Soil conditioning and improving device for saline-alkali soil

Abstract

The invention discloses a soil conditioning and improving device for saline-alkali soil, and relates to the field of soil conditioning and improvement, the soil conditioning and improving device comprises a moving frame, front driving wheels are symmetrically mounted at the front part of the moving frame, rear supporting wheels are symmetrically mounted at the tail part of the moving frame, and a soil breaking and permeation enhancing module is arranged at the front end part of the moving frame and is used for loosening the saline-alkali soil; the soil breaking and permeation enhancing module comprises a front fixing frame, the front fixing frame is fixedly installed at the front end of the movable frame, a supporting shaft is rotationally installed at the bottom of one side of the front fixing frame, a plurality of ridge smashing cutters are fixedly connected to the outer surface of the supporting shaft, and guiding sliding grooves are formed in the front end edge and the rear end edge of the front fixing frame; subsoiling shovels and ridge smashing cutters in the soil breaking and permeation enhancing module are matched in a staggered mode, synchronous soil loosening and smashing are achieved under driving of a first driving part, meshing transmission of a driving rack plate and a driven gear ensures movement coordination of the driving rack plate and the driven gear, a soil plow pan is effectively broken, soil permeability is improved, and the soil breaking and permeation enhancing effects are achieved. The problems of heavy saline-alkali soil structure and difficult plough layer desalination are solved.

Description

Technical Field

[0001] The invention relates to a soil conditioning and improvement technology, and in particular to a soil conditioning and improvement device for saline-alkali soil. Background Art

[0002] Improvement of saline-alkali soils is a crucial issue for sustainable agricultural development, particularly in the irrigated areas south of the Yellow River. These soils face significant challenges, including high salinization, heavy clay content, organic matter deficiency, and low water resource utilization. These issues lead to difficulties in desalting the topsoil, increased secondary salinization, and low agricultural productivity. Existing saline-alkali soil improvement devices integrate deep loosening, irrigation, and fertilization, achieving a degree of coordinated improvement. Traditional improvement methods also encompass single operations such as deep loosening, irrigation, or fertilization, providing fundamental technical support for saline-alkali soil improvement.

[0003] However, the existing technology has the problem of single functional limitation. Even the integrated device lacks the ability to coordinate the regulation of multiple water sources and real-time salinity monitoring, and cannot achieve comprehensive coordinated improvement of "soil, crop, water, fertilizer, and salt"; at the same time, water resource utilization is inefficient, and reliance on large water pressure and salt leads to high irrigation quotas, and a graded utilization mechanism for Yellow River water, groundwater, and recycled water has not been formed, which can easily lead to secondary salinization; and soil improvement and fertilization are not precise, the application ratio of organic materials and conditioners is fixed, and cannot be dynamically adjusted according to soil salinity, and the degree of integration with the deep soil layer is low, the nutrient storage capacity expansion effect is limited, and there is a lack of crop adaptability. The improvement process is disconnected from the planting of salt-alkali-tolerant crops, affecting the production capacity improvement effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a soil conditioning and improvement device for saline-alkali soil, so as to solve the problem of poor efficiency in the conditioning and improvement of saline-alkali soil in the prior art.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a soil conditioning and improvement device for saline-alkali soil, comprising a mobile frame, a front driving wheel symmetrically mounted on the front of the mobile frame, a rear supporting wheel symmetrically mounted on the rear of the mobile frame, and a soil breaking and permeability increasing module provided at the front end of the mobile frame for loosening the saline-alkali soil;

[0006] The soil-breaking and infiltration-increasing module includes a front fixed frame, which is fixedly installed at the front end of the mobile frame, and a support shaft is rotatably installed at the bottom of one side of the front fixed frame, and a plurality of powder ridge knives are fixedly connected to the outer surface of the support shaft. Guide slide grooves are provided on the front and rear ends of the front fixed frame, and a movable frame is movably installed in the guide slide groove inside the front fixed frame, and a plurality of deep loosening shovels are fixedly installed on the upper surface of the movable frame. A first driving part is provided at the middle position of the top of the front fixed frame, and an output end of one side of the first driving part is connected to the movable frame, and the front and rear ends of the movable frame extend to the outside of the front fixed frame and are fixed with an active rack plate, and the front and rear ends of the powder ridge knife extend to the outside of the front fixed frame and a driven gear is installed;

