Experimental device and method for simulating saline-alkaline tolerance of soybeans

Abstract

The invention relates to an experimental device and method for simulating saline-alkaline tolerance of soybeans, and relates to the technical field of saline-alkaline tolerance experiments of soybeans. According to the invention, the following problems existing in the process of a soybean saline-alkaline tolerance experiment in the prior art can be solved: firstly, a plurality of experiment chambers are arranged in the experiment box, and conveying pipes with consistent placement positions are arranged, so that the temperature and humidity in all the chambers are kept highly consistent; due to the consistency, experimental errors caused by environmental differences are eliminated, so that experimental results in different experimental chambers are more comparable, and the accuracy of experimental data is enhanced; secondly, crystals generated in the water guide pipe can be cleaned and filtered by arranging a cleaning mechanism, cleanliness of the interior of the water guide pipe is guaranteed, effectiveness of the water guide pipe for conveying the saline-alkaline solution is guaranteed, physical and chemical damage of the crystals to the water guide pipe can be reduced by timely cleaning the crystals, the service life of the water guide pipe is prolonged, and the service life of the water guide pipe is prolonged. And the maintenance and replacement cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of soybean salt-alkali tolerance experiments, and in particular to an experimental device and method for simulating soybean salt-alkali tolerance. Background Art

[0002] As a traditional crop and an important cash crop in my country, soybeans produce soybean oil, tofu and other products that play an important role in our daily life. However, soybean growth is very picky about soil conditions, especially in saline-alkali land. The successful implementation of the salt-alkali tolerance experiment is expected to cultivate new soybean varieties that are adapted to saline-alkali land growth, thereby improving the sustainability of soybean cultivation.

[0003] Existing experiments on soybean salt-alkali tolerance mainly use field trials, greenhouse trials, hydroponic trials, etc. to screen out salt-alkali tolerant soybean germplasm resources. These methods usually involve stress treatment of soybeans under different salt-alkali concentrations and observing changes in their growth conditions, yields, and physiological indicators.

[0004] For example, the Chinese patent with publication number CN118355810B discloses a test device for identifying the salt-alkali tolerance of soybean germplasm resources;

[0005] The invention relates to the technical field of soybean salt-alkali tolerance test, and in particular to a test device for identifying the salt-alkali tolerance of soybean germplasm resources, comprising a box body and an experimental soil block arranged inside the box body, and the test device also comprises a pipeline, a delivery pump and a constant temperature component; the pipeline comprises a coil, an inlet end and an outlet end, the coil is arranged inside the experimental soil block, the inlet end and the outlet end are respectively connected to the inlet and outlet of the coil, and the inlet end and the outlet end extend from two opposite outer sides of the box body respectively; baffles are fixed on both sides of the bottom of the coil, and the bottom of the two baffles is fixed with the same bottom plate, the coil, the baffle and the bottom plate are surrounded to form a cavity consistent with the extension direction of the coil, and the two ends of the cavity along the extension direction of the coil are sealed by end plates, the bottom surface of the coil is provided with a first through hole connected to the cavity, and the bottom plate is provided with a plurality of second through holes penetrating the coil. The above device can make the fluid evenly distributed inside the experimental soil block, and improve the accuracy of the test results.

[0006] However, the above device still has some shortcomings in actual use:

[0007] 1. The above device obtains multiple groups of control data by planting soybeans in multiple boxes. However, each box is operated independently, which will lead to deviations in temperature and moisture conditions between the boxes. In addition to the salinity of the experimental soil, there are redundant experimental variables, which reduces the accuracy of the experiment.

[0008] 2. The above device transports the saline-alkali solution to various positions in the box body by setting up pipelines and delivery pumps, ensuring that the saline-alkali solution can be evenly distributed inside the experimental soil block. However, although the holes opened on the pipeline are convenient for the saline-alkali solution to enter the experimental soil block, the experimental soil block is prone to block the water outlet, and the saline-alkali solution is prone to condense at the hole, causing blockage and affecting the efficiency of the pipeline.

[0009] Therefore, based on the above-stated viewpoints, it is of great significance to improve and perfect the test equipment for identifying the salt-alkali tolerance of soybean germplasm resources. It can not only solve the problem of deviation in experimental data, but also solve the problem of blockage of water outlets when transporting saline-alkali solutions to experimental soil blocks. Summary of the invention

[0010] In order to solve the above problems, the present invention provides a simulation experiment device and method for soybean salt-alkali tolerance.

[0011] On the one hand, an experimental device simulating soybean salt-alkali tolerance includes an experimental box, which is divided into multiple experimental chambers by partitions, and a water pipe passing through the multiple experimental chambers is installed on the experimental box, and multiple delivery pipes connected to the water pipe are installed above the experimental box, and the water pipe is provided with multiple water holes corresponding to the centers of the experimental chambers.

[0012] A split shaft penetrating the water pipe is rotatably arranged inside the water pipe at the junction of the experimental chamber, and a water baffle is arranged inside the water pipe on the split shaft. A cleaning structure for cleaning the water pipe is arranged inside the experimental box.

[0013] Preferably, the cleaning structure includes a working pipe, which is arranged above the water pipe and connected to the inside of the water pipe. A plurality of sliders are slidably arranged inside the working pipe, and the sliders are slidably arranged between two adjacent water baffles. One end of the slider passes through the working pipe and extends into the water pipe. A cleaning piece for cleaning the inside of the water pipe is arranged on the slider.

[0014] Preferably, the cleaning member comprises a cleaning ring, and slide grooves are symmetrically provided on both sides of the cleaning ring. L-shaped limit blocks are symmetrically provided on the sliding block, and the cleaning ring is rotatably provided between the two limit blocks.

[0015] Preferably, a driving member for driving the cleaning ring to rotate is also provided inside the water conduit.

[0016] The driving member comprises a driving block, a thread groove is provided inside the water conduit, and the driving block is slidably arranged in the thread groove.

[0017] Preferably, the experimental box is also provided with a reciprocating member for driving the slider to slide inside the working tube, the reciprocating member includes a pull rope, and the multiple sliders are connected by the pull rope. Working boxes are installed on both ends of the experimental box in the width direction, and the two working boxes are respectively rotatably installed with winding roller one and winding roller two, and the winding roller two is arranged in the working box through a spiral spring.

[0018] Preferably, an actuating member for driving the winding roller to rotate is arranged in a working box opposite to the winding roller, and the actuating member includes an actuating gear, and the actuating gear is arranged on the output shaft of the winding roller. A half gear cooperating with the actuating gear is also rotatably arranged in the working box.

[0019] Preferably, a barrier member for sealing the water guide holes is further provided inside the experimental box, and the barrier member includes a matching groove. Matching grooves corresponding to the water guide holes are provided inside the water guide pipe along its length direction, and a barrier plate is slidably provided inside the matching groove.

[0020] Preferably, a connecting pipe with the same extension direction as the water pipe is provided below the water pipe inside the experimental box, a connecting rod is installed at the bottom of the baffle plate, the dividing shaft passes through the water pipe and is rotatably arranged in the connecting pipe, a cam is installed at one end of the dividing shaft located in the connecting pipe, an L-shaped mating rod is provided on the connecting rod, and the mating rod is slidably arranged in the connecting pipe through a push spring, and the end of the mating rod away from the connecting rod is in conflict with the cam.

[0021] On the other hand, an experimental method for simulating soybean salt-alkali tolerance is as follows:

[0022] S1. Pre-burying soybeans: pre-bury soybeans in each experimental chamber, and transport saline-alkali solutions of different concentrations to the water pipe through a delivery pipe. The saline-alkali solution in the water pipe then enters the soil in the experimental chamber through the water port;

[0023] S2. Hole adjustment: When cleaning the water pipe, the water baffle is driven to rotate 90 degrees to connect the chambers in the water pipe, and the baffle slides on the inner wall of the water pipe to block the water hole;

[0024] S3. Crystal removal: The pull rope pulls the slider to slide in the working tube, and the cleaning ring on the slider will move in the water pipe. During the movement, the driving block on the driving ring cooperates with the thread groove and can also rotate itself to further clean the inner wall of the water pipe.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] First, the present invention ensures that the temperature and humidity in all chambers are highly consistent by setting up multiple experimental chambers in the experimental box and setting up delivery pipes with consistent placement. This consistency eliminates experimental errors caused by environmental differences, makes experimental results in different experimental chambers more comparable, and enhances the accuracy of experimental data.

[0027] 2. The present invention can clean and filter the crystals produced inside the water pipe by setting up a cleaning mechanism, thereby ensuring the cleanliness of the inside of the water pipe and the effectiveness of the water pipe in transporting saline-alkali solutions. By cleaning the crystals in time, the physical and chemical damage of the crystals to the water pipe can be reduced, the service life of the water pipe can be extended, and the maintenance and replacement costs can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the structure inside the experimental box of the present invention.

[0031] Figure 3 It is a schematic diagram of the structure inside the water conduit of the present invention.

[0032] Figure 4 It is a schematic diagram of the position structure of the cleaning ring of the present invention.

[0033] Figure 5 It is a schematic structural diagram of the cleaning ring of the present invention.

[0034] Figure 6 It is a schematic diagram of the structure of the present invention driving the slider to move.

[0035] Figure 7 It is a structural schematic diagram of the present invention for blocking the water guide hole.

[0036] Figure 8 It is a schematic diagram of the structure inside the filter box of the present invention.

[0037] Fig. 9 This is a schematic diagram of the structure of the working box and linkage parts of the present invention.

[0038] In the figure, 1, experimental box; 10, experimental chamber; 11, water pipe; 12, conveying pipe; 13, water guide hole; 14, dividing shaft; 15, water baffle; 2, cleaning structure; 20, working pipe; 21, slider; 22, cleaning member; 220, cleaning ring; 221, slide groove; 222, limit block; 23, driving member; 230, driving block; 231, threaded groove; 24, reciprocating member; 240, pull rope; 241, working box; 242, winding roller one; 243, winding roller two; 3, driving member; 30, driving gear; 31, half gear; 4, blocking member; 40, matching groove; 41, blocking plate; 50, connecting pipe; 51, connecting rod; 52, cam; 53, matching rod; 60, filter box; 61, filter plate; 7, linkage member; 70, linkage shaft. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-Figure 9 Embodiments of the present invention are described in detail.

[0040] The embodiment of the present application discloses an experimental device and method for simulating soybean salt-alkali tolerance. The present invention is mainly used in soybean salt-alkali tolerance experiments, aiming to solve the problem of basic condition deviation between single experimental subjects, and further technically solves the difficult problem of insufficient crystallization cleaning of pipelines for transporting saline-alkali liquid in the prior art.

[0041] Embodiment 1:

[0042] Reference Figure 1 , Figure 2 and Figure 3 As shown, the experimental box 1 includes a plurality of experimental chambers 10 divided by partitions. The experimental chambers 10 are filled with soil for carrying soybeans for salt-alkali resistance experiments. Since the plurality of experimental chambers 10 are arranged in the experimental box 1, the humidity and other objective conditions inside each experimental chamber 10 are the same. This makes the only real variable in the plurality of experimental chambers 10 be saline-alkali solutions of different concentrations, thereby ensuring the accuracy of salt-alkali resistance observation of soybeans in soils of different salinity and alkalinity during the experiment.

[0043] A water pipe 11 penetrating multiple experimental chambers 10 is installed on the experimental box 1. Multiple delivery pipes 12 connected to the water pipe 11 are installed above the experimental box 1. The water pipe 11 is provided with multiple water holes 13 corresponding to the centers of the experimental chambers 10. Saline-alkali solutions of different concentrations will enter the water pipe 11 through the delivery pipe 12, and then enter the corresponding experimental chamber 10 through the water holes 13 on the water pipe 11, and the positions of the corresponding water holes 13 of each experimental chamber 10 are consistent.

[0044] The function of the water pipe 11 is to connect the various delivery pipes 12 and synchronously deliver the saline-alkali solution to each experimental chamber 10 through the water holes 13, so as to ensure that the soil inside each experimental chamber 10 can receive the saline-alkali solution in equal amounts and ensure the consistency of its moisture.

[0045] A dividing shaft 14 that passes through the water pipe 11 is rotatably arranged inside the water pipe 11 at the junction of the experimental chamber 10. A water retaining plate 15 is arranged inside the water pipe 11 on the dividing shaft 14. In the initial state, the water retaining plate 15 will divide the water pipe 11 into multiple chambers. Saline-alkali solutions of different concentrations are placed in different chambers. The water retaining plate 15 prevents the saline-alkali solutions in the chambers in the water pipe 11 from exchanging, which would affect the effect of experimental monitoring.

[0046] The experimental box 1 is equipped with a cleaning structure 2 specifically for cleaning the water pipe 11. In view of the particularity of the saline-alkali solution, after a period of experiment, saline-alkali crystals are easily generated in the water pipe 11, affecting the transportation of the solution. For this reason, a cleaning mechanism is set to effectively remove the crystals in the water pipe 11.

[0047] Reference Figure 3 , Figure 4 and Figure 5 As shown, it is a schematic diagram of the structure for cleaning the water pipe 11; specifically, the cleaning structure 2 includes a working pipe 20, which is arranged above the water pipe 11 and communicated with the inside of the water pipe 11. A plurality of sliders 21 are slidably arranged inside the working pipe 20, and the sliders 21 are slidably arranged between two adjacent water baffles 15, and one end of the slider 21 passes through the working pipe 20 and extends into the water pipe 11, and a cleaning member 22 for cleaning the inside of the water pipe 11 is arranged on the slider 21. The slider 21 slides inside the working pipe 20, and moves with the cleaning member 22 inside the water pipe 11, so as to remove the crystals generated on the side wall of the water pipe 11.

[0048] The cleaning member 22 includes a cleaning ring 220, and slide grooves 221 are symmetrically opened on both sides of the cleaning ring 220. L-shaped limit blocks 222 are symmetrically arranged on the slider 21. The cleaning ring 220 is rotatably arranged between the two limit blocks 222. When the slider 21 moves, it will move the cleaning ring 220 inside the water pipe 11, and the crystals on the inner wall of the water pipe 11 will be removed by the cleaning ring 220.

[0049] Reference Figure 4 As shown, it is a schematic diagram of the structure for driving the cleaning ring 220 to rotate; specifically, a driving member 23 for driving the cleaning ring 220 to rotate is also provided inside the water pipe 11;

[0050] The driving member 23 includes a driving block 230. A thread groove 231 is provided inside the water pipe 11. The driving block 230 is slidably disposed in the thread groove 231. When the cleaning ring 220 moves with the slider 21, the driving block 230 on the cleaning ring 220 is closely matched with the thread groove 231, driving the cleaning ring 220 to rotate, thereby enhancing the friction between the cleaning ring 220 and the inner wall of the water pipe 11 and improving the efficiency of crystal removal.

[0051] Reference Figure 4 , Figure 5 and Figure 6 As shown, it is a schematic diagram of the structure that drives the slider 21 to move back and forth; specifically, the experimental box 1 is also provided with a reciprocating member 24 that drives the slider 21 to slide inside the working tube 20, and the reciprocating member 24 includes a pull rope 240. Multiple sliders 21 are interconnected by the pull rope 240. Working boxes 241 are installed at both ends of the experimental box 1 in the width direction. Winding roller 1 242 and winding roller 2 243 are rotatably installed in the two working boxes 241 respectively, and winding roller 2 243 is arranged in the working box 241 through a spiral spring.

[0052] An actuating member 3 for driving the winding roller 242 to rotate is arranged in the working box 241 opposite to the winding roller 242. The actuating member 3 includes an actuating gear 30, which is arranged on the output shaft of the winding roller 242. A half gear 31 cooperating with the actuating gear 30 is also rotatably arranged in the working box 241.

[0053] The half gear 31 drives the driving gear 30 to rotate, thereby driving the winding roller 1 242 to rotate. The pull rope 240 will be gradually wound on the winding roller 1 242 under the action of the winding roller 1 242, and then the pull rope 240 drives the adjacent slider 21 to slide in the working tube 20, and the other adjacent sliders 21 will move synchronously. At this time, the pull rope 240 close to the winding roller 243 will pull the winding roller 243 to rotate. During the rotation, the vortex spring accumulates force. When the half gear 31 is wound at a certain angle, it will release the engagement with the driving gear 30. At this time, the winding roller 1 242 loses the driving force, and the winding roller 243 pulls the slider 21 in the reverse direction under the action of the vortex spring, driving the slider 21 to slide in the reverse direction with the cleaning ring 220.

[0054] When the half gear 31 meshes with the driving gear 30 again, the slider 21 will be pulled again by the pull rope 240, and the slider 21 can move back and forth with the cleaning ring 220 inside the water pipe 11 in this way, thereby improving the effect of cleaning the crystals inside the water pipe 11.

[0055] Reference Figure 7As shown, that is, a structural schematic diagram of blocking the water hole 13 when cleaning the water pipe 11; specifically, a barrier 4 for blocking the water hole 13 is also provided inside the experimental box 1. When the water pipe 11 needs to be cleaned, the water hole 13 needs to be blocked to prevent the moisture in the water pipe 11 from entering the soil, changing the moisture in the soil, and affecting the observation effect of the experiment.

[0056] The blocking member 4 includes a matching groove 40. The water pipe 11 is provided with a matching groove 40 corresponding to the water guide hole 13 along its length direction. A blocking plate 41 is slidably provided inside the matching groove 40. If the water pipe 11 needs to be cleaned, the blocking plate 41 will slide smoothly in the matching groove 40 to effectively block the water guide hole 13.

[0057] Reference Figure 7 As shown, it is a schematic diagram of the structure that drives the baffle plate 41 to slide; specifically, a connecting pipe 50 with the same extension direction as the water pipe 11 is also provided below the water pipe 11 inside the experimental box 1, a connecting rod 51 is installed at the bottom of the baffle plate 41, the dividing shaft 14 passes through the water pipe 11 and is rotatably set in the connecting pipe 50, a cam 52 is installed at one end of the dividing shaft 14 located in the connecting pipe 50, an L-shaped matching rod 53 is provided on the connecting rod 51, and the matching rod 53 is slidably set in the connecting pipe 50 through a push spring, and the end of the matching rod 53 away from the connecting rod 51 is in conflict with the cam 52.

[0058] It is worth noting that the split shaft 14 rotates 90 degrees, and at the same time, in the initial state, the angle between the protruding end of the cam 52 and the matching rod 53 is also 90 degrees. As the split shaft 14 rotates, the cam 52 drives the matching rod 53 to slide in the connecting tube 50, and then the matching rod 53 pushes the connecting rod 51 to slide in the connecting tube 50, and finally the connecting rod 51 pulls the blocking plate 41 to slide on the inner wall of the water pipe 11, completing the blocking of the water guide hole 13.

[0059] When the dividing shaft 14 rotates, it means that the water baffle 15 has to rotate 90 degrees, driving the various chambers in the water pipe 11 to communicate. At this time, the water pipe 11 is connected with clean water to clean the water pipe 11, and the water hole 13 is blocked during the rotation of the water baffle 15 to prevent water from flowing out.

[0060] Reference Figure 8 As shown, it is a schematic diagram of the structure for filtering the cleaned water; specifically, a filter box 60 is installed on one side of the experimental box 1, and both ends of the water pipe 11 are connected to the upper and lower parts of the filter box 60 respectively, and a filter plate 61 is arranged inside the filter box 60.

[0061] The filter box 60 is equipped with a water pump, which is used to extract the water at the bottom and send it to the water pipe 11. During the cleaning process of the water pipe 11, the impurities generated will flow into the upper part of the filter box 60 through the other end, and then under the action of gravity, these impurities will pass through the filter plate 61 and be intercepted, and the filtered clean water will be pumped back to the water pipe 11 by the water pump, thereby realizing the recycling of water resources and effectively reducing environmental pollution.

[0062] Embodiment 2:

[0063] On the basis of the first embodiment, in order to further enhance the coordination between the various devices, a linkage member 7 is also proposed, which can achieve multiple technical effects through a single drive, thereby improving system efficiency and reducing costs.

[0064] Reference Fig. 9 As shown, it is a structural schematic diagram of using a single drive to complete multiple links; specifically, the linkage member 7 includes a linkage shaft 70, which is rotatably set on the filter box 60, one end of the linkage shaft 70 is connected to the output shaft of the half gear 31 through a bevel gear, and the other end is connected to one of the split shafts 14 through a belt.

