient supply and weakened stress resistance, ultimately restricting yield improvement.

[0003] In the traditional saline-alkali soil cultivation method, excessive fertilization can easily lead to further accumulation of soil salt, which not only affects the absorption of water and nutrients by cotton roots, but also can directly damage the roots, reducing the stress resistance and survival rate of cotton.

[0004] In the prior art, fertilizer base application or drip application can improve soil fertility and supply nutrients to cotton to some extent, but it is difficult to play a role during the seedling stage. There are three technical problems: first, the supply intensity of fertilizer base application is not enough, and the cotton roots have weak absorption capacity during the seedling stage, making it difficult to absorb enough nutrients; second, the current production mode is concentrated, and the fertilizer brought in by the emergence water is insufficient to meet the crop demand; third, it is difficult to accurately control the relative position of fertilizer and seeds, often leading to direct contact between fertilizer and seeds, causing "burning seedlings", or the fertilizer and seeds are too far apart to play a role.

[0005] In addition, due to the large difference in soil properties of saline-alkali soil, the existing device cannot adjust the intensity of seed and fertilizer application into the soil according to the properties of different soils, leading to the fact that in soft soil, seeds and fertilizers may not be applied to the appropriate soil layer, while in soil with large soil clumps, effective seeding and fertilization may not be achieved due to the failure of the seed and fertilizer same sowing device to work normally.

[0006] Therefore, the present application is proposed. UTILITY MODEL CONTENT

[0007] The utility model aims to provide a seed fertilizer same sowing device that can promote the growth of cotton root system during the seedling stage in saline-alkali soil to solve the problems raised in the background art.

[0008] To solve the above technical problems, the utility model provides a kind of seed fertilizer same sowing device of promoting saline-alkali soil cotton seedling stage root system growth, seed bin is fixedly installed in the fixed disc lateral wall, seed bin bottom is fixedly installed with seed discharge gate, the seed discharge gate bottom is fixedly connected with the feeding pipe, the feeding pipe end away from seed discharge gate is fixedly connected with fixed column, the fixed disc is fixedly installed with fertilizer bin in the lateral wall away from seed bin, fertilizer bin bottom is fixedly installed with fertilizer discharge gate, the fertilizer discharge gate bottom is fixedly connected with fertilizer connecting pipe, and the fertilizer connecting pipe bottom is fixedly connected with seed fertilizer same sowing mechanism;

[0009] Seed fertilizer same sowing mechanism includes the fertilizer feed pipe fixedly connected in the fertilizer connecting pipe bottom, the fertilizer feed pipe bottom is fixedly installed with sliding block, the sliding block bottom is fixedly installed with conical plate, the conical plate outer wall is equipped with fertilizer discharge hole, the sliding block outer wall is slidably installed with abutment plate, the abututment plate inner wall is rotatably installed with connecting ring, the connecting ring top is rotatably installed with L-shaped connecting rod, the L-shaped connecting rod end is equipped with connecting hole, and the connecting hole inner wall is rotatably connected with the fertilizer feed pipe outer wall.

[0010] Further, the connecting ring inner wall is fixedly installed with support rod, the support rod other end is fixedly installed with threaded ring, and the connecting ring, threaded ring, support rod are provided with limit post, and the limit post is fixedly installed at the abutment plate top center.

[0011] Further, the fixed disc lateral wall is fixedly installed with stroke adjusting mechanism;

[0012] Stroke adjusting mechanism includes motor fixedly installed in the fixed disc lateral wall, the motor drive end is fixedly installed with rotary disc, the rotary disc lateral wall is equipped with trapezoidal slot, the trapezoidal slot inner wall is slidably installed with trapezoidal plate, the trapezoidal plate lateral wall is fixedly installed with driven disc, the trapezoidal plate inner wall is threadedly connected with screw rod, the screw rod outer wall is threadedly installed with fixed plate, and the fixed plate outer wall is fixedly connected with the trapezoidal slot inner wall end.

[0013] Further, the driven disc lateral wall away from trapezoidal plate is rotatably installed with reciprocating plate, the reciprocating plate lateral wall is fixedly installed with fixed column, and the fixed column inner wall is rotatably installed with threaded column.

[0014] Further, the fixed disc bottom is fixedly installed with limit plate, the limit plate inner wall is equipped with limit slot, and the limit slot inner wall is slidably connected with the reciprocating plate lateral wall.

[0015] Further, the fixed disc lateral wall away from fertilizer bin is fixedly installed with seed bin, the seed bin bottom is fixedly installed with seed discharge gate, and the seed discharge gate bottom is fixedly connected with the feeding pipe, and the feeding pipe end away from seed discharge gate is fixedly connected with fixed column.

[0016] Further, the connecting hole inner wall is fixedly installed with a rotating ring, the rotating ring bottom is slidably installed with a sealing plate, the sealing plate end inner wall is rotatably installed with a rotating shaft one, the rotating shaft one outer wall is fixedly installed with an arc-shaped connecting rod, the arc-shaped connecting rod end away from the rotating shaft one is fixedly installed with a rotating shaft two, the rotating shaft two outer wall is rotatably installed with a fixed ring, and the fixed ring bottom is fixedly connected with the fertilizer feeding pipe top.

[0017] Further, the fixed disc inner wall is provided with a threaded hole, the fixed plate top is fixedly installed with a rotating knob, and the resisting plate inner wall is provided with a sliding groove.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The seed and fertilizer sowing mechanism can control the relative position of the fertilizer and the seed, avoids direct contact of the fertilizer with the seed, effectively prevents "seedling burning", and guarantees sufficient nutrient supply and promotes cotton root growth.

[0020] 2. The position of the trapezoidal plate in the trapezoidal groove is driven by the screw rod, the sowing and fertilizing mechanism insertion intensity into the soil can be flexibly adjusted according to the soil properties, the insertion intensity can be reduced in soft soil to avoid compacting the soil, and the insertion intensity can be increased in hard soil to ensure that the seed and the fertilizer can penetrate into the soil, so that the device can realize effective sowing and fertilizing in different types of saline-alkali soil. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front structure schematic view of a seed and fertilizer sowing device capable of promoting cotton seedling stage root growth in saline-alkali soil.

[0022] Figure 2 It is an explosion structure schematic view of a stroke adjusting mechanism of a seed and fertilizer sowing device capable of promoting cotton seedling stage root growth in saline-alkali soil.

[0023] Figure 3 It is an explosion structure schematic view of a seed and fertilizer sowing mechanism of a seed and fertilizer sowing device capable of promoting cotton seedling stage root growth in saline-alkali soil.

[0024] Figure 4 It is Figure 1 It is an enlarged structure schematic view of position A in the middle.

[0025] Figure 5 It is an explosion structure schematic view of a sealing plate of a seed and fertilizer sowing device capable of promoting cotton seedling stage root growth in saline-alkali soil.

[0026] In the figure: 1, fixed disc; 2, threaded hole; 3, knob; 4, driven disc; 5, seed bin; 6, fertilizer bin; 7, reciprocating plate; 8, limiting plate; 9, feeding pipe; 10, fertilizer discharge port; 11, fertilizer connecting pipe; 12, seed discharge port; 13, fixed column; 14, stop plate; 15, conical plate; 16, fixed plate; 17, screw; 18, rotating disc; 19, trapezoidal groove; 20, motor; 21, limiting groove; 22, trapezoidal plate; 23, chute; 24, limiting column; 25, connecting ring; 26, threaded ring; 27, L-shaped connecting rod; 28, connecting hole; 29, support rod; 30, sliding block; 31, fertilizer feeding pipe; 32, fertilizer discharge hole; 33, sealing plate; 34, rotating ring; 35, arc-shaped connecting rod; 36, rotating shaft I; 37, rotating shaft II; 38, fixed ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figure 1 Figure 5 The utility model provides a kind of technical scheme: a kind of seed fertilizer same sowing device that can promote saline-alkali soil cotton seedling stage root system growth, including fixed disc 1, seed bin 5 is fixedly installed in the side wall of fixed disc 1, seed bin 5 bottom is fixedly installed with seed discharge port 12, seed discharge port 12 bottom is fixedly connected with feeding pipe 9, feeding pipe 9 is fixedly connected with fixed column 13 in the end away from seed discharge port 12, the side wall of fixed disc 1 away from seed bin 5 is fixedly installed with fertilizer bin 6, fertilizer bin 6 bottom is fixedly installed with fertilizer discharge port 10, fertilizer discharge port 10 bottom is fixedly connected with fertilizer connecting pipe 11, and fertilizer connecting pipe 11 bottom is fixedly connected with seed fertilizer same sowing mechanism;

[0029] Seed fertilizer same sowing mechanism includes fertilizer feeding pipe 31 fixedly connected in the bottom of fertilizer connecting pipe 11, fertilizer feeding pipe 31 bottom is fixedly installed with sliding block 30, sliding block 30 bottom is fixedly installed with conical plate 15, fertilizer discharge hole 32 is formed in the outer wall of conical plate 15, stop plate 14 is slidably installed on the outer wall of sliding block 30, connecting ring 25 is rotatably installed on the inner wall of stop plate 14, L-shaped connecting rod 27 is rotatably installed on the top of connecting ring 25, connecting hole 28 is formed in the end of L-shaped connecting rod 27, and the outer wall of fertilizer feeding pipe 31 is rotatably connected with the inner wall of connecting hole 28.

[0030] ​It should be noted that the travel adjusting mechanism starts to work, and the seed and fertilizer simultaneous seeding mechanism is pressed downward as a whole, and with the gradual entry of the conical plate 15 into the soil, the abutting plate 14 contacts and abuts against the surface of the soil. When the abutting plate 14 abuts against the soil, the threaded column starts to press downward and rotate, driving the threaded ring 26 to rotate, and the L-shaped connecting rod 27 gradually expands under the driving of the connecting ring 25. The expanded L-shaped connecting rod 27 drives the conical plate 15 to move outward through the sliding block 30, and pushes the soil away to form a seeding pit;

[0031] Further, when the conical plate 15 is closed, the seeds are vertically arranged inside the fixed column 13. When the conical plate 15 is opened, the seeds fall into the seeding pit, and the rotation of the L-shaped connecting rod 27 drives the rotating ring 34 to rotate to open the sealing plate 33, so that the fertilizer enters the inside of the conical plate 15 and is discharged from the fertilizer discharge hole 32, realizing the synchronization of seeding and fertilizing;

[0032] Further, after completing seeding and fertilizing, the travel adjusting mechanism drives the seed and fertilizer simultaneous seeding mechanism to move upward, further drives the threaded column to rotate in reverse, drives the L-shaped connecting rod 27 to gradually retract, drives the conical plate 15 to shrink inward and move upward. In the process of retracting and moving upward of the conical plate 15, the soil in the pit buries the seeds, and the soil above the fertilizer is concentrated below the seeds under the guidance of the conical plate, so that the soil after fertilizing enters below the seeds to form a suitable soil environment for the growth of the seeds.

[0033] Further, by controlling the expansion and shrinkage of the conical plate 15 and the opening and closing of the fertilizer discharge hole 32, the release amount of the fertilizer and the seeding position of the seeds can be accurately controlled, which helps to reduce the waste of fertilizer, improve the utilization rate of fertilizer, and avoid the phenomenon of "burning seedlings".

[0034] Please refer to Figure 3 The utility model provides a technical scheme: a seed and fertilizer simultaneous seeding device capable of promoting the root growth of cotton seedlings in saline-alkali soil, which comprises a connecting ring 25, a threaded ring 26 and a support rod 29.

[0035] It should be noted that the combination of the limiting column 24, the connecting ring 25, the threaded ring 26 and the support rod 29 forms a transmission and positioning system. During the operation of the device, the limiting column 24 can prevent the connecting ring 25 and the threaded ring 26 from deviating or mispositioning during rotation, ensuring the stability and accuracy of the entire transmission system.

[0036] Please refer to Figure 2 The utility model provides a technical scheme: a seed and fertilizer simultaneous seeding device capable of promoting the root growth of cotton seedlings in saline-alkali soil, which comprises a connecting ring 25, a threaded ring 26 and a support rod 29.

[0037] The stroke adjusting mechanism comprises a motor 20 fixedly installed on the side wall of the fixed disc 1, a rotating disc 18 fixedly installed at the driving end of the motor 20, a trapezoidal groove 19 formed in the side wall of the rotating disc 18, a trapezoidal plate 22 slidably installed in the inner wall of the trapezoidal groove 19, a driven disc 4 fixedly installed on the side wall of the trapezoidal plate 22, a screw rod 17 threadedly connected to the inner wall of the trapezoidal plate 22, and a fixed plate 16 threadedly installed on the outer wall of the screw rod 17 and fixedly connected to the end of the inner wall of the trapezoidal groove 19.

[0038] It should be noted that when the force of the seed and fertilizer drilling mechanism inserted into the soil needs to be adjusted, the operator can rotate the screw rod 17, since the screw rod 17 is threadedly connected to the inner wall of the trapezoidal plate 22, rotating the screw rod 17 will push the trapezoidal plate 22 to slide in the trapezoidal groove 19, and the rotation point of the driven disc 4 changes.

[0039] Further, the seed and fertilizer drilling mechanism can maintain an appropriate force when inserted into different types of soil. For harder soil, the insertion force can be increased to ensure that the seeds and fertilizers can penetrate into the soil. For softer soil, the insertion force can be reduced to avoid excessive compaction of the soil.

[0040] Please refer to Figure 2 The utility model provides a kind of technical scheme: a kind of seed and fertilizer drilling device that can promote the root system growth of cotton seedling in saline-alkali soil, including the side wall of trapezoidal plate 22 away from driven disc 4 rotating installation has reciprocating plate 7, reciprocating plate 7 side wall fixed installation has fixed column 13, fixed column 13 inner wall rotating installation has screw column.

[0041] Please refer to Figure 2 The utility model provides a kind of technical scheme: a kind of seed and fertilizer drilling device that can promote the root system growth of cotton seedling in saline-alkali soil, including the bottom of fixed disc 1 fixed installation has limit plate 8, limit slot 21 is formed in the inner wall of limit plate 8, and the inner wall of limit slot 21 is slidably connected with the side wall of reciprocating plate 7.

[0042] It should be noted that the design of limit slot 21 provides clear trajectory restriction for the movement of reciprocating plate 7. It ensures that reciprocating plate 7 can only move in the up-down direction, avoiding unnecessary horizontal or rotational movement.

[0043] Please refer to Figure 1 The utility model provides a kind of technical scheme: a kind of seed and fertilizer drilling device that can promote the root system growth of cotton seedling in saline-alkali soil, including the side wall of fixed disc 1 away from fertilizer bin 6 fixed installation has seed bin 5, seed bin 5 bottom fixed installation has seed discharge port 12, and seed discharge port 12 bottom fixed connection has feeding pipe 9, and the end of feeding pipe 9 away from seed discharge port 12 is fixedly connected with fixed column 13.

[0044] It should be noted that the seed bin 5 is directly fixed on the side wall of the fixed disc 1, and such a layout makes the whole device structure more compact, and the compact design of the seed discharge port 12 and the feeding pipe 9 further optimizes the space utilization of the device.

[0045] Please refer to Figure 4 、 Figure 5 The utility model provides a technical scheme: a kind of seed fertilizer same sowing device that can promote saline-alkali soil cotton seedling stage root system growth, including the rotating ring 34 being fixedly installed in the inner wall of connecting hole 28, the rotating ring 34 bottom slidingly installed has sealing plate 33, the rotating shaft one 36 is rotatably installed in sealing plate 33 end inner wall, the arc link 35 is fixedly installed on the outer wall of rotating shaft one 36, the arc link 35 is fixedly installed with rotating shaft two 37 in the end away from rotating shaft one 36, the fixed ring 38 is rotatably installed on the outer wall of rotating shaft two 37, and the fixed ring 38 bottom is fixedly connected with fertilizer feeding pipe 31 top.

[0046] It should be noted that when L-shaped connecting rod 27 is subjected to external force, rotating ring 34 is rotated, and then arc link 35 is rotated along with the rotation of rotating ring 34, which pushes sealing plate 33 to slide at the bottom of rotating ring 34 through rotating shaft one 36 and rotating shaft two 37, gradually opens connecting hole 28, allows fertilizer to enter seeding mechanism from fertilizer feeding pipe 31, when sealing plate 33 is completely opened, fertilizer starts to flow out from fertilizer feeding pipe 31, and enters into conical plate 15 through connecting hole 28, when seeding and fertilizing operation is completed, L-shaped connecting rod 27 is reversely rotated under the action of external driving mechanism, drives arc link 35 to reset, and arc link 35 pulls sealing plate 33 back to the initial position through rotating shaft one 36 and rotating shaft two 37, closes connecting hole 28.

[0047] Please refer to Figure 1 、 Figure 2 、 Figure 3 The utility model provides a technical scheme: a kind of seed fertilizer same sowing device that can promote saline-alkali soil cotton seedling stage root system growth, including the screw hole 2 being set in the inner wall of fixed disc 1, the rotating knob 3 is fixedly installed on the top of fixed plate 16, the sliding slot 23 is set in the inner wall of resisting plate 14, and the sliding block 30 is slidably connected with the inner wall of sliding slot 23.

[0048] Working principle: through the rotation of screw 17, the trapezoidal plate 22 can be pushed to slide in the trapezoidal groove 19, so as to change the rotation point of the driven disc 4, and then adjust the force of the seed and fertilizer simultaneous seeding mechanism inserted into the soil. At this time, the seed and fertilizer simultaneous seeding mechanism is pressed into the soil, the conical plate 15 gradually enters the soil, the resistance plate 14 contacts and resists the soil surface, the L-shaped connecting rod 27 starts to gradually expand through the transmission of the connecting ring 25 and the threaded ring 26, the expanded L-shaped connecting rod 27 drives the conical plate 15 to move outward through the sliding block 30, and the soil is pushed away to form a seeding pit. The rotation of the L-shaped connecting rod 27 also drives the rotating ring 34 to rotate, so that the sealing plate 33 is opened, the fertilizer enters the inside of the conical plate 15 from the fertilizer feeding pipe 31, and is discharged from the fertilizer discharge hole 32, realizing fertilization.

Claims

1. A kind of seed fertilizer same sowing device that can promote saline-alkali soil cotton seedling root growth, including fixed disc (1), it is characterized in that: The side wall of the fixed disc (1) is fixedly installed with a seed bin (5), the bottom of the seed bin (5) is fixedly installed with a seed discharge port (12), the bottom of the seed discharge port (12) is fixedly connected with a feeding pipe (9), the end of the feeding pipe (9) away from the seed discharge port (12) is fixedly connected with a fixed column (13), the side wall of the fixed disc (1) away from the seed bin (5) is fixedly installed with a fertilizer bin (6), the bottom of the fertilizer bin (6) is fixedly installed with a fertilizer discharge port (10), the bottom of the fertilizer discharge port (10) is fixedly connected with a fertilizer connecting pipe (11), and the bottom of the fertilizer connecting pipe (11) is fixedly connected with a seed and fertilizer simultaneous sowing mechanism. The seed and fertilizer simultaneous sowing mechanism comprises a fertilizer feeding pipe (31) fixedly connected to the bottom of the fertilizer connecting pipe (11), a sliding block (30) fixedly installed at the bottom of the fertilizer feeding pipe (31), a tapered plate (15) fixedly installed at the bottom of the sliding block (30), a fertilizer discharge hole (32) formed in the outer wall of the tapered plate (15), a resisting plate (14) slidingly installed on the outer wall of the sliding block (30), a connecting ring (25) rotatably installed on the inner wall of the resisting plate (14), an L-shaped connecting rod (27) rotatably installed at the top of the connecting ring (25), and a connecting hole (28) formed in the end of the L-shaped connecting rod (27), wherein the inner wall of the connecting hole (28) is rotatably connected with the outer wall of the fertilizer feeding pipe (31).

2. The seed-fertilizer drilling device capable of promoting the growth of cotton root system in the seedling stage in saline-alkali soil according to claim 1, characterized in that: A supporting rod (29) is fixedly installed on the inner wall of the connecting ring (25), and a threaded ring (26) is fixedly installed on the other end of the supporting rod (29). A limiting column (24) is arranged between the connecting ring (25), the threaded ring (26) and the supporting rod (29), and the limiting column (24) is fixedly installed at the top center of the resisting plate (14).

3. The seed-fertilizer drilling device of claim 1, wherein the device comprises a seed-fertilizer drilling device capable of promoting the growth of cotton root system in saline-alkali soil. The side wall of the fixed disc (1) is fixedly installed with a stroke adjusting mechanism. The stroke adjusting mechanism comprises a motor (20) fixedly installed on the side wall of the fixed disc (1), a rotating disc (18) fixedly installed at the driving end of the motor (20), a trapezoidal groove (19) formed in the side wall of the rotating disc (18), a trapezoidal plate (22) slidingly installed on the inner wall of the trapezoidal groove (19), a driven disc (4) fixedly installed on the side wall of the trapezoidal plate (22), a screw rod (17) threadedly connected to the inner wall of the trapezoidal plate (22), a fixed plate (16) threadedly installed on the outer wall of the screw rod (17), and the outer wall of the fixed plate (16) is fixedly connected with the end of the inner wall of the trapezoidal groove (19).

4. The seed-fertilizer drilling device of claim 3, wherein the device comprises a seed-fertilizer drilling device capable of promoting the growth of cotton root system in saline-alkali soil. A reciprocating plate (7) is rotatably installed on the side wall of the driven disc (4) away from the trapezoidal plate (22), a fixed column (13) is fixedly installed on the side wall of the reciprocating plate (7), and a threaded column is rotatably installed in the inner wall of the fixed column (13).

5. The seed-fertilizer drilling device of claim 1, wherein the device comprises a seed-fertilizer drilling device capable of promoting the growth of cotton root system in saline-alkali soil. A limiting plate (8) is fixedly installed at the bottom of the fixed disc (1), a limiting groove (21) is formed in the inner wall of the limiting plate (8), and the side wall of the reciprocating plate (7) is slidingly connected with the inner wall of the limiting groove (21).

6. The seed-fertilizer drilling device of claim 1, wherein the device comprises a seed-fertilizer drilling device capable of promoting the growth of cotton root system in saline-alkali soil. The inner wall of the connecting hole (28) is fixedly installed with a rotating ring (34), the bottom of the rotating ring (34) is slidably installed with a sealing plate (33), the end of the sealing plate (33) is rotatably installed with a rotating shaft (36), the outer wall of the rotating shaft (36) is fixedly installed with an arc-shaped connecting rod (35), one end of the arc-shaped connecting rod (35) away from the rotating shaft (36) is fixedly installed with a rotating shaft (37), and the outer wall of the rotating shaft (37) is rotatably installed with a fixed ring (38), and the bottom of the fixed ring (38) is fixedly connected with the top of the fertilizer feeding pipe (31).

7. The seed-fertilizer drilling device of claim 3, wherein the device comprises a seed fertilizer drilling device capable of promoting the growth of cotton root system in saline-alkali soil. The inner wall of the fixed disc (1) is provided with a threaded hole (2), the top of the fixed plate (16) is fixedly installed with a rotating knob (3), the inner wall of the resisting plate (14) is provided with a sliding groove (23), and the inner wall of the sliding groove (23) is slidably connected with a sliding block (30).

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