Root box experimental device for plant rhizosphere environment research

Abstract

The invention discloses a root box experiment device for plant rhizosphere environment research, and belongs to the field of plant root box experiments. A root box experiment device for plant rhizosphere environment research comprises an experiment box, an inner cavity of the experiment box is divided into three groups of experiment cabins through partition plates, planting plates are inserted into the experiment cabins, the root box experiment device further comprises liquid dropping boxes, the liquid dropping boxes are rotationally connected to the tops of inner cavities of the experiment cabins, and the planting plates are inserted into the experiment cabins. A liquid guide part for circularly conveying a nutrient solution into the liquid dropping box is arranged at the top of the experiment box; the oxygenation disc is rotationally connected to the bottom of the inner cavity of the experiment bin; through rotation of the liquid guide blades, a nutrient solution in the experiment bin is pumped into the liquid dropping box and then flows back into the experiment bin, circular flowing of the nutrient solution is achieved, meanwhile, the liquid dropping box is driven to rotate, the dropped nutrient solution is evenly sprayed into the experiment bin, and therefore it is ensured that the nutrient solution makes uniform contact with plants, and the experiment efficiency is improved. A good growth environment is provided for the plant rhizosphere, so that the accuracy of an experimental result is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plant rhizobox experiments, and particularly to a rhizobox experimental device for plant rhizosphere environment research. Background Art

[0002] The plant rhizosphere is an important area of strong interaction among plant roots, rhizosphere microorganisms, soil or nutrient solution and their surrounding environmental factors, and is the central area for the exchange of nutrients and energy between roots and soil or nutrient solution; in order to deeply understand the complex relationship between plants and the environment, it is necessary to conduct research experiments on the plant rhizosphere, and then master the growth characteristics of the plant rhizosphere, so as to provide scientific basis and technical support for agricultural production, ecological protection and environmental pollution control.

[0003] When conducting research experiments on the plant rhizosphere environment, it mainly includes hydroponics and soil cultivation, and hydroponics is more convenient for precise nutrient supply and is also convenient for observation and monitoring. Therefore, hydroponics is mostly selected for research experiments.

[0004] At present, in the research experiment on the plant rhizosphere by hydroponics, there is a situation of uneven nutrient solution distribution, resulting in eutrophication or negative eutrophication in the local plant rhizosphere; moreover, during plant growth, the rhizosphere will continuously consume the dissolved oxygen in the nutrient solution, causing an oxygen-deficient state in the local rhizosphere area, and then leading to the rotting of plant roots; the above will all cause some plants in the experiment to not grow normally, reducing the accuracy of the experimental results; therefore, a rhizobox experimental device for plant rhizosphere environment research is proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art that the nutrient solution distribution is uneven, and the local rhizosphere area is prone to an oxygen-deficient state, resulting in some plants in the experiment not growing normally and reducing the accuracy of the experimental results, and to propose a rhizobox experimental device for plant rhizosphere environment research.

[0006] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0007] A rhizobox experimental device for plant rhizosphere environment research, including an experimental box, the inner cavity of the experimental box is divided into three groups of experimental compartments by a partition board, and a planting board is inserted in each experimental compartment. It further includes: a drip box, the drip box is rotatably connected to the top of the inner cavity of the experimental compartment, and a liquid guiding part for circulating and transporting the nutrient solution into the drip box is arranged on the top of the experimental box; an oxygenation disk, the oxygenation disk is rotatably connected to the bottom of the inner cavity of the experimental compartment, and a gas guiding part for transporting oxygen into the oxygenation disk is arranged on the experimental box.

[0008] In order to make the nutrient solution evenly distributed and ensure the accuracy of the experiment, preferably, the liquid conducting part includes three groups of liquid conducting boxes, and the three groups of liquid conducting boxes are respectively fixed on the top of the experimental box located above the dripping box, and liquid conducting blades are rotatably connected in the liquid conducting box. The upper part of the side wall of the liquid conducting box is fixed and connected with a liquid suction tube, the other end of the liquid suction tube is connected to the bottom of the inner cavity of the experimental chamber, and a filter is fixedly connected at the input end of the liquid suction tube, the bottom of the liquid conducting box is fixed and connected with a liquid conducting tube, the bottom end of the liquid conducting tube extends through the dripping box, and a plurality of groups of dripping holes are evenly spaced at the bottom of the dripping box.