[0065] It should be noted that the half gear 31 and its output shaft are connected through ratchet teeth, so that when the output shaft of the half gear 31 rotates in the forward direction, it can drive the slider 21 to move, and the cleaning ring 220 on the slider 21 cleans the water pipe 11. When the output shaft of the half gear 31 rotates in the reverse direction, it will not drive the half gear 31 to rotate, and under the action of the bevel gear, it drives the linkage shaft 70 to rotate, and the rotation of the linkage shaft 70 can drive the split shaft 14 to rotate through the belt. The multiple split shafts 14 are connected by sprocket chains and rotate synchronously, thereby achieving the purpose of cleaning the inside of the water pipe 11 and sealing the inside of the water retaining pipe through a single drive.

[0066] During operation: Step 1: In the experiment, soybean seeds are first pre-buried in different experimental chambers 10 of the experimental box 1, and then saline-alkali solutions of different concentrations are transported to the water guide pipe 11 through the delivery pipe 12. These solutions enter the soil of the experimental chamber 10 through the water guide port to simulate the soil environment with different salinity and alkali concentrations. By observing the germination of soybean seeds in these different saline-alkali soils, the tolerance of soybeans to salinity and alkali stress can be evaluated.

[0067] Step 2: When the water pipe 11 needs to be cleaned, the output shaft of the half gear 31 is driven in reverse, and the linkage shaft 70 rotates accordingly under the transmission of the bevel gear. The linkage shaft 70 drives the split shaft 14 to rotate through the belt, and the water baffle 15 completes a 90-degree rotation, so that the chambers in the water pipe 11 are interconnected. At the same time, the cam 52 on the split shaft 14 pushes the matching rod 53 to slide in the connecting pipe 50, and then pulls the blocking plate 41 to slide along the inner wall of the water pipe 11 to achieve the blocking of the water hole 13.

[0068] Step 3: Then drive the output shaft of the half gear 31 to rotate forward, the half gear 31 drives the driving gear 30 to rotate, and then the winding roller 242 rotates synchronously, the pull rope 240 will be gradually wound on the winding roller 242, the pull rope 240 pulls the slider 21 to slide in the working tube 20, and the cleaning ring 220 on the slider 21 will move in the water pipe 11 to remove the crystals on the inner wall of the water pipe 11

[0069] Step 4: Then drive the output shaft of the half gear 31 to rotate forward, the half gear 31 rotates with the driving gear 30, and then the winding roller 1 242 rotates synchronously, the pull rope 240 is gradually wound on the winding roller 1 242, the pull rope 240 pulls the slider 21 to slide in the working tube 20, and the cleaning ring 220 on the slider 21 moves in the water pipe 11. When the half gear 31 is not engaged with the driving gear 30, the winding roller 1 242 loses the driving force, and the winding roller 2 243 pulls the slider 21 in the reverse direction under the action of the volute spring, driving the slider 21 to slide with the cleaning ring 220 in the reverse direction, and the crystals on the inner wall of the water pipe 11 are removed reciprocatingly.

[0070] Step 5: During the movement of the cleaning ring 220 inside the water pipe 11, the driving block 230 on the driving ring cooperates with the threaded groove 231, so that the driving ring can also rotate during the movement, thereby increasing the friction between the cleaning ring 220 and the water pipe 11, and further enhancing the effect of cleaning the inner wall of the water pipe 11.

[0071] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive.

[0072] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An experimental device for simulating soybean salt-alkali tolerance, comprising an experimental box (1), characterized in that: The experimental box (1) is divided into a plurality of experimental chambers (10) by a partition, a water pipe (11) penetrating the plurality of experimental chambers (10) is installed on the experimental box (1), a plurality of delivery pipes (12) connected to the water pipe (11) are installed above the experimental box (1), and a plurality of water guide holes (13) corresponding to the centers of the experimental chambers (10) are opened on the water pipe (11); A split shaft (14) penetrating the water pipe (11) is rotatably arranged inside the water pipe (11) at the junction of the experimental chamber (10); a water baffle (15) is arranged inside the water pipe (11) on the split shaft (14); and a cleaning structure (2) for cleaning the water pipe (11) is arranged inside the experimental box (1).

2. The experimental device for simulating soybean salt-alkali tolerance according to claim 1, characterized in that: The cleaning structure (2) comprises a working pipe (20), the working pipe (20) being arranged above the water pipe (11) and being communicated with the inside of the water pipe (11), a plurality of sliding blocks (21) being slidably arranged inside the working pipe (20), the sliding blocks (21) being slidably arranged between two adjacent water baffles (15), and one end of the sliding block (21) passing through the working pipe (20) and extending into the water pipe (11), the sliding block (21) being provided with a cleaning member (22) for cleaning the inside of the water pipe (11).

3. The experimental device for simulating soybean salt-alkali tolerance according to claim 2, characterized in that: The cleaning member (22) comprises a cleaning ring (220), two sides of which are symmetrically provided with sliding grooves (221), the slider (21) is symmetrically provided with L-shaped limiting blocks (222), and the cleaning ring (220) is rotatably arranged between the two limiting blocks (222).

4. The experimental device for simulating soybean salt-alkali tolerance according to claim 3, characterized in that: A driving member (23) for driving the cleaning ring (220) to rotate is also provided inside the water guide pipe (11); The driving member (23) comprises a driving block (230), a thread groove (231) is provided inside the water conduit (11), and the driving block (230) is slidably disposed in the thread groove (231).

5. The experimental device for simulating soybean salt-alkali tolerance according to claim 2, characterized in that: The experimental box (1) is also provided with a reciprocating member (24) for driving the slider (21) to slide inside the working tube (20), and the reciprocating member (24) includes a pull rope (240). Multiple sliders (21) are connected by the pull rope (240). Working boxes (241) are installed at both ends of the experimental box (1) in the width direction. Winding roller 1 (242) and winding roller 2 (243) are rotatably installed in the two working boxes (241), and winding roller 2 (243) is arranged in the working box (241) through a spiral spring.

6. The experimental device for simulating soybean salt-alkali tolerance according to claim 5, characterized in that: An actuating member (3) for driving the winding roller (242) to rotate is arranged in a working box (241) opposite to the winding roller (242); the actuating member (3) comprises an actuating gear (30) which is arranged on an output shaft of the winding roller (242); and a half gear (31) which cooperates with the actuating gear (30) is also rotatably arranged in the working box (241).

7. The experimental device for simulating soybean salt-alkali tolerance according to claim 1, characterized in that: The experimental box (1) is also provided with a blocking member (4) for blocking the water guide hole (13), the blocking member (4) comprising a matching groove (40), the water guide pipe (11) is provided with matching grooves (40) corresponding to the water guide holes (13) along its length direction, and a blocking plate (41) is slidably provided inside the matching groove (40).

8. The experimental device for simulating soybean salt-alkali tolerance according to claim 7, characterized in that: A connecting pipe (50) extending in the same direction as the water pipe (11) is also provided inside the experimental box (1), below the water pipe (11); a connecting rod (51) is installed at the bottom of the baffle plate (41); the dividing shaft (14) passes through the water pipe (11) and is rotatably arranged in the connecting pipe (50); a cam (52) is installed at one end of the dividing shaft (14) located in the connecting pipe (50); an L-shaped matching rod (53) is provided on the connecting rod (51); the matching rod (53) is slidably arranged in the connecting pipe (50) through a push spring; and one end of the matching rod (53) away from the connecting rod (51) is in conflict with the cam (52).

9. An experimental method for simulating soybean salt-alkali tolerance, comprising an experimental device for simulating soybean salt-alkali tolerance according to any one of claims 1 to 8, characterized in that: The experimental method for simulating soybean salt-alkali tolerance is as follows: S1. Pre-burying soybeans: pre-bury soybeans in each experimental box (1), and transport saline-alkali solutions of different concentrations to the water pipe (11) through the transport pipe (12). The saline-alkali solutions in the water pipe (11) then enter the soil in the experimental chamber (10) through the water inlet; S2, hole adjustment: when cleaning the water pipe (11), the water baffle plate (15) is driven to rotate 90 degrees, so that the chambers in the water pipe (11) are connected, and the blocking plate (41) slides on the inner wall of the water pipe (11) synchronously to block the water hole (13); S3, crystal removal: the pull rope (240) pulls the slider (21) to slide inside the working tube (20), and the cleaning ring (220) on the slider (21) moves inside the water pipe (11). During the movement, the driving block (230) on the driving ring cooperates with the thread groove (231) and can also rotate itself to further clean the inner wall of the water pipe (11).

Images