Testing device for improving and utilizing saline-alkali soil by halophyte

Abstract

The invention discloses a test device for saline-alkali soil improvement and utilization of halophyte, and particularly relates to the technical field of halophyte improvement and utilization, the test device comprises a test frame, and a separation frame is arranged in the test frame. By arranging the transverse moving mechanism and the longitudinal moving mechanism, the spray pipe component can be quickly positioned, so that the spray pipe component can be accurately moved to the position over the middle of a certain test area, the spray pipe component is composed of the supporting base, the water collecting barrel, the multiple sets of spray pipes and other structures, and the multiple sets of spray pipes can be controlled to synchronously stretch outwards or gather inwards; meanwhile, the rotating mechanism can drive the connecting pipe to rotate at the bottom end of the fixed pipe, so that the connecting pipe can drive the multiple sets of spray pipes to do circular motion, water liquid can be evenly distributed and diffused, under the joint cooperation of the structure, irrigation operation can be accurately and stably conducted on all test areas according to requirements, operation is efficient and convenient, and the work efficiency is improved. The work efficiency is high, the irrigation uniformity of a test area can be effectively guaranteed, and the use effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of halophyte improvement and utilization, and in particular to a test device for halophyte improvement and utilization of saline-alkali land. Background Art

[0002] Halophytes, also known as halophytes, are plants that grow in soils with high sodium chloride contents. Soil containing large amounts of soluble sodium salts is harmful to most plants. Typically, many plants cannot tolerate even 0.05% sodium chloride in the soil. However, halophytes can grow in soils with salt contents as high as 3-4%. Because saline-alkali soils contain large amounts of salt and alkalinity, halophytes are often planted to improve the soil. However, the improvement effects of different halophytes vary, necessitating experimental analysis to determine the optimal management model.

[0003] At present, when using experimental equipment for improving saline-alkali land with halophytes, multiple test areas are usually divided to plant different halophytes, and the improvement effect of saline-alkali soil is obtained through comparison. However, due to the large number of test areas and their wide distribution, it is inconvenient to water the halophytes each time. It is not only time-consuming and labor-intensive, but also has low work efficiency. It is also difficult to effectively ensure the uniformity of watering in each area, which can easily affect the test results and the use effect is poor. Summary of the Invention

[0004] The purpose of the present invention is to provide a test device for improving and utilizing saline-alkali land with halophytes. By setting a transverse movement mechanism and a longitudinal movement mechanism, the nozzle component can be quickly positioned so that the nozzle component can be accurately moved to the middle of a certain test area. The nozzle component is composed of a support seat, a water collecting cylinder and multiple groups of nozzles and other structures. The multiple groups of nozzles can be controlled to open outward or gather inward synchronously. At the same time, the connecting pipe can be driven to rotate at the bottom end of the fixed pipe through the rotating mechanism, so that the connecting pipe can drive the multiple groups of nozzles to perform circular motion, so that the water can be evenly distributed and diffused. Under the joint cooperation of this structure, each test area can be irrigated accurately and stably according to needs. Not only is the operation efficient and convenient, the work efficiency is high, and the uniformity of irrigation of the test area can be effectively guaranteed, and the use effect is good, so as to solve the above-mentioned shortcomings in the technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a test device for improving and utilizing saline-alkali land with halophytes, comprising:

[0006] A test frame, wherein a partition frame is provided inside the test frame, and T-shaped fixing plates are symmetrically provided on both sides of the test frame, the top sides of the two T-shaped fixing plates are slidably connected to fixing seats, and a support frame is provided between the top ends of the two fixing seats near the top of the test frame;

[0007] The support frame is provided with a transverse movement mechanism, and the transverse movement mechanism is used to drive the fixed seat to move;

[0008] The top side of the support frame is slidably connected to a U-shaped base, and a water pump is provided on the top side of the U-shaped base. One end of the water pump is connected to a water pipe, and the other end of the water pump is connected to a fixed pipe through a pipe near the bottom of the U-shaped base. A water supply hose is provided on one end of the water pipe relative to the water pump;

[0009] The support frame is provided with a longitudinal movement mechanism, which is used to drive the U-shaped card seat to move;

[0010] A connecting pipe, wherein a rotating joint is provided at the top end of the connecting pipe, and the connecting pipe is rotatably connected to the bottom end of the fixed pipe through the rotating joint, a rotating mechanism is provided between the top end of the connecting pipe and the fixed pipe, and a nozzle component is provided at the bottom end of the connecting pipe.

[0011] Preferably, the nozzle component includes a support seat, a water collecting cylinder is provided on the bottom side of the support seat, the bottom end of the connecting pipe passes through the support seat and extends into the water collecting cylinder, the bottom side of the water collecting cylinder is connected to a plurality of nozzles in a circular array through a rotating shaft, an infusion hose is provided between the nozzle and the water collecting cylinder, the side wall of the support seat is provided with a plurality of support frames facing the nozzle, the interior of the support frame is slidably connected to a movable block, a fixed sleeve is provided at the top of the tube, a connecting arm is rotatably connected to the fixed sleeve and the movable block above through a rotating shaft, and a synchronous transmission mechanism is provided on the support seat, and the synchronous transmission mechanism is used to drive the plurality of movable blocks to move inward or outward synchronously.

[0012] Preferably, the synchronous transmission mechanism includes an annular cavity provided in the support seat, a transmission ring is rotatably installed inside the annular cavity, a gear ring is provided on the bottom side of the transmission ring, the interiors of the plurality of support frames are rotatably connected with studs through bearings, one end of the plurality of studs extends into the annular cavity and is provided with a transmission gear, the plurality of transmission gears are engaged with the gear ring, and the movable block is connected to the outside of the stud by a threaded engagement.

[0013] Preferably, a first drive motor is fixed to one side of the support seat, an output end of the first drive motor extends into the annular cavity and is provided with a drive gear, and the drive gear is meshed with the gear ring.

[0014] Preferably, a plurality of limiting columns are provided on the side wall of the transmission ring, and limiting grooves matching the limiting columns are opened on the inner side of the annular cavity.

[0015] Preferably, the rotating mechanism includes a second drive motor fixedly connected to the top of the fixed tube near the top of the rotating joint through a bracket, the output end of the second drive motor is connected to a first gear, and a second gear is fixed to the top of the connecting tube near the bottom of the rotating joint, and the first gear is meshed with the second gear.

[0016] Preferably, the transverse movement mechanism includes a first sliding cavity opened on the top side of two T-shaped fixed plates, the interior of the two first sliding cavities are slidably connected to a slider, the top ends of the two sliders extend to the outside of the first sliding cavity and are fixedly connected to the fixed seat, one of the first sliding cavities is rotatably connected to a first threaded rod through a bearing, and the other first sliding cavity is fixed with a guide rod, one of the sliders is slidably sleeved outside the guide rod, and the other slider is screwed onto the outside of the first threaded rod, one end of one of the T-shaped fixed plates is fixed with a first drive motor, and the output end of the first drive motor is connected to the first threaded rod.

[0017] Preferably, the longitudinal movement mechanism includes a second sliding cavity provided on the top side of the support frame, the interior of the second sliding cavity is rotatably connected to a second threaded rod through a bearing, the exterior of the second threaded rod is screwed to a sliding column through a thread, the top end of the sliding column extends to the outside of the second sliding cavity and is fixedly connected to the U-shaped socket, a second drive motor is fixed to one end of the support frame, and the output end of the second drive motor is connected to the second threaded rod.

[0018] Preferably, a branch pipe is provided on the top side of the water pipe, the top end of the branch pipe is connected to a feeding tank, and a first control valve is provided on the branch pipe. A second control valve is provided at one end of the water pipe between the water supply hose and the branch pipe.

[0019] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0020] By setting a transverse movement mechanism, the transverse movement mechanism can drive the support frame to drive the nozzle component to move horizontally above the test frame, and by setting a longitudinal movement mechanism, the longitudinal movement mechanism can drive the U-shaped holder to move on the support frame, so that the U-shaped holder drives the nozzle component to move longitudinally above the test frame, thereby quickly positioning the nozzle component so that the nozzle component can be accurately moved to the center and above a certain test area;

[0021] The nozzle assembly is composed of a support seat, a water collecting barrel and multiple groups of nozzles, and with the cooperation of the synchronous transmission mechanism, the connecting arm can drive the multiple groups of nozzles to rotate on the bottom side of the water collecting barrel, so that the multiple groups of nozzles can be controlled to open outward or gather inward synchronously. At the same time, by providing a rotating mechanism, the connecting pipe can be driven to rotate at the bottom end of the fixed pipe, so that the connecting pipe can drive the multiple groups of nozzles to perform circular motion, so that the water can be evenly distributed and diffused. With the joint cooperation of this structure, each test area can be irrigated accurately and stably according to needs. Not only is the operation efficient and convenient, the work efficiency is high, and the uniformity of irrigation of the test area can be effectively guaranteed, and the use effect is good. 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 This is one of the overall structural diagrams of the present invention;

[0024] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0025] Figure 3 This is a schematic structural diagram of the first threaded rod in the T-shaped fixing plate of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the guide rod in the T-shaped fixing plate of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the connection between the support frame and the U-shaped holder of the present invention;

[0028] Figure 6 Schematic diagram of the internal structure of the second sliding cavity of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the connection between the U-shaped holder and the nozzle component of the present invention;

[0030] Figure 8 This is the second structural diagram of the connection between the U-shaped holder and the nozzle component of the present invention;

[0031] Figure 9 A longitudinal cross-sectional view of the support base and the water collecting cylinder of the present invention;

[0032] Figure 10 This is a schematic diagram of the three-dimensional structure of the support base and the water collecting cylinder of the present invention when viewed from above;

[0033] Figure 11This is a schematic diagram of the internal structure of the support base of the present invention;

[0034] Figure 12 It is a longitudinal sectional view of the support seat of the present invention.

[0035] Description of reference numerals:

[0036] 1. Test frame; 2. Partition frame; 3. T-shaped fixing plate; 4. Fixing seat; 5. Support frame; 6. First sliding cavity; 7. Sliding block; 8. First threaded rod; 9. First drive motor; 10. Guide rod; 11. Second sliding cavity; 12. Second threaded rod; 13. Sliding column; 14. Second drive motor; 15. U-shaped holder; 16. Water pump; 17. Water pipe; 18. Feeding tank; 19. First control valve; 20. Fixing pipe; 21. Nozzle component; 22. Gear ring; 23. Stud; 24. Transmission gear; 25. First drive motor; 26. Drive gear; 27. Limiting column; 28. Limiting groove; 29. Rotary joint; 30. Connecting pipe; 31. Second drive motor; 32. First gear; 33. Second gear; 34. Second control valve; 35. Water supply hose; 36. Branch pipe

[0037] 2100, support base; 2101, water collecting cylinder; 2102, nozzle; 2103, infusion hose; 2104, support frame; 2105, movable block; 2106, connecting arm; 2107, fixing sleeve; 2108, annular cavity; 2109, transmission ring. DETAILED DESCRIPTION

[0038] 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.

[0039] The present invention provides Figures 1-12 The experimental device for improving and utilizing saline-alkali land with halophytes shown includes:

[0040] A test frame 1 is provided with a partition frame 2 inside the test frame 1, and T-shaped fixing plates 3 are symmetrically provided on both sides of the test frame 1. The top sides of the two T-shaped fixing plates 3 are slidably connected with fixing seats 4, and a support frame 5 is provided between the top ends of the two fixing seats 4 near the top of the test frame 1; based on this, the test frame 1 can be divided into multiple different areas through the partition frame 2, and soil environment detection sensors can be buried in the soil of each area to detect later soil data.

[0041] The support frame 5 is provided with a transverse movement mechanism, which is used to drive the fixed seat 4 to move;

[0042] Specific reference Figure 3 and Figure 4As shown, the transverse movement mechanism includes a first sliding cavity 6 formed on the top side of two T-shaped fixed plates 3. Sliders 7 are slidably connected to the interior of each of the two first sliding cavities 6. The top ends of the two slides 7 extend outside the first sliding cavity 6 and are fixedly connected to the fixed seat 4. A first threaded rod 8 is rotatably connected to one of the first sliding cavities 6 via a bearing, and a guide rod 10 is fixed to the other first sliding cavity 6. One of the slides 7 is slidably mounted outside the guide rod 10, and the other slide 7 is screwed onto the outside of the first threaded rod 8. A first drive motor 9 is fixed to one end of one of the T-shaped fixed plates 3, and the output end of the first drive motor 9 is connected to the first threaded rod 8. Based on this, the first drive motor 9 drives the first threaded rod 8 to rotate, which can cause the first threaded rod 8 to drive the slides 7 to slide within the first sliding cavity 6. The slides 7 then drive the fixed seat 4 to slide on the T-shaped fixed plate 3. With the cooperation of the other set of slides 7 and the guide rod 10, the two fixed seats 4 can drive the support frame 5 to move stably, and the support frame 5 can then drive the nozzle component 21 to move laterally above the test frame 1.

[0043] A U-shaped holder 15 is slidably connected to the top side of the support frame 5. A water pump 16 is provided on the top side of the U-shaped holder 15. One end of the water pump 16 is connected to a water pipe 17. The other end of the water pump 16 is connected to a fixed pipe 20 near the bottom of the U-shaped holder 15 through a pipe. A water supply hose 35 is provided on the end of the water pipe 17 opposite to the water pump 16.

[0044] The support frame 5 is provided with a longitudinal movement mechanism, which is used to drive the U-shaped card seat 15 to move;

[0045] Specific reference Figure 5 and Figure 6 As shown, the longitudinal movement mechanism includes a second sliding cavity 11 provided on the top side of the support frame 5. The interior of the second sliding cavity 11 is rotatably connected to a second threaded rod 12 via a bearing. The exterior of the second threaded rod 12 is screwed to a slide post 13 via a threaded engagement. The top end of the slide post 13 extends outside the second sliding cavity 11 and is fixedly connected to a U-shaped holder 15. A second drive motor 14 is fixed to one end of the support frame 5, and the output end of the second drive motor 14 is connected to the second threaded rod 12. Based on this, the second drive motor 14 drives the second threaded rod 12 to rotate, which can cause the second threaded rod 12 to drive the slide post 13 to slide within the second sliding cavity 11, thereby causing the slide post 13 to drive the U-shaped holder 15 to move on the support frame 5. Then, the U-shaped holder 15 can drive the nozzle component 21 to move longitudinally above the test frame 1.

[0046] The connecting tube 30 is provided with a rotary joint 29 at the top end thereof, and the connecting tube 30 is rotatably connected to the bottom end of the fixed tube 20 through the rotary joint 29. A rotating mechanism is provided between the top end of the connecting tube 30 and the fixed tube 20, and a nozzle component 21 is provided at the bottom end of the connecting tube 30.

[0047] The nozzle component 21 includes a support seat 2100, and a water collecting cylinder 2101 is provided on the bottom side of the support seat 2100. The bottom end of the connecting pipe 30 passes through the support seat 2100 and extends into the water collecting cylinder 2101. The bottom side of the water collecting cylinder 2101 is connected to multiple nozzles 2102 in a circular array through a rotating shaft. An infusion hose 2103 is provided between the nozzle 2102 and the water collecting cylinder 2101. The side wall of the support seat 2100 is provided with multiple support frames 2104 facing the nozzle 2102. The internal sliding connection of the support frame 2104 is connected to a movable block 2105. A fixed sleeve 2107 is provided at the top of the tube 2102. The fixed sleeve 2107 is rotatably connected to the movable block 2105 above by a rotating shaft with a connecting arm 2106. A synchronous transmission mechanism is provided on the support seat 2100, and the synchronous transmission mechanism is used to drive the multiple movable blocks 2105 to move inward or outward synchronously.