[0009] Furthermore, a mounting frame is fixedly connected to the top of the experimental box, a driving motor is fixedly connected to the top of the mounting frame, an output shaft of the driving motor is fixedly connected to the top of the rotating shaft of one group of liquid guiding blades, and the rotating shafts of the three groups of liquid guiding blades are connected through a pulley group.

[0010] Furthermore, a driven gear ring is fixedly connected to the inner wall of the drip tank, a reduction gear is rotatably connected to the top of the inner cavity of the experimental chamber, and the reduction gear is located in the drip tank. The bottom end of the rotating shaft of the liquid guide blade passes through the drip tank and is fixedly connected to a driving gear, and the driving gear, the reduction gear and the driven gear ring are meshingly connected.

[0011] In order to meet the needs of healthy plant growth and ensure the stability of experimental conditions, preferably, the rotating shaft of the oxygenating disk passes through the bottom of the experimental box and is rotatably connected to an air guide ring, the air guide ring is fixed to the bottom of the experimental box, and multiple groups of air guide rings are connected by air guide pipes. The oxygenating disk is connected to the inner cavity of the air guide ring through its rotating shaft cavity, and multiple groups of oxygenation holes are evenly spaced on the top of the oxygenating disk.

[0012] Furthermore, the air guide part includes a piston box, which is fixed on the top of the experimental box. Piston plates are slidably connected to both sides of the inner cavity of the piston box. Push-pull rods are rotatably connected to the outer wall of the piston plate. The other ends of the two groups of push-pull rods are respectively rotatably connected to the tops of two groups of rotating wheels of the pulley group. An inflation tube is fixed and connected to the middle part of the side wall of the piston box. The other end of the inflation tube is connected to the air guide tube, and a one-way valve is arranged in the inflation tube.

[0013] Furthermore, the bottom of the piston box is fixed and connected to an air intake pipe, and a one-way valve is arranged in the air intake pipe.

[0014] To facilitate the uniform distribution of oxygen in the nutrient solution, preferably, a horizontal rotating shaft is rotatably connected to the bottom of the experimental box, a vertical rotating shaft is rotatably connected to the side wall of the experimental box, the vertical rotating shaft and the end of the horizontal rotating shaft are connected by a first bevel gear set, the horizontal rotating shaft and the bottom end of the rotating shaft of the oxygenation disc are connected by a second bevel gear set, a friction disc is fixedly connected to the vertical rotating shaft, and the friction disc penetrates into the experimental chamber and fits against the outer wall of the drip tank.

[0015] To facilitate experimental observation, preferably, a transparent window is fixedly connected to the bottom of the side wall of the experimental box, and a transparent cover is rotatably connected to the upper part of the side wall of the experimental box.

[0016] To facilitate the control of experimental variables, preferably, an experimental module is fixedly connected to the experimental chamber, and the experimental module specifically includes a temperature sensor, an oxygen concentration sensor, and a pH value sensor.

[0017] Compared with the prior art, the present invention provides a root box experimental device for plant rhizosphere environment research, having the following beneficial effects:

[0018] 1. For the root box experimental device for plant rhizosphere environment research, through the rotation of the liquid guiding blades, the nutrient solution in the experimental chamber is pumped into the drip tank and then flows back into the experimental chamber, realizing the circulating flow of the nutrient solution. At the same time, the drip tank is driven to rotate, so that the dripping nutrient solution is evenly sprayed in the experimental chamber, thereby ensuring the uniform contact between the nutrient solution and the plants, providing a good growth environment for the plant rhizosphere, and thus significantly improving the accuracy of the experimental results.

[0019] 2. For the root box experimental device for plant rhizosphere environment research, through the reciprocating movement of the piston plate in the piston box, the external gas is continuously compressed and then filled into the oxygenation disc, and finally filled into the nutrient solution through the oxygenation holes, increasing the oxygen content inside the nutrient solution, preventing the formation of an anaerobic environment at the plant rhizosphere, promoting the growth of the plant rhizosphere, providing a more reliable experimental environment, and improving the accuracy of the experimental results.