[0007] A material delivery module is provided at the middle of the upper surface of the mobile frame near the front fixed frame, which is used to deliver fertilizer and mix it with the soil to form an improved layer in saline-alkali soil;

[0008] A water and salt control module is also provided on the upper surface of the mobile frame near the tail, which is used for irrigating saline-alkali soil.

[0009] Preferably, the material delivery module includes an organic material bin and a conditioning agent bin, which are fixedly installed in parallel on the upper surface of the mobile frame, the organic material bin stores green manure, and the conditioning agent bin stores microbial agents, and the bottom ends of the organic material bin and the conditioning agent bin extend to the bottom of the mobile frame and are fixedly installed with a number of fixed pipe racks, a connecting support plate is movably installed under the fixed pipe rack, and a buried material pipe is fixedly installed on the upper surface of the connecting support plate extending to the fixed pipe rack, a fixed support plate is provided on the outer surface of the buried material pipe near the bottom of the connecting support plate, and an electromagnetic valve is fixedly installed on the bottom of the outer surface of the buried material pipe, and a lifting mechanism is provided between the organic material bin and the conditioning agent bin for adjusting the placement position of the buried material pipe.

[0010] Preferably, the lifting mechanism includes a positioning support plate, which is fixedly installed between the organic material bin and the conditioner bin near the top of the fixed pipe rack. A fixed inner cavity is opened between the organic material bin and the conditioner bin, and a second driving part is provided inside the fixed inner cavity. A screw is installed at the output end of the lower bottom surface of the second driving part, and the screw is rotatably installed on the upper surface of the positioning support plate. A movable support plate is movably installed on the outer surface of the screw, and both side edges of the bottom end of the movable support plate extend through the positioning support plate to the upper surface of the connecting support plate, and connecting rods are fixedly connected.

[0011] Preferably, a threaded hole is provided through the middle of the top end of the movable support plate, one side of the outer surface of the screw rod is located in the threaded hole, and the screw rod and the threaded hole are adapted to each other.

[0012] Preferably, through holes are provided on both sides of the upper surface of the positioning support plate, the outer diameter of the connecting rod is smaller than the inner diameter of the through hole, one side of the outer surface of the connecting rod is located in the through hole, and the connecting rod and the through hole are embedded in each other.

[0013] Preferably, the water and salt control module includes a water tank, which is fixedly installed in the middle position of the upper surface of the mobile frame, and a plurality of water storage tanks are opened in the middle of the top of the water tank, and a mixing bin is opened at the bottom of the water tank, and a control valve is installed between the water storage tank and the mixing bin. The bottom edge of the mixing bin extends to the bottom of the mobile frame and a No. 1 connecting pipe is symmetrically arranged. The bottom opening of the No. 1 connecting pipe is placed on the lower bottom surface of the mobile frame and an atomizing nozzle is obliquely installed. The tail of the mobile frame is also provided with a salt drainage ditch structure for collecting high-salt wastewater.

[0014] Preferably, the salt drainage ditch structure includes a salt storage box, which is fixedly installed on the upper surface of the mobile frame near the tail, and a tail support frame is welded to the tail of the mobile frame. A number of trench openers are fixedly installed on the bottom of one side of the inner wall of the tail support frame, and a salt delivery trough is opened on one side of the inner wall of the tail support frame near the top of the trench opener, and a No. 2 connecting pipe is fixedly installed on one side of the inner wall of the salt storage box extending to the opening on the upper surface of the salt delivery trough.

[0015] Preferably, a drip irrigation pipe is fixedly installed on the bottom edge of the inner wall of the water storage tank extending to the bottom of the movable frame, and a plurality of drip irrigation heads are arranged at a certain interval on the lower bottom surface of the drip irrigation pipe.

[0016] Preferably, a plurality of teeth are fixedly mounted on the bottom end of the active rack plate, the bottom end of the active rack plate is movable close to the top of the outer surface of the driven gear, and the active rack plate and the driven gear are meshed with each other.

[0017] Preferably, there is a certain gap between two adjacent powder ridge knives and deep loosening shovels, and multiple powder ridge knives and deep loosening shovels are arranged in an interlaced manner.

[0018] Compared with the prior art, the soil conditioning and improvement device for saline-alkali soil provided by the present invention has the following beneficial effects:

[0019] 1. The present invention realizes synchronous soil loosening and crushing under the drive of the first driving part through the staggered coordination of the deep loosening shovel and the powder ridge knife in the soil breaking and infiltration increasing module. The meshing transmission of the active rack plate and the driven gear ensures the coordination of the movements of the two, effectively breaking the soil plow bottom layer, increasing soil permeability, and solving the problems of heavy saline-alkali soil structure and difficult desalination of the plow layer.

[0020] 2. The material delivery module of the present invention adopts a double-bin design, which can accurately control the burial depth of the material in combination with the lifting mechanism. The solenoid valve controls the delivery amount. It can dynamically adjust the ratio of organic material and conditioner according to the salinity of the soil, realize deep and precise fertilization, increase the soil organic matter content and nutrient storage capacity, and solve the problem of inaccurate soil improvement and fertilization.

[0021] 3. The water-salt control module of the present invention integrates atomization spraying, drip irrigation and salt drainage functions. The water storage tank can store different water sources respectively, and the coordinated utilization of multiple water sources can be achieved through the control valve. The atomization nozzle is used for large-area elution and desalination, and the drip irrigation head is used for precise water replenishment of crops. Combined with the salt drainage ditch structure, it can effectively reduce soil salinity, reduce secondary salinization, and improve water resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 Schematic diagram of the bottom structure of the mobile frame of the present invention;

[0025] Figure 3 Schematic diagram of the structure of the fixed pipe rack in the present invention;

[0026] Figure 4 Schematic diagram of the internal structure of the fixed inner cavity in the present invention;

[0027] Figure 5 Schematic diagram of the structure of the atomizing nozzle in the present invention;

[0028] Figure 6 Schematic diagram of the structure of the furrow opener in the present invention;

[0029] Figure 7 Schematic diagram of the structure of the drip irrigation head of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the water storage tank in the present invention.

[0031] Description of reference numerals:

[0032] 1. Mobile frame; 2. Front drive wheel; 3. Rear support wheel; 4. Front fixed frame; 5. Support shaft; 6. Powder ridging knife; 7. Guide chute; 8. Movable frame; 9. Deep loosening shovel; 10. First drive unit; 11. Active rack plate; 12. Driven gear; 13. Organic material bin; 14. Conditioning agent bin; 15. Fixed pipe rack; 16. Connecting support plate; 17. Buried material pipe; 18. Fixed support plate; 19. Electromagnetic Valve; 20. Positioning support plate; 21. Fixed inner cavity; 22. Second drive unit; 23. Screw rod; 24. Movable support plate; 25. Connecting rod; 26. Water storage tank; 27. Water storage trough; 28. Mixing chamber; 29. ​​Connecting pipe No. 1; 30. Atomizing nozzle; 31. Drip irrigation pipe; 32. Drip irrigation head; 33. Salt storage tank; 34. Tail support frame; 35. Furrow opener; 36. Salt transport trough; 37. Connecting pipe No. 2. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] As attached Figure 1 To the attached Figure 8 As shown:

[0035] Example 1:

[0036] The present invention provides a soil conditioning and improvement device for saline-alkali soil, comprising a mobile frame 1, a front driving wheel 2 symmetrically mounted on the front of the mobile frame 1, a rear supporting wheel 3 symmetrically mounted on the rear of the mobile frame 1, and a soil breaking and permeability increasing module disposed at the front end of the mobile frame 1 for loosening the saline-alkali soil;