[0048] Specific reference Figure 9 、 Figure 10 、 Figure 11 and Figure 12 As shown, the synchronous transmission mechanism includes an annular cavity 2108 provided in the support seat 2100, a transmission ring 2109 is rotatably installed inside the annular cavity 2108, a gear ring 22 is provided on the bottom side of the transmission ring 2109, and the interiors of multiple support frames 2104 are rotatably connected to studs 23 through bearings, and one end of multiple studs 23 extends into the annular cavity 2108 and is provided with transmission gears 24, and multiple transmission gears 24 are meshed with the gear ring 22, and the movable block 2105 is screwed on the outside of the stud 23 by a thread.

[0049] A first drive motor 25 is fixed to one side of the support base 2100. The output end of the first drive motor 25 extends into the annular cavity 2108 and is provided with a drive gear 26, which meshes with the gear ring 22. Based on this, the first drive motor 25 drives the drive gear 26 to rotate, which in turn drives the gear ring 22 to rotate. The gear ring 22 then drives the transmission ring 2109 to rotate within the annular cavity 2108, which in turn drives the transmission ring 2109 to rotate within the annular cavity 2108. This allows the transmission ring 2109 to drive multiple transmission gears 24 to rotate synchronously through the gear ring 22. The transmission gear 24 then drives the stud 23 to rotate, causing the stud 23 to drive the movable block 2105 to slide within the support frame 2104. The movable block 2105 then pulls the connecting arm 2106 to rotate, which in turn drives the nozzles 2102 to rotate on the bottom side of the water collection barrel 2101, thereby controlling the multiple groups of nozzles 2102 to synchronously expand outward or converge inward.

[0050] The sidewall of the transmission ring 2109 is provided with a plurality of limiting posts 27, and the inner side of the annular cavity 2108 is provided with limiting grooves 28 that match the limiting posts 27. Based on this, by providing the limiting posts 27 and the limiting grooves 28, the stability of the transmission ring 2109 during rotation can be greatly enhanced.

[0051] The rotating mechanism includes a second drive motor 31 fixedly connected to the top of the fixed tube 20, near the top of the rotating joint 29, via a bracket. The output end of the second drive motor 31 is connected to a first gear 32. A second gear 33 is fixed to the top of the connecting tube 30, near the bottom of the rotating joint 29, and the first gear 32 and the second gear 33 are meshed. Based on this, the second drive motor 31 drives the first gear 32 to rotate, which in turn drives the second gear 33 to rotate. Under the action of the rotating joint 29, the connecting tube 30 is driven to rotate at the bottom end of the fixed tube 20, thereby causing the connecting tube 30 to drive the multiple nozzle groups 2102 to perform circular motion.

[0052] Specific reference Figure 7 and Figure 8 As shown, a branch pipe 36 is provided on the top side of the water pipe 17. The top end of the branch pipe 36 is connected to the feeding tank 18. A first control valve 19 is installed on the branch pipe 36. A second control valve 34 is installed at one end of the water pipe 17 between the water supply hose 35 and the branch pipe 36. Based on this, the installation of the feeding tank 18 allows fertilizer to be fed into the water pipe 17 to achieve fertilizer irrigation.

[0053] When in use, the support frame 5 can be driven by the transverse movement mechanism to drive the nozzle component 21 to move laterally above the test frame 1, and the U-shaped holder 15 can be driven by the longitudinal movement mechanism to move on the support frame 5, so that the U-shaped holder 15 drives the nozzle component 21 to move longitudinally above the test frame 1, thereby quickly positioning the nozzle component 21 so that the nozzle component 21 can be accurately moved to the center of a certain test area.

[0054] Then the water pump 16 can be started, and in conjunction with the water supply hose 35 and the water delivery pipe 17, water can be pumped into the fixed pipe 20, and then sent into the water collection cylinder 2101 through the connecting pipe 30, and then sent into the multiple groups of nozzle components 21 through each liquid delivery hose 2103. The nozzle components 21 spray out water to irrigate the test area below;

[0055] By starting the first drive motor 25, the first drive motor 25 drives the drive gear 26 to rotate, which can make the drive gear 26 drive the gear ring 22 to rotate, and then the gear ring 22 can drive the transmission ring 2109 to rotate in the annular cavity 2108, so that the transmission ring 2109 can drive multiple transmission gears 24 to rotate synchronously through the gear ring 22, and then the transmission gear 24 drives the stud 23 to rotate, so that the stud 23 drives the movable block 2105 to slide in the support frame 2104, and then the movable block 2105 pulls the connecting arm 2106 By rotating, the connecting arm 2106 can drive the nozzles 2102 to rotate at the bottom side of the water collecting cylinder 2101, thereby controlling the multiple groups of nozzles 2102 to synchronously open outward or gather inward. At the same time, the second drive motor 31 is started, and the second drive motor 31 drives the first gear 32 to rotate, so that the first gear 32 drives the second gear 33 to rotate. Under the action of the rotary joint 29, the connecting pipe 30 can be driven to rotate at the bottom end of the fixed pipe 20, so that the connecting pipe 30 can drive the multiple groups of nozzles 2102 to perform circular motion.

[0056] In summary, under the joint action of this structure, each test area can be irrigated accurately and stably according to needs. Not only is the operation efficient and convenient, the work efficiency is high, but it can also effectively ensure the uniformity of watering in the test area, and the use effect is better.

[0057] 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 test device for improving and utilizing saline-alkali land with halophytes, characterized in that: include: A test frame (1), wherein a partition frame (2) is provided inside the test frame (1), and T-shaped fixing plates (3) are symmetrically provided on both sides of the test frame (1), the top sides of the two T-shaped fixing plates (3) are both slidably connected to fixing seats (4), and a support frame (5) is provided between the top ends of the two fixing seats (4) near the top of the test frame (1); The support frame (5) is provided with a transverse movement mechanism, and the transverse movement mechanism is used to drive the fixed seat (4) to move; The top side of the support frame (5) is slidably connected to a U-shaped card seat (15), and a water pump (16) is provided on the top side of the U-shaped card seat (15). One end of the water pump (16) is connected to a water pipe (17), and the other end of the water pump (16) is connected to a fixed pipe (20) through a pipeline near the bottom of the U-shaped card seat (15). A water supply hose (35) is provided at one end of the water pipe (17) relative to the water pump (16); The support frame (5) is provided with a longitudinal movement mechanism, and the longitudinal movement mechanism is used to drive the U-shaped card seat (15) to move; A connecting pipe (30) is provided with a rotary joint (29) at the top end of the connecting pipe (30), and the connecting pipe (30) is rotatably connected to the bottom end of the fixed pipe (20) through the rotary joint (29). A rotating mechanism is provided between the top end of the connecting pipe (30) and the fixed pipe (20), and a nozzle component (21) is provided at the bottom end of the connecting pipe (30).

2. The experimental device for improving and utilizing saline-alkali land with halophytes according to claim 1, characterized in that: The nozzle component (21) includes a support seat (2100), a water collecting cylinder (2101) is provided on the bottom side of the support seat (2100), the bottom end of the connecting pipe (30) passes through the support seat (2100) and extends into the water collecting cylinder (2101), the bottom side of the water collecting cylinder (2101) is connected to a plurality of nozzles (2102) in a circular array by a rotating shaft, an infusion hose (2103) is provided between the nozzles (2102) and the water collecting cylinder (2101), and the side wall of the support seat (2100) is provided with a nozzle (2103). A plurality of support frames (2104) facing the nozzle (2102) are provided, wherein a movable block (2105) is slidably connected inside the support frame (2104), a fixed sleeve (2107) is provided at the top end of the tube (2102), and a connecting arm (2106) is rotatably connected between the fixed sleeve (2107) and the movable block (2105) above via a rotating shaft, and a synchronous transmission mechanism is provided on the support seat (2100), wherein the synchronous transmission mechanism is used to drive the plurality of movable blocks (2105) to move inward or outward synchronously.

3. The experimental device for improving and utilizing saline-alkali land with halophytes according to claim 2, characterized in that: The synchronous transmission mechanism includes an annular cavity (2108) arranged in a support seat (2100), a transmission ring (2109) is rotatably installed inside the annular cavity (2108), a gear ring (22) is provided on the bottom side of the transmission ring (2109), the interiors of the plurality of support frames (2104) are rotatably connected to studs (23) through bearings, one end of the plurality of studs (23) extends into the annular cavity (2108) and is provided with a transmission gear (24), the plurality of transmission gears (24) are meshed with the gear ring (22), and the movable block (2105) is screwed to the outside of the studs (23) through a thread.

4. The experimental device for improving and utilizing saline-alkali land with halophytes according to claim 3, characterized in that: A first drive motor (25) is fixed to one side of the support seat (2100), and an output end of the first drive motor (25) extends into the annular cavity (2108) and is provided with a drive gear (26), and the drive gear (26) is meshed with the gear ring (22).

5. The experimental device for improving and utilizing saline-alkali land with halophytes according to claim 3, characterized in that: The side wall of the transmission ring (2109) is provided with a plurality of limiting columns (27), and the inner side of the annular cavity (2108) is provided with limiting grooves (28) matching the limiting columns (27).

6. The experimental device for improving and utilizing saline-alkali land with halophytes according to claim 1, characterized in that: The rotating mechanism comprises a second drive motor (31) fixedly connected to the top of the fixed tube (20) near the top of the rotating joint (29) through a bracket, the output end of the second drive motor (31) is connected to a first gear (32), and a second gear (33) is fixed to the top of the connecting tube (30) near the bottom of the rotating joint (29), and the first gear (32) and the second gear (33) are meshed.

7. The experimental device for improving and utilizing saline-alkali land with halophytes according to claim 1, characterized in that: The transverse movement mechanism includes a first sliding cavity (6) opened on the top side of two T-shaped fixed plates (3), the interior of the two first sliding cavities (6) is slidably connected to a slider (7), the top ends of the two sliders (7) extend to the outside of the first sliding cavity (6) and are fixedly connected to the fixed seat (4), one of the first sliding cavities (6) is rotatably connected to a first threaded rod (8) through a bearing, and the other first sliding cavity (6) is fixed with a guide rod (10), one of the sliders (7) is slidably sleeved outside the guide rod (10), and the other slider (7) is screwed on the outside of the first threaded rod (8), one end of one of the T-shaped fixed plates (3) is fixed with a first drive motor (9), and the output end of the first drive motor (9) is connected to the first threaded rod (8).

8. The experimental device for improving and utilizing saline-alkali land with halophytes according to claim 1, characterized in that: The longitudinal movement mechanism includes a second sliding cavity (11) arranged on the top side of the support frame (5), the interior of the second sliding cavity (11) is rotatably connected to a second threaded rod (12) through a bearing, the exterior of the second threaded rod (12) is screwed together with a sliding column (13), the top end of the sliding column (13) extends to the outside of the second sliding cavity (11) and is fixedly connected to a U-shaped holder (15), a second drive motor (14) is fixed to one end of the support frame (5), and the output end of the second drive motor (14) is connected to the second threaded rod (12).

9. The experimental device for improving and utilizing saline-alkali land with halophytes according to claim 1, characterized in that: A branch pipe (36) is provided on the top side of the water delivery pipe (17), the top end of the branch pipe (36) is connected to a feeding tank (18), and a first control valve (19) is provided on the branch pipe (36). A second control valve (34) is provided at one end of the water delivery pipe (17) between the water supply hose (35) and the branch pipe (36).

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