[0020] 3. For the root box experimental device for plant rhizosphere environment research, when the drip tank rotates, by the action of friction, with the settings of the friction disc, vertical rotating shaft, first bevel gear set, horizontal rotating shaft, and second bevel gear set, the oxygenation disc rotates in the nutrient solution in the experimental chamber, so that the filled oxygen can be evenly mixed with the nutrient solution and evenly contact the plant rhizosphere on the planting plate, ensuring the healthy growth of the plants and further improving the accuracy of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The overall structural schematic diagram of a root box experimental device for plant rhizosphere environment research proposed by the present invention Figure 1;

[0022] Figure 2 Schematic diagram of the overall structure of a rhizobox experimental device for plant rhizosphere environment research proposed by the present invention Figure 2 ;

[0023] Figure 3 Schematic diagram of the partial half-sectional structure of a rhizobox experimental device for plant rhizosphere environment research proposed by the present invention;

[0024] Figure 4 For a rhizobox experimental device for plant rhizosphere environment research proposed by the present invention Figure 3 Enlarged structure schematic diagram of area A therein;

[0025] Figure 5 For a rhizobox experimental device for plant rhizosphere environment research proposed by the present invention Figure 3 Enlarged structure schematic diagram of area B therein;

[0026] Figure 6 Schematic diagram of the side view partial sectional structure of a rhizobox experimental device for plant rhizosphere environment research proposed by the present invention;

[0027] Figure 7 For a rhizobox experimental device for plant rhizosphere environment research proposed by the present invention Figure 6 Enlarged structure schematic diagram of area C therein;

[0028] Figure 8 Schematic diagram of the internal structure of the piston box of a rhizobox experimental device for plant rhizosphere environment research proposed by the present invention.

[0029] In the figure: 1. experimental box; 2. experimental chamber; 21. planting plate; 22. reduction gear; 23. transparent window; 24. transparent cover; 3. drip box; 31. drip hole; 32. driven gear ring; 4. oxygenation disk; 41. oxygenation hole; 5. liquid guide box; 51. liquid guide blade; 511. driving gear; 52. liquid suction pipe; 521. filter screen; 53. liquid guide pipe; 54. mounting frame; 541. driving motor; 542. pulley group; 6. air guide ring; 61. air guide pipe; 7. piston box; 71. piston plate; 72. push-pull rod; 73. air charging pipe; 74. air inlet pipe; 8. horizontal rotating shaft; 81. vertical rotating shaft; 82. first bevel gear set; 83. second bevel gear set; 84. friction disk; 9. experimental module. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] Embodiment:

[0033] Referring to Figures 1 - 8 , a rhizobox experimental device for plant rhizosphere environment research, comprising an experimental box 1. The inner cavity of the experimental box 1 is divided into three groups of experimental compartments 2 by a partition. A planting plate 21 is inserted into each group of experimental compartments 2. Limiting strips are provided on both sides of the inner wall of the experimental compartment 2. The limiting strips are used to carry the planting plate 21 and limit its placement height. It further includes: a drip tank 3, which is rotatably connected to the top of the inner cavity of the experimental compartment 2, and a liquid guiding part for circulating and transporting nutrient solution into the drip tank 3 is provided on the top of the experimental box 1; an oxygenation disk 4, which is rotatably connected to the bottom of the inner cavity of the experimental compartment 2, and a gas guiding part for transporting oxygen into the oxygenation disk 4 is provided on the experimental box 1.

[0034] Through the setting of the above structure, the circulating flow of the nutrient solution in the experimental compartment 2 can be realized, and at the same time, oxygen is filled into the nutrient solution in the experimental compartment 2, so as to achieve the uniform contact of the nutrient solution and oxygen with the plant rhizosphere, effectively improving the accuracy of the experimental results.

[0035] Referring to Figure 3 、 Figure 6 and Figure 7The liquid guiding part includes three groups of liquid guiding boxes 5, which are respectively fixed on the top of the experimental box 1 located above the dripping tank 3. A liquid guiding blade 51 is rotatably connected in the liquid guiding box 5. The upper part of the side wall of the liquid guiding box 5 is fixed and connected with a liquid extraction tube 52. The other end of the liquid extraction tube 52 is connected to the bottom of the inner cavity of the experimental chamber 2, and a filter screen 521 is fixedly connected at the input end of the liquid extraction tube 52. The filter screen 521 is used to filter impurities in the extracted nutrient solution to prevent the broken plant roots or other impurities from clogging the subsequent equipment, thereby ensuring the circulation effect of the nutrient solution. The bottom of the liquid guiding box 5 is fixed and connected with a liquid guiding tube 53. The bottom end of the liquid guiding tube 53 extends through and extends into the dripping tank 3, and the dripping tank 3 is provided with a plurality of groups of drip holes 31 at equal intervals at the bottom; a mounting frame 54 is fixedly connected to the top of the experimental box 1, a driving motor 541 is fixedly connected to the top of the rotating shaft of one group of liquid guiding blades 51, and the rotating shafts of the three groups of liquid guiding blades 51 are connected by a pulley group 542; a driven gear ring 32 is fixedly connected to the inner wall of the drip box 3, a reduction gear 22 is rotatably connected to the top of the inner cavity of the experimental chamber 2, and the reduction gear 22 is located in the drip box 3, the bottom end of the rotating shaft of the liquid guiding blade 51 passes through the drip box 3 and is fixedly connected to the driving gear 511, and the driving gear 511, the reduction gear 22 and the driven gear ring 32 are meshed and connected.

[0036] Through the arrangement of the above structure, the driving motor 541 is turned on, so that under the transmission cooperation of the pulley group 542, the three groups of liquid guiding blades 51 are respectively driven to rotate in their corresponding liquid guiding boxes 5, thereby generating a suction effect on the side of the liquid guiding box 5 close to the liquid extraction tube 52, so that the nutrient solution in the experimental chamber 2 is sucked into the liquid guiding box 5 along the liquid extraction tube 52, and then enters the dripping box 3 along the liquid guiding tube 53, and finally drips from the top of the plant into the experimental chamber 2 along the dripping hole 31, so that the nutrient solution circulates and realizes the uniform contact between the nutrient solution in different areas of the experimental chamber 2 and the root zone of the plant, reduces the phenomenon of local eutrophication of the root zone of the plant, ensures the healthy growth of the plant, and effectively improves the accuracy of the experimental results; at the same time, the meshing relationship between the driving gear 511, the reduction gear 22 and the driven gear ring 32 will synchronously drive the dripping box 3 to rotate in the experimental chamber 2, so that the dripping nutrient solution is evenly sprayed in the experimental chamber 2, further ensuring the uniform contact between the nutrient solution and the plant, and significantly improving the accuracy of the experimental results.

[0037] Reference Figures 3 - 5 and Figure 8, wherein the rotating shaft of the oxygenating disk 4 passes through the bottom of the experimental box 1 and is rotatably connected with an air guide ring 6, the air guide ring 6 is fixed at the bottom of the experimental box 1, and multiple groups of air guide rings 6 are connected through an air guide pipe 61, the oxygenating disk 4 is connected with the inner cavity of the air guide ring 6 through its rotating shaft cavity, and multiple groups of oxygenating holes 41 are evenly spaced on the top of the oxygenating disk 4; the air guide part includes a piston box 7, the piston box 7 is fixed at the top of the experimental box 1, and piston plates 71 are slidably connected on both sides of the inner cavity of the piston box 7, and push-pull rods 72 are rotatably connected on the outer wall of the piston plate 71, and the other ends of the two groups of push-pull rods 72 are respectively rotatably connected to the tops of the two groups of rotating wheels of the pulley group 542, and an air filling pipe 73 is fixed and connected to the middle part of the side wall of the piston box 7, and the other end of the air filling pipe 73 is connected to the air guide pipe 61, and a one-way valve is arranged in the air filling pipe 73; the bottom of the piston box 7 is fixed and connected with an air inlet pipe 74, and a one-way valve is arranged in the air inlet pipe 74.

[0038] It should be noted that the one-way valve in the inflation pipe 73 can only allow the gas in the piston box 7 to be filled into the oxygenating disk 4 ; the one-way valve in the air inlet pipe 74 can only allow the external gas to be replenished into the piston box 7 .

[0039] Through the arrangement of the above structure, during the rotation of the pulley group 542, the push-pull rod 72 will drive the piston plate 71 to move back and forth in the piston box 7. When the piston plates 71 on both sides move toward the middle of the piston box 7 at the same time, the gas in the piston box 7 will be squeezed, and the one-way valve in the inflation tube 73 will be pushed open under the action of this air pressure, so that the compressed gas enters the oxygenating disk 4 along the inflation tube 73, the air guide tube 61, the air guide ring 6 and the rotating shaft cavity of the oxygenating disk 4, and finally is filled into the nutrient solution in the experimental chamber 2 through the oxygenating hole 41, thereby increasing the oxygen content in the nutrient solution, preventing the formation of an anaerobic environment at the root zone of the plant, promoting the growth of the plant root zone, providing a more reliable experimental environment, and ensuring the accuracy of the experimental results.

[0040] Reference Figures 1 - 3 Among them, the bottom of the experimental box 1 is rotatably connected with a horizontal rotating shaft 8, and the side wall of the experimental box 1 is rotatably connected with a vertical rotating shaft 81. The vertical rotating shaft 81 is connected to the end of the horizontal rotating shaft 8 through a first bevel gear set 82, and the horizontal rotating shaft 8 is connected to the bottom end of the rotating shaft of the oxygenating disk 4 through a second bevel gear set 83. A friction disk 84 is fixedly connected to the vertical rotating shaft 81, and the friction disk 84 penetrates into the experimental chamber 2 and fits against the outer wall of the drip box 3.

[0041] With the above structure set, when the drip box 3 rotates, due to the effect of friction, it will drive the friction disc 84 and the vertical rotating shaft 81 to rotate. At this time, under the transmission of the first bevel gear set 82, it will drive the horizontal rotating shaft 8 to rotate. Furthermore, under the transmission of the second bevel gear set 83, it will drive multiple groups of oxygenation discs 4 to rotate in their corresponding experimental chambers 2 at the same time, so that the oxygen filled can be evenly mixed with the nutrient solution and evenly contact the rhizosphere of the plants on the planting plate 21, ensuring the healthy growth of the plants and further improving the accuracy of the experimental results.

[0042] Refer to Figure 1 、 Figure 3 Among them, a transparent window 23 is fixedly connected to the bottom of the side wall of the experimental box 1, and a transparent cover 24 is rotatably connected to the upper part of the side wall of the experimental box 1; in this way, it is convenient to observe the rhizosphere of the growing plants and improves the convenience of experimental observation.

[0043] Refer to Figure 3 Among them, an experimental module 9 is fixedly connected in the experimental chamber 2. The experimental module 9 specifically includes a temperature sensor, an oxygen concentration sensor, and a pH value sensor; the specific model of the temperature sensor is HR-WZP, the specific model of the oxygen concentration sensor is OHR, and the specific model of the pH value sensor is LB-102. The above three are all existing mature technologies. In order to facilitate the experimenter to control the single variable in the experimental chamber 2, so as to conduct research experiments on the rhizosphere of plants under different environmental conditions, the representativeness of the experimental data is effectively improved.

[0044] Refer to Figures 1 - 8 In the present invention, when in use, first prepare the nutrient solution required for hydroponics of plants and pour them into the three experimental chambers 2 respectively, and control the height of the nutrient solution to be below the planting plate 21. Then plant the same batch of plants on the planting plates 21 in the three experimental chambers 2 respectively. Then, cooperate with the temperature sensor, the oxygen concentration sensor, and the pH value sensor to regulate the test environment in the three experimental chambers 2, so that there is only one single variable in the three experimental chambers 2 (specifically, it can be: different temperatures, different oxygen concentrations, different pH values). Then, the rhizosphere state of the plants can be observed at different growth stages of the plants, and thus the growth research experiment on the rhizosphere of plants under different environments can be completed.

[0045] During the growth process of plants, the driving motor 541 can be regularly turned on. Under the transmission and cooperation of the pulley group 542, it drives the three groups of liquid guiding blades 51 to rotate in their corresponding liquid guiding boxes 5 respectively, thereby generating a suction effect on the side of the liquid guiding box 5 close to the liquid extraction pipe 52. As a result, the nutrient solution in the experimental chamber 2 is sucked into the liquid guiding box 5 along the liquid extraction pipe 52, then enters the drip box 3 along the liquid guiding pipe 53, and finally drips back into the experimental chamber 2 from above the plants along the drip holes 31. In this way, the circulation of the nutrient solution is realized, the uniform contact between the nutrient solution in different areas of the experimental chamber 2 and the rhizosphere of plants is achieved, the phenomenon of local eutrophication in the rhizosphere of plants is reduced, the healthy growth of plants is ensured, and the accuracy of the experimental results is effectively improved. At the same time, by using the meshing relationship between the driving gear 511, the reduction gear 22 and the driven gear ring 32, the drip box 3 is synchronously driven to rotate in the experimental chamber 2, so that the dripping nutrient solution is evenly sprayed in the experimental chamber 2, further ensuring the uniform contact between the nutrient solution and the plants, and significantly improving the accuracy of the experimental results.

[0046] Moreover, during the rotation of the pulley group 542, the push-pull rod 72 drives the piston plate 71 to reciprocate in the piston box 7. When the two piston plates 71 move towards the middle of the piston box 7 at the same time, the gas in the piston box 7 is compressed, and under this air pressure, the one-way valve in the gas filling pipe 73 is pushed open, so that the compressed gas enters the oxygenation disk 4 along the gas filling pipe 73, the air guiding pipe 61, the air guiding ring 6 and the rotating shaft cavity of the oxygenation disk 4, and finally is filled into the nutrient solution in the experimental chamber 2 through the oxygenation holes 41, thereby increasing the oxygen content inside the nutrient solution, preventing the formation of an anaerobic environment at the rhizosphere of plants, promoting the growth of the rhizosphere of plants, providing a more reliable experimental environment, and ensuring the accuracy of the experimental results. In addition, when the drip box 3 rotates, due to the action of friction, the friction disk 84 and the vertical rotating shaft 81 are driven to rotate. At this time, under the transmission of the first bevel gear group 82, the horizontal rotating shaft 8 is driven to rotate, and then under the transmission of the second bevel gear group 83, multiple groups of oxygenation disks 4 are simultaneously driven to rotate in their corresponding experimental chambers 2, so that the filled oxygen can be evenly mixed with the nutrient solution and evenly contact the rhizosphere of the plants on the planting plate 21, ensuring the healthy growth of the plants and further improving the accuracy of the experimental results.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A root box experimental device for studying the rhizosphere environment of plants, comprising an experimental box (1), characterized in that: The inner cavity of the experimental box (1) is divided into three groups of experimental chambers (2) by a partition, each group of the experimental chambers (2) is plugged with a planting plate (21), and further comprises: A dripping box (3), the dripping box (3) is rotatably connected to the top of the inner cavity of the experimental chamber (2), and the top of the experimental chamber (1) is provided with a liquid guide portion for circulating and conveying nutrient solution into the dripping box (3); An oxygenating disk (4) is rotatably connected to the bottom of the inner cavity of the experimental chamber (2), and an air guide portion for conveying oxygen into the oxygenating disk (4) is provided on the experimental box (1).

2. A root box experimental device for plant rhizosphere environment research according to claim 1, characterized in that: The liquid guiding part comprises three groups of liquid guiding boxes (5), the three groups of liquid guiding boxes (5) are respectively fixed on the top of the experimental box (1) located above the dripping box (3), and a liquid guiding blade (51) is rotatably connected inside the liquid guiding box (5). A liquid extraction tube (52) is fixed and connected to the upper part of the side wall of the liquid guiding box (5), and the other end of the liquid extraction tube (52) is connected to the bottom of the inner cavity of the experimental chamber (2), and a filter screen (521) is fixedly connected at the input end of the liquid extraction tube (52). The bottom of the liquid guiding box (5) is fixed and connected to a liquid guiding tube (53), and the bottom end of the liquid guiding tube (53) extends through the dripping box (3), and a plurality of groups of dripping holes (31) are arranged at equal intervals at the bottom of the dripping box (3).

3. A root box experimental device for plant rhizosphere environment research according to claim 2, characterized in that: The top of the experimental box (1) is fixedly connected to a mounting frame (54), the top of the mounting frame (54) is fixedly connected to a driving motor (541), the output shaft of the driving motor (541) is fixedly connected to the top of the rotating shaft of one group of liquid guide blades (51), and the rotating shafts of the three groups of liquid guide blades (51) are connected by a belt pulley group (542).

4. A root box experimental device for plant rhizosphere environment research according to claim 2, characterized in that: The inner wall of the liquid dripping box (3) is fixedly connected to a driven gear ring (32); the top of the inner cavity of the experimental chamber (2) is rotatably connected to a reduction gear (22), and the reduction gear (22) is located in the liquid dripping box (3); the bottom end of the rotating shaft of the liquid guide blade (51) passes through the liquid dripping box (3) and is fixedly connected to a driving gear (511); the driving gear (511), the reduction gear (22) and the driven gear ring (32) are meshingly connected.

5. A root box experimental device for plant rhizosphere environment research according to claim 3, characterized in that: The rotating shaft of the oxygenating disk (4) passes through the bottom of the experimental box (1) and is rotatably connected to an air guide ring (6). The air guide ring (6) is fixed to the bottom of the experimental box (1). Multiple groups of the air guide rings (6) are connected through air guide pipes (61). The oxygenating disk (4) is connected to the inner cavity of the air guide ring (6) through its rotating shaft cavity, and multiple groups of oxygenating holes (41) are arranged at equal intervals on the top of the oxygenating disk (4).

6. A root box experimental device for plant rhizosphere environment research according to claim 5, characterized in that: The air guide portion comprises a piston box (7), the piston box (7) is fixed on the top of the experimental box (1), and piston plates (71) are slidably connected to both sides of the inner cavity of the piston box (7), and push-pull rods (72) are rotatably connected to the outer wall of the piston plate (71), and the other ends of the two groups of push-pull rods (72) are respectively rotatably connected to the tops of the two groups of rotating wheels of the pulley group (542), and an inflation tube (73) is fixed and connected to the middle part of the side wall of the piston box (7), and the other end of the inflation tube (73) is connected to the air guide tube (61), and a one-way valve is arranged in the inflation tube (73).

7. A root box experimental device for plant rhizosphere environment research according to claim 6, characterized in that: The bottom of the piston box (7) is fixed and connected to an air intake pipe (74), and a one-way valve is arranged in the air intake pipe (74).

8. A root box experimental device for plant rhizosphere environment research according to claim 5, characterized in that: The bottom of the experimental box (1) is rotatably connected to a horizontal rotating shaft (8), and the side wall of the experimental box (1) is rotatably connected to a vertical rotating shaft (81). The vertical rotating shaft (81) is connected to the end of the horizontal rotating shaft (8) through a first bevel gear set (82), and the horizontal rotating shaft (8) is connected to the bottom end of the rotating shaft of the oxygenation disk (4) through a second bevel gear set (83). A friction disk (84) is fixedly connected to the vertical rotating shaft (81), and the friction disk (84) penetrates into the experimental chamber (2) and fits with the outer wall of the drip box (3).

9. A root box experimental device for plant rhizosphere environment research according to claim 1, characterized in that: A transparent window (23) is fixedly connected to the bottom of the side wall of the experimental box (1), and a transparent cover (24) is rotatably connected to the upper part of the side wall of the experimental box (1).

10. A root box experimental device for plant rhizosphere environment research according to claim 1, characterized in that: An experimental module (9) is fixedly connected inside the experimental chamber (2), and the experimental module (9) specifically comprises a temperature sensor, an oxygen concentration sensor and a pH value sensor.

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