[0037] The soil-breaking and infiltration-increasing module includes a front fixed frame 4, which is fixedly installed at the front end of the mobile frame 1. A support shaft 5 is rotatably installed at the bottom of one side of the front fixed frame 4. A number of powder ridge knives 6 are fixedly connected to the outer surface of the support shaft 5. Guide slide grooves 7 are provided on the front and rear ends of the front fixed frame 4. A movable frame 8 is movably installed in the guide slide groove 7 inside the front fixed frame 4. A number of deep loosening shovels 9 are fixedly installed on the upper surface of the movable frame 8. There is a certain gap between two adjacent powder ridge knives 6 and deep loosening shovels 9. Multiple powder ridge knives 6 and deep loosening shovels 9 are staggered with each other. A first driving part 10 is provided at the middle position of the top of the frame 4. The first driving part 10 is an electric telescopic rod. The output end of one side of the first driving part 10 is connected to the movable frame 8. The front and rear ends of the movable frame 8 extend to the outside of the front fixed frame 4 and are fixed with an active rack plate 11. The front and rear ends of the powder ridge knife 6 extend to the outside of the front fixed frame 4 and are equipped with a driven gear 12. A plurality of teeth are fixedly installed at the bottom end of the active rack plate 11. The bottom end of the active rack plate 11 moves close to the top of the outer surface of the driven gear 12, and the active rack plate 11 and the driven gear 12 are engaged with each other.

[0038] A material delivery module is provided in the middle of the upper surface of the mobile frame 1 near the front fixed frame 4, which is used to deliver fertilizer and mix it with the soil to form an improved layer on saline-alkali soil;

[0039] A water-salt control module is also provided on the upper surface of the mobile frame 1 near the tail, which is used for irrigating saline-alkali soil.

[0040] Working principle: When using the soil-breaking and infiltration-increasing module, the staff first starts the first drive unit 10 (electric telescopic rod). The first drive unit 10 extends and pushes the movable frame 8 to move downward along the guide slide 7. The movable frame 8 drives the deep loosening shovel 9 to insert into the soil to perform deep loosening operations on the soil and break the plow bottom layer; at the same time, the active rack plates 11 at the front and rear ends of the movable frame 8 move down with the movable frame 8. Since the active rack plate 11 is engaged with the driven gear 12 on the powder ridge knife 6, the active rack plate 11 moves down and drives the driven gear 12 to rotate. The driven gear 12 drives the powder ridge knife 6 to rotate through the support shaft 5. The powder ridge knife 6 crushes the soil after deep loosening, and the powder ridge knife 6 and the deep loosening shovel 9 are staggered to avoid mutual interference during work, which can more comprehensively improve the soil structure, increase soil permeability, and create favorable conditions for subsequent desalination and fertilization.

[0041] Example 2:

[0042] This embodiment is basically the same as the previous embodiment, except that the material delivery module includes an organic material bin 13 and a conditioning agent bin 14, the organic material bin 13 and the conditioning agent bin 14 are fixedly installed in parallel on the upper surface of the mobile frame 1, the organic material bin 13 stores green manure, and the conditioning agent bin 14 stores microbial agents, and the bottom ends of the organic material bin 13 and the conditioning agent bin 14 extend to the bottom of the mobile frame 1 and are fixedly installed with a plurality of fixed pipe racks 15, and a connecting support plate 16 is movably installed below the fixed pipe rack 15. The upper surface of the connecting support plate 16 extends to the fixed pipe rack 15 and is fixedly installed with a buried material pipe 17, and a fixed support plate 18 is provided on the outer surface of the buried material pipe 17 near the bottom of the connecting support plate 16, and a solenoid valve 19 is fixedly installed on the bottom of the outer surface of the buried material pipe 17, and a lifting mechanism is provided between the organic material bin 13 and the conditioning agent bin 14 for adjusting the placement position of the buried material pipe 17;

[0043] The lifting mechanism includes a positioning support plate 20, which is fixedly installed between the organic material bin 13 and the conditioning agent bin 14 near the top of the fixed pipe rack 15. A fixed inner cavity 21 is opened between the organic material bin 13 and the conditioning agent bin 14. A second driving part 22 is provided inside the fixed inner cavity 21. The second driving part 22 is a servo motor. A screw rod 23 is installed at the output end of the lower bottom surface of the second driving part 22. The screw rod 23 is rotatably installed on the upper surface of the positioning support plate 20. A movable support plate 24 is movably installed on the outer surface of the screw rod 23. The two side edges of the bottom end of the movable support plate 24 pass through the positioning support plate 20 and extend to the upper surface of the connecting support plate 16, and are fixed with connecting rods 25.

[0044] A threaded hole is formed in the middle of the top of the movable support plate 24, and one side of the outer surface of the screw rod 23 is located in the threaded hole, and the screw rod 23 and the threaded hole are adapted to each other;

[0045] Through holes are formed on both sides of the upper surface of the positioning support plate 20. The outer diameter of the connecting rod 25 is smaller than the inner diameter of the through hole. One side of the outer surface of the connecting rod 25 is located in the through hole, and the connecting rod 25 and the through hole are embedded in each other.

[0046] Working principle: When using the material delivery module, the staff first starts the second drive unit 22 (servo motor) according to the soil improvement depth requirement. The second drive unit 22 drives the screw rod 23 to rotate. Since the screw rod 23 is adapted to the threaded hole of the movable support plate 24, the rotation of the screw rod 23 causes the movable support plate 24 to move up and down along the screw rod 23. The movable support plate 24 drives the connecting support plate 16 to rise and fall through the connecting rod 25. The connecting support plate 16 drives the buried pipe 17 to move in the fixed pipe rack 15 to adjust the depth of the bottom of the buried pipe 17 into the soil; after reaching the preset depth, the staff controls the solenoid valve 19 at the bottom of the organic material bin 13 and the conditioner bin 14 to open, and the green manure and microbial agent are respectively transported to the deep soil layer through the corresponding buried pipe 17. The fixed support plate 18 can enhance the stability of the buried pipe 17 to prevent it from shaking during the delivery process; by controlling the opening and closing time of the solenoid valve 19, the delivery ratio of the two materials can be adjusted to meet the improvement needs of soils with different salinity and alkalinity, achieve precise fertilization, and increase the soil nutrient storage capacity.

[0047] Example 3:

[0048] This embodiment is basically the same as the previous embodiment, except that the water and salt control module includes a water storage tank 26, which is fixedly mounted in the middle position of the upper surface of the mobile frame 1, and a plurality of water storage tanks 27 are opened in the middle of the top of the water storage tank 26. A mixing bin 28 is opened at the bottom of the water storage tank 26, and a control valve is installed between the water storage tank 27 and the mixing bin 28. The bottom edge of the mixing bin 28 extends to the bottom of the mobile frame 1 and is symmetrically provided with a No. 1 connecting pipe 29. The bottom opening of the No. 1 connecting pipe 29 is placed on the lower bottom surface of the mobile frame 1 and an atomizing nozzle 30 is installed obliquely. The bottom edge of the inner wall of the water storage tank 27 extends to the bottom of the mobile frame 1 and is fixedly installed with a drip irrigation pipe 31. The lower bottom surface of the drip irrigation pipe 31 is provided with a plurality of drip irrigation heads 32 at a certain interval. The tail of the mobile frame 1 is also provided with a salt drainage ditch structure for collecting high-salt wastewater;

[0049] The salt drainage ditch structure includes a salt storage box 33, which is fixedly mounted on the upper surface of the mobile frame 1 near the tail. A tail support frame 34 is welded to the tail of the mobile frame 1. Several trench openers 35 are fixedly mounted on the bottom of one side of the inner wall of the tail support frame 34. A salt conveying trough 36 is opened on one side of the inner wall of the tail support frame 34 near the top of the trench opener 35. A No. 2 connecting pipe 37 is fixedly mounted on one side of the inner wall of the salt storage box 33 extending to the opening on the upper surface of the salt conveying trough 36.

[0050] Working principle: When using the water-salt control module, the staff first injects different water sources such as the Yellow River water and groundwater into different water tanks 27 of the water tank 26. According to the salinity of the soil, the control valve between the corresponding water tank 27 and the mixing chamber 28 is opened. After the water source enters the mixing chamber 28, it is transported to the atomizing nozzle 30 through the No. 1 connecting pipe 29. The atomizing nozzle 30 atomizes the water and sprays it evenly on the soil surface for leaching and desalination; for areas where crops have been planted, the passage between the water tank 27 and the drip irrigation pipe 31 can be opened, and the crop roots can be accurately replenished with water through the drip irrigation head 32 to improve the utilization rate of water resources; at the same time, during the movement of the device, the furrow opener 35 on the tail support frame 34 opens a salt drainage ditch in the soil, and the high-salt wastewater generated by leaching is collected through the salt transport trough 36 and transported to the salt storage tank 33 for temporary storage through the No. 2 connecting pipe 37, so as to realize centralized salt drainage and reduce the risk of secondary salinization of the soil; through the coordination of multiple water sources and the combination of different irrigation methods, the irrigation quota can be effectively reduced and the salt improvement effect can be improved.

[0051] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A soil conditioning and improvement device for saline-alkali soil, comprising a mobile frame (1), wherein front driving wheels (2) are symmetrically mounted on the front of the mobile frame (1), and rear supporting wheels (3) are symmetrically mounted on the rear of the mobile frame (1), characterized in that: The front end of the mobile frame (1) is provided with a soil breaking and permeation increasing module for loosening saline-alkali soil; The soil-breaking and infiltration-increasing module comprises a front fixed frame (4), the front fixed frame (4) is fixedly mounted at the front end of the mobile frame (1), a support shaft (5) is rotatably mounted on the bottom of one side of the front fixed frame (4), a plurality of powder ridge knives (6) are fixedly connected to the outer surface of the support shaft (5), the front and rear ends of the front fixed frame (4) are provided with guide slots (7), a movable frame (8) is movably mounted inside the front fixed frame (4) and extends into the guide slots (7), a plurality of deep loosening shovels (9) are fixedly mounted on the upper surface of the movable frame (8), a first driving part (10) is provided at the middle position of the top of the front fixed frame (4), an output end of one side of the first driving part (10) is connected to the movable frame (8), the front and rear ends of the movable frame (8) extend to the outside of the front fixed frame (4) and are fixed with an active rack plate (11), and the front and rear ends of the powder ridge knives (6) extend to the outside of the front fixed frame (4) and are installed with a driven gear (12); A material delivery module is provided in the middle of the upper surface of the mobile frame (1) near the front fixed frame (4), for delivering fertilizer to the saline-alkali soil and mixing it with the soil to form an improved layer; A water and salt control module is also provided on the upper surface of the mobile frame (1) near the tail, for irrigating saline-alkali soil.

2. The soil conditioning and improvement device for saline-alkali soil according to claim 1, characterized in that: The material delivery module comprises an organic material bin (13) and a conditioning agent bin (14), the organic material bin (13) and the conditioning agent bin (14) are fixedly mounted in parallel on the upper surface of the mobile frame (1), the organic material bin (13) stores green manure, the conditioning agent bin (14) stores microbial agents, and the bottom ends of the organic material bin (13) and the conditioning agent bin (14) extend to the bottom of the mobile frame (1) and are fixedly mounted with a plurality of fixed pipe racks (15), the fixed pipe racks (15) ) is movably installed below the organic material bin (13) and the conditioning agent bin (14). The upper surface of the connecting support plate (16) extends to the fixed pipe rack (15) where a buried material pipe (17) is fixedly installed. A fixed support plate (18) is provided on the outer surface of the buried material pipe (17) near the bottom of the connecting support plate (16). A solenoid valve (19) is fixedly installed on the bottom of the outer surface of the buried material pipe (17). A lifting mechanism is provided between the organic material bin (13) and the conditioning agent bin (14) for adjusting the placement position of the buried material pipe (17).

3. The soil conditioning and improvement device for saline-alkali soil according to claim 2, characterized in that: The lifting mechanism comprises a positioning support plate (20), the positioning support plate (20) being fixedly mounted between the organic material bin (13) and the conditioning agent bin (14) and above the fixed pipe rack (15), a fixed inner cavity (21) being provided between the organic material bin (13) and the conditioning agent bin (14), a second driving portion (22) being provided inside the fixed inner cavity (21), a screw rod (23) being mounted at the output end of the lower bottom surface of the second driving portion (22), the screw rod (23) being rotatably mounted on the upper surface of the positioning support plate (20), a movable support plate (24) being movably mounted on the outer surface of the screw rod (23), both sides of the bottom end of the movable support plate (24) passing through the positioning support plate (20) and extending to the upper surface of the connecting support plate (16) and being fixedly connected to a connecting rod (25).

4. The soil conditioning and improvement device for saline-alkali soil according to claim 3, characterized in that: A threaded hole is provided through the middle of the top of the movable support plate (24), one side of the outer surface of the screw rod (23) is located in the threaded hole, and the screw rod (23) and the threaded hole are adapted to each other.

5. The soil conditioning and improvement device for saline-alkali soil according to claim 3, characterized in that: Through holes are provided on both sides of the upper surface of the positioning support plate (20); the outer diameter of the connecting rod (25) is smaller than the inner diameter of the through hole; one side of the outer surface of the connecting rod (25) is located in the through hole; the connecting rod (25) and the through hole are interlocked.

6. The soil conditioning and improvement device for saline-alkali soil according to claim 1, characterized in that: The water-salt control module comprises a water storage tank (26), which is fixedly mounted at the middle position of the upper surface of the mobile frame (1), and a plurality of water storage tanks (27) are provided in the middle of the top of the water storage tank (26), and a mixing chamber (28) is provided at the bottom of the water storage tank (26). A control valve is installed between the water storage tank (27) and the mixing chamber (28), and a No. 1 connecting pipe (29) is symmetrically arranged at the bottom edge of the mixing chamber (28) extending to the bottom of the mobile frame (1). The bottom opening of the No. 1 connecting pipe (29) is placed on the bottom surface of the mobile frame (1) and an atomizing nozzle (30) is obliquely installed. The tail of the mobile frame (1) is also provided with a salt drainage ditch structure for collecting high-salt wastewater.

7. The soil conditioning and improvement device for saline-alkali soil according to claim 6, characterized in that: The salt drainage ditch structure includes a salt storage box (33), which is fixedly mounted on the upper surface of the mobile frame (1) near the tail, and a tail support frame (34) is welded to the tail of the mobile frame (1). A plurality of trench openers (35) are fixedly mounted on the bottom of one side of the inner wall of the tail support frame (34), and a salt delivery trough (36) is opened on one side of the inner wall of the tail support frame (34) near the top of the trench opener (35). A second connecting pipe (37) is fixedly mounted on one side of the inner wall of the salt storage box (33) extending to the opening on the upper surface of the salt delivery trough (36).

8. The soil conditioning and improvement device for saline-alkali soil according to claim 6, characterized in that: The bottom edge of the inner wall of the water storage tank (27) extends to the bottom of the mobile frame (1) and is fixedly installed with a drip irrigation pipe (31). A plurality of drip irrigation heads (32) are arranged at a certain interval on the bottom surface of the drip irrigation pipe (31).

9. The soil conditioning and improvement device for saline-alkali soil according to claim 1, characterized in that: A plurality of teeth are fixedly mounted on the bottom end of the active rack plate (11), and the bottom end of the active rack plate (11) is movable close to the top of the outer surface of the driven gear (12), and the active rack plate (11) and the driven gear (12) are meshed with each other.

10. The soil conditioning and improvement device for saline-alkali soil according to claim 1, characterized in that: There is a certain gap between two adjacent powder ridge knives (6) and deep loosening shovels (9), and a plurality of powder ridge knives (6) and deep loosening shovels (9) are arranged in an interlaced manner.

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