Corn drought resistance identification test device and method

Abstract

The invention discloses a corn drought resistance identification test device and method, and belongs to the field of drought resistance identification. A corn drought resistance identification test device comprises a test box, the interior of the test box is sequentially divided into a low-concentration bin, a medium-concentration bin, a high-concentration bin and a contrast bin through telescopic sleeve plates, and the corn drought resistance identification test device further comprises an agent box fixed to the top of the test box; through the air pressure effect generated by reciprocating motion of the piston plate in the piston box, the liquid dropping speed of penetrating fluid is increased firstly, the situation that the inner wall of a pipeline is attached and blocked is avoided, and liquid circulation is ensured; secondly, in the liquid dropping process, atomizing blades are driven to rotate, so that liquid drops are converted into a finer atomized state, and further fall in a larger range and in a uniform state, the accuracy of a test result is improved, meanwhile, the situation that soil is hardened due to large liquid drops is avoided, the porosity and the air permeability of the soil are ensured, and the soil quality is improved. And the accuracy of a test result is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drought resistance identification test, and in particular to a corn drought resistance identification test device and method. Background Art

[0002] Corn is one of the most important food crops, but its quality and yield are often restricted by various environmental factors, among which drought is one of the most important limiting factors. For example, in Xinjiang and other regions of my country, there is drought and little rain all year round. In order to meet the local planting needs, it is necessary to identify the drought resistance of corn in order to select the corn varieties that are most suitable for growing in arid environments. In the process of identifying the drought resistance of corn plants, different concentrations of permeate are usually added to the plant pots to simulate different drought stress environments, so as to compare the drought resistance differences between different treatment groups.

[0003] At present, in identification tests, the dripping permeate often forms compaction with the soil, causing uneven distribution of the permeate, which affects the accuracy of the test results. In addition, in order to obtain comprehensive drought resistance performance of different corn varieties, permeate should be dripped at different stages of corn growth for observation. Corn plants will continue to grow taller, and the height of the dripping liquid in current identification devices is mostly fixed, which cannot be adaptively adjusted according to the growth of the plants, and manual intervention is required, which reduces the convenience of the test. Therefore, a corn drought resistance identification test device and method are proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the dripping permeate will form compaction with the soil, causing uneven distribution of the permeate, affecting the accuracy of the test results; and the height of the dripping liquid cannot be adaptively adjusted according to the growth of the plant, reducing the convenience of the test, and a corn drought resistance identification test device and method are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A test device for identifying drought resistance of corn comprises a test box, which is divided into a low-concentration bin, a medium-concentration bin, a high-concentration bin and a control bin in sequence by a telescopic sleeve, wherein plant pots are placed in the low-concentration bin, the medium-concentration bin, the high-concentration bin and the control bin, and further comprises: a medicine box, which is fixed to the top of the test box, and is divided into three groups of medicine storage tanks of the same size by a partition, a connecting plate is fixedly connected to the movable plate of the telescopic sleeve, a spray part for dripping medicine into the plant pot is installed on the connecting plate, and a pressurizing part for accelerating the delivery of medicine into the connecting plate is provided on the medicine box; a lifting component, which is arranged on the medicine box, and is used to adaptively lift the height of the connecting plate.

[0007] In order to improve the accuracy of the identification test, preferably, the liquid spray part includes three groups of spray discs, the three groups of spray discs are fixed at the bottom of the connecting plate, and the three groups of spray discs are respectively located in the low concentration bin, the medium concentration bin and the high concentration bin, three groups of liquid guide grooves are opened in the connecting plate, and a plurality of groups of drainage pipes are distributed in a ring between the liquid guide grooves and the inner cavity of the spray disc, and the two ends of the drainage pipes are respectively connected with the liquid guide grooves and the inner cavity of the spray disc, the top of each group of the liquid guide grooves is fixed and connected with a liquid guide tube, and the other ends of the three groups of liquid guide tubes are respectively connected with the bottom of the inner cavity of the three groups of medicine storage tanks.

[0008] In order to improve the efficiency of spraying the permeate, preferably, the pressurizing part includes a piston box, the piston box is fixed on the side wall of the medicine box, a piston plate is slidably connected inside the piston box, and an inflation part is provided inside the piston box to push the piston plate to slide back and forth up and down.

[0009] Furthermore, the inflation part includes a rotating shaft, which is rotatably connected in the medicine box, and the other end of the rotating shaft passes through the other side of the medicine box. A driving motor is fixedly connected to the outer wall of the other side of the medicine box, and the output shaft of the driving motor is fixedly connected to the end of the rotating shaft. A rotating disk is fixedly connected to the outer wall of the rotating shaft located in the piston box, and a push-pull rod is rotatably connected to the bottom of the piston plate, and the other end of the push-pull rod is rotatably connected to the side wall of the rotating disk. The top of the piston box is fixed and connected to an inflation tube, and the other end of the inflation tube is connected to the inner cavity of the medicine box, and a one-way valve is provided in the inflation tube.

[0010] In order to reduce the spraying impact and effectively prevent soil compaction, preferably, an air guide groove is opened on the upper part of the spray disc, and a liquid-beating shaft is rotatably connected in the air guide groove, and the bottom end of the liquid-beating shaft penetrates into the inner cavity of the spray disc and is fixedly connected with an atomizing blade, and a driving impeller is fixedly connected to the outer wall of the liquid-beating shaft located in the air guide groove, the three groups of spray discs are connected by an air guide pipe, and the air guide pipe penetrates the telescopic sleeve, the side wall of the spray disc in the high concentration bin is fixed and connected with an air inlet pipe, the other end of the air inlet pipe penetrates the telescopic sleeve and extends to the control bin, the side wall of the spray disc in the low concentration bin is fixed and connected with an exhaust pipe, and the other end of the exhaust pipe is connected to the top of the inner cavity of the piston box.

[0011] Furthermore, the air extraction pipe input end and the air guide pipe output end connected to the spray disk in the low-concentration bin are symmetrically arranged along the center of the driving impeller, and the air intake pipe output end and the air guide pipe input end connected to the spray disk in the high-concentration bin are symmetrically arranged along the center of the driving impeller.

[0012] In order to improve the use effect of the permeate, preferably, the rotating shaft passes through the three groups of medicine storage tanks in sequence, and the rotating shafts in the three groups of medicine storage tanks are fixedly connected with mixing impellers.

[0013] In order to facilitate the spraying of permeate on corn plants at different heights at different growth stages, preferably, the lifting assembly includes a lifting plate, which is slidably connected in the medicine box, and pull ropes are fixedly connected on both sides of the top of the lifting plate. Guide pulley groups are fixedly connected to the outer walls of both sides of the medicine box, and the other ends of the two groups of pull ropes are respectively passed through the guide pulley groups on the corresponding sides to the test box and fixedly connected to the top of the connecting plate.

[0014] Preferably, the middle sections of the liquid guiding tube and the air extraction tube are both arranged in a hose structure, a solenoid valve is arranged in the liquid guiding tube, and a one-way valve is arranged in the air extraction tube.

[0015] A corn drought resistance identification test method, the steps are as follows:

[0016] Step 1: Place four groups of identical plant pots in the low concentration bin, medium concentration bin, high concentration bin, and control bin respectively;

[0017] Step 2: Add different concentrations of permeate to the plant pots in the low-concentration bin, the medium-concentration bin, and the high-concentration bin at different growth stages of the corn;

[0018] Step 3: Cultivate the plant pots in the control chamber under conventional conditions;

[0019] Step 4: Compare and observe the plant parameters of corn in the four groups of plant pots at different growth stages to obtain the drought resistance of this batch of corn.

[0020] Compared with the prior art, the present invention provides a corn drought resistance identification test device and method, which has the following beneficial effects:

[0021] 1. The corn drought resistance identification test device, through the air pressure generated by the reciprocating movement of the piston plate in the piston box, firstly accelerates the dripping speed of the permeate to avoid the adhesion and blockage of the inner wall of the pipe, thus ensuring the fluidity of the liquid; secondly, in the dripping process, the atomizing blades are driven to rotate, so that the droplets are transformed into a finer atomization state, and then fall in a larger range and in a uniform state, thereby improving the accuracy of the test results, and at the same time avoiding the formation of soil compaction caused by large droplets, ensuring the soil porosity and air permeability, and improving the accuracy of the test results.

[0022] 2. The corn drought resistance identification test device, when the lifting plate moves downward, pulls the connecting plate upward by pulling the rope, so as to increase the distance between the spray plate and the plant pot, so that the reagent can be sprayed in stages when the corn plants are at different growth heights, thereby facilitating the acquisition of the drought resistance of the corn plants at multiple stages of growth, effectively improving the convenience of the test, and making the test results more representative.

[0023] 3. The corn drought resistance identification test device can accurately drop equal amounts of permeate of different concentrations into the corresponding plant pots through the setting of three groups of liquid guide tubes and corresponding plant pots, thereby improving the accuracy of the test results. At the same time, by comparing the three groups of experimental groups with different concentrations with the control group, the drought resistance identification results obtained are more representative. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The overall structure of a corn drought resistance identification test device proposed by the present invention is shown in FIG. Figure 1 ;

[0025] Figure 2 The overall structure of a corn drought resistance identification test device proposed by the present invention is shown in FIG. Figure 2 ;

[0026] Figure 3 A schematic diagram of the internal structure of a test box of a corn drought resistance identification test device proposed by the present invention;

[0027] Figure 4 A schematic diagram of the internal structure of a reagent box of a corn drought resistance identification test device proposed by the present invention;

[0028] Figure 5 A corn drought resistance identification test device proposed by the present invention Figure 4 A schematic diagram of the enlarged structure of the middle A area;

[0029] Figure 6 A schematic diagram of the transverse cross-sectional structure of a test box of a corn drought resistance identification test device proposed by the present invention;

[0030] Figure 7 A corn drought resistance identification test device proposed by the present invention Figure 6 Schematic diagram of the enlarged structure of the middle B area;

[0031] Figure 8 The present invention provides a schematic diagram of the partial cross-sectional structure of a corn drought resistance identification test device.

[0032] In the figure: 1. test box; 2. telescopic sleeve; 21. low concentration chamber; 22. medium concentration chamber; 23. high concentration chamber; 24. control chamber; 25. plant pot; 3. medicine box; 31. partition; 32. medicine storage tank; 4. connecting plate; 41. liquid guide groove; 5. spray plate; 51. drainage pipe; 52. liquid guide pipe; 6. piston box; 61. piston plate; 62. rotating shaft; 621. mixing impeller; 63. driving motor; 64. rotating disk; 65. push-pull rod; 66. inflation tube; 7. air guide groove; 71. liquid beating shaft; 72. atomizing blade; 73. driving impeller; 74. air guide pipe; 741. air inlet pipe; 75. exhaust pipe; 8. lifting plate; 81. pull rope; 82. guide pulley group. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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 cannot be understood as a limitation on the present invention.

[0035] Embodiment 1:

[0036] Reference Figure 1-Figure 8 A corn drought resistance identification test device includes a test box 1, which is divided into a low-concentration bin 21, a medium-concentration bin 22, a high-concentration bin 23 and a control bin 24 in sequence by a telescopic sleeve 2, and plant pots 25 are placed in the low-concentration bin 21, the medium-concentration bin 22, the high-concentration bin 23 and the control bin 24. It also includes: a medicine box 3, which is fixed on the top of the test box 1, and is divided into three groups of medicine storage tanks 32 of the same size by a partition 31. A connecting plate 4 is fixedly connected to the movable plate of the telescopic sleeve 2, and a spray part for dripping medicine into the plant pot 25 is installed on the connecting plate 4. A pressurizing part for accelerating the delivery of medicine into the connecting plate 4 is provided on the medicine box 3; a lifting component, which is arranged on the medicine box 3, and the lifting component is used to adaptively lift the height of the connecting plate 4.

[0037] Reference Figure 1 , Figure 3 and Figure 8The liquid spraying part includes three groups of medicine spraying discs 5, which are all fixed at the bottom of the connecting plate 4, and the three groups of medicine spraying discs 5 are respectively located in the low concentration bin 21, the medium concentration bin 22 and the high concentration bin 23. Three groups of liquid guide grooves 41 are opened in the connecting plate 4, and multiple groups of drainage pipes 51 are distributed in an annular manner between the liquid guide grooves 41 and the inner cavity of the medicine spraying disc 5, and the two ends of the drainage pipes 51 are respectively connected with the liquid guide grooves 41 and the inner cavity of the medicine spraying disc 5, the top of each group of liquid guide grooves 41 is fixed and connected with a liquid guide pipe 52, the other ends of the three groups of liquid guide pipes 52 are respectively connected with the bottom of the inner cavity of the three groups of medicine storage tanks 32, and solenoid valves are arranged in the liquid guide pipes 52.

[0038] Through the arrangement of the above-mentioned structure, the solenoid valve in the liquid guide tube 52 is opened. At this time, the permeate of different concentrations in the three groups of medicine storage tanks 32 will respectively enter the corresponding liquid guide tank 41 along the three groups of liquid guide tubes 52, and drip into the three groups of different plant pots 25 through the drainage pipe 51 and the spray plate 5, thereby realizing precise control of the dripping amount of the three groups of permeate simultaneously, avoiding the influence of different dripping amounts on the test results, and improving the accuracy of the test results.

[0039] Reference Figure 3-Figure 5 , wherein the pressurizing part includes a piston box 6, which is fixed on the side wall of the medicine box 3, and a piston plate 61 is slidably connected in the piston box 6, and an inflation part for pushing the piston plate 61 to slide up and down is provided in the piston box 6; the inflation part includes a rotating shaft 62, which is rotatably connected in the medicine box 3, and the other end of the rotating shaft 62 passes through the other side of the medicine box 3, and a driving motor 63 is fixedly connected to the outer wall of the other side of the medicine box 3, and the output shaft of the driving motor 63 is fixedly connected to the end of the rotating shaft 62, and a rotating disk 64 is fixedly connected to the outer wall of the rotating shaft 62 located in the piston box 6, and a push-pull rod 65 is rotatably connected to the bottom of the piston plate 61, and the other end of the push-pull rod 65 is rotatably connected to the side wall of the rotating disk 64, and the top of the piston box 6 is fixed and connected with an inflation tube 66, and the other end of the inflation tube 66 is connected to the inner cavity of the medicine box 3, and a one-way valve is provided in the inflation tube 66;

[0040] It should be noted that the one-way valve in the inflation tube 66 can only allow the gas in the piston box 6 to enter the medicine box 3.

[0041] Through the arrangement of the above structure, the driving motor 63 is turned on to drive the rotating shaft 62 to rotate, so that the rotating disk 64 in the piston box 6 drives the piston plate 61 to move up and down through the push-pull rod 65. When the piston plate 61 moves upward, the gas in the top cavity of the piston box 6 will be squeezed, so the one-way valve in the inflation tube 66 will be opened, so that the compressed gas enters the top cavity of the medicine box 3, so that the air pressure in the cavity above the lifting plate 8 in the medicine box 3 increases. At this time, under the action of the air pressure, the lifting plate 8 will be pushed downward to squeeze the gas in the lower cavity of the medicine box 3, so that the permeate of different concentrations falls quickly along the three groups of liquid guide tubes 52, thereby increasing the dripping speed, and the accelerated liquid can quickly flush the pipeline to avoid adhesion and blockage on the inner wall of the pipeline, thereby ensuring the fluidity of the liquid.

[0042] Reference Figure 6-Figure 8 , wherein an air guide groove 7 is provided on the upper part of the medicine spraying disc 5, a liquid-beating shaft 71 is rotatably connected in the air guide groove 7, the bottom end of the liquid-beating shaft 71 penetrates into the inner cavity of the medicine spraying disc 5 and is fixedly connected with an atomizing blade 72, and a driving impeller 73 is fixedly connected to the outer wall of the liquid-beating shaft 71 located in the air guide groove 7, the three groups of medicine spraying discs 5 are connected through an air guide pipe 74, and the air guide pipe 74 penetrates the telescopic sleeve 2, and the side wall of the medicine spraying disc 5 in the high-concentration bin 23 is fixed and connected with an air inlet pipe 741, and the other end of the air inlet pipe 741 penetrates the telescopic sleeve Plate 2 extends into the control bin 24, the side wall of the medicine spraying disk 5 in the low-concentration bin 21 is fixed and connected with an exhaust pipe 75, the other end of the exhaust pipe 75 is connected to the top of the inner cavity of the piston box 6, and a one-way valve is arranged in the exhaust pipe 75; the input end of the exhaust pipe 75 connected to the medicine spraying disk 5 in the low-concentration bin 21 and the output end of the air guide pipe 74 are symmetrically arranged along the center of the driving impeller 73, and the output end of the air inlet pipe 741 connected to the medicine spraying disk 5 in the high-concentration bin 23 and the input end of the air guide pipe 74 are symmetrically arranged along the center of the driving impeller 73.

[0043] It should be noted that the one-way valve in the air extraction pipe 75 can only allow the gas in the medicine spraying disk 5 to enter the piston box 6.

[0044] Through the arrangement of the above structure, during the downward movement of the piston plate 61, a suction effect will be generated in the top cavity of the piston box 6, and the one-way valve in the exhaust pipe 75 will be opened, so that the airflow in the control chamber 24 will enter the top cavity of the piston box 6 along the air inlet pipe 741, the spray plate 5, the air guide pipe 74 and the exhaust pipe 75. In the process of the airflow passing through the spray plate 5, the driving impeller 73 inside it will be pushed to drive the liquid-beating shaft 71 to rotate, and then the atomizing blades 72 will rotate rapidly, so as to beat and cut the permeate in the dripping process, so that the droplets are transformed into a finer atomized state, and then fall into the plant pot 25 in a larger range and uniform state, so as to facilitate the permeate to penetrate uniformly into the soil in the plant pot 25, avoid uneven spraying of the permeate, improve the accuracy of the test results, and the atomized permeate is difficult to form compaction with the soil, ensure the porosity and air permeability of the soil, avoid the adverse effects of soil compaction on the test, and improve the accuracy of the test results.

[0045] Reference Figure 4 , Figure 5 The rotating shaft 62 passes through the three groups of drug storage tanks 32 in sequence, and the rotating shafts 62 in the three groups of drug storage tanks 32 are fixedly connected with mixing impellers 621; when the rotating shaft 62 rotates, it will also drive the mixing impellers 621 to rotate in the drug storage tanks 32, so as to stir the permeate in the drug storage tanks 32, avoid the sedimentation of the components inside the permeate, ensure the use effect of the permeate, and improve the test accuracy.

[0046] Reference Figure 3 , Figure 4 The lifting assembly includes a lifting plate 8, which is slidably connected in the medicine box 3. Pull ropes 81 are fixedly connected to both sides of the top of the lifting plate 8. Guide pulley groups 82 are fixedly connected to the outer walls of both sides of the medicine box 3. The other ends of the two groups of pull ropes 81 pass through the guide pulley groups 82 on the corresponding sides to the test box 1 and are fixedly connected to the top of the connecting plate 4.

[0047] Through the arrangement of the above-mentioned structure, when the lifting plate 8 moves downward, the pull rope 81 will be pulled downward with it, so that the connecting plate 4 is lifted upward, thereby increasing the distance between the spray plate 5 and the plant pot 25, so that when the corn plants are at different growth heights, they can be sprayed with reagents in stages, thereby facilitating the acquisition of the drought resistance of the corn plants at multiple stages of growth, effectively improving the convenience of the test, and making the test results more representative.

[0048] Reference Figure 1 , Figure 3 Among them, the middle sections of the liquid guide tube 52 and the air extraction tube 75 are both arranged with a hose structure, so as to facilitate the lifting and lowering of the connecting plate 4 and ensure the smooth operation of the device.

[0049] Embodiment 2:

[0050] Reference Figure 1-Figure 8 , which is basically the same as Example 1, on the basis of Example 1, a method for identifying drought resistance of corn is proposed, and the steps are as follows:

[0051] Step 1: Place four groups of identical plant pots 25 in the low concentration bin 21, the medium concentration bin 22, the high concentration bin 23 and the control bin 24 respectively;

[0052] Step 2: dripping different concentrations of permeate into the plant pots 25 in the low concentration bin 21, the medium concentration bin 22, and the high concentration bin 23 at different growth stages of the corn;

[0053] Step 3: Cultivate the plant pots 25 in the control chamber 24 under conventional conditions;

[0054] Step 4: Compare and observe the plant parameters of the corns in the four groups of plant pots 25 at different growth stages, so as to obtain the drought resistance of the batch of corns.

[0055] Reference Figure 1-Figure 8 In the present invention, when in use, four groups of identical plant pots 25 are placed in the low concentration bin 21, the medium concentration bin 22, the high concentration bin 23 and the control bin 24, respectively, and then the solenoid valve in the liquid guide tube 52 is opened. At this time, the different concentrations of the permeate in the three groups of medicine storage tanks 32 will enter the corresponding liquid guide tank 41 along the three groups of liquid guide tubes 52, respectively, and drip into the three different plant pots 25 through the drainage pipe 51 and the spray plate 5, and simultaneously realize the precise control of the dripping amount of the three groups of permeate, avoid the influence of different dripping amounts on the test results, and improve the accuracy of the test results.

[0056] At the same time, the driving motor 63 is turned on to drive the rotating shaft 62 to rotate, so that the rotating disk 64 in the piston box 6 drives the piston plate 61 to move up and down through the push-pull rod 65. In the process of the piston plate 61 moving downward, suction will be generated in the top cavity of the piston box 6, and the one-way valve in the air extraction pipe 75 will be opened, so that the airflow in the control chamber 24 enters the top cavity of the piston box 6 along the air inlet pipe 741, the medicine spraying plate 5, the air guide pipe 74 and the air extraction pipe 75. In the process of the airflow flowing through the medicine spraying plate 5, the driving impeller 73 inside it will be pushed to drive the liquid to be sprayed. The shaft 71 rotates, causing the atomizing blades 72 to rotate rapidly, thereby slapping and cutting the permeate in the dripping process, so that the droplets are transformed into a finer atomized state, and then fall into the plant pot 25 in a larger range and uniformly, so that the permeate can penetrate evenly into the soil in the plant pot 25, avoiding uneven spraying of the permeate, thereby improving the accuracy of the test results. In addition, the atomized permeate is difficult to form compaction with the soil, thereby ensuring the soil porosity and air permeability, avoiding the adverse effects of soil compaction on the test, and improving the accuracy of the test results.

[0057] When the piston plate 61 moves upward, the gas in the top cavity of the piston box 6 will be squeezed, thereby opening the one-way valve in the inflation tube 66, allowing the compressed gas to enter the top cavity of the medicine box 3, thereby increasing the air pressure in the cavity above the lifting plate 8 in the medicine box 3. At this time, under the action of the air pressure, the lifting plate 8 will be pushed downward to squeeze the gas in the lower cavity of the medicine box 3, so that the permeate of different concentrations falls quickly along the three groups of liquid guide tubes 52, thereby increasing the dripping speed, and the accelerated liquid can quickly flush the pipeline to avoid adhesion and blockage on the inner wall of the pipeline, thereby ensuring the fluidity of the liquid.

[0058] Moreover, when the lifting plate 8 moves downward, the pull rope 81 will be pulled downward with it, so that the connecting plate 4 will be lifted upward, thereby increasing the distance between the spray plate 5 and the plant pot 25, so that the corn plants can be sprayed with reagents in stages when they are at different growth heights, thereby facilitating the acquisition of the drought resistance of the corn plants at multiple stages of growth, effectively improving the convenience of the test, and making the test results more representative.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A corn drought resistance identification test device, comprising a test box (1), characterized in that: The test box (1) is divided into a low concentration chamber (21), a medium concentration chamber (22), a high concentration chamber (23) and a control chamber (24) in sequence by a telescopic sleeve plate (2), and plant pots (25) are placed in the low concentration chamber (21), the medium concentration chamber (22), the high concentration chamber (23) and the control chamber (24), and further comprises: A medicine box (3), the medicine box (3) is fixed on the top of the test box (1), and the medicine box (3) is divided into three groups of medicine storage tanks (32) of the same size by a partition (31). A connecting plate (4) is fixedly connected to the movable plate of the telescopic sleeve (2), a liquid spraying part for dripping medicine into the plant pot (25) is installed on the connecting plate (4), and a pressurizing part for accelerating the delivery of medicine into the connecting plate (4) is provided on the medicine box (3); A lifting component is provided on the medicine box (3), and is used for adaptively raising the height of the connecting plate (4).

2. A corn drought resistance identification test device according to claim 1, characterized in that: The liquid spraying part comprises three groups of medicine spraying discs (5), the three groups of medicine spraying discs (5) are all fixed at the bottom of the connecting plate (4), and the three groups of medicine spraying discs (5) are respectively located in the low concentration bin (21), the medium concentration bin (22) and the high concentration bin (23), three groups of liquid guide grooves (41) are opened in the connecting plate (4), and a plurality of groups of liquid discharge pipes (51) are distributed in an annular manner between the liquid guide grooves (41) and the inner cavity of the medicine spraying disc (5), and the two ends of the liquid discharge pipes (51) are respectively connected to the liquid guide grooves (41) and the inner cavity of the medicine spraying disc (5), the top of each group of the liquid guide grooves (41) is fixed and connected to a liquid guide pipe (52), and the other ends of the three groups of liquid guide pipes (52) are respectively connected to the bottom of the inner cavity of the three groups of medicine storage tanks (32).

3. A corn drought resistance identification test device according to claim 2, characterized in that: The pressurizing part comprises a piston box (6), the piston box (6) is fixed on the side wall of the medicine box (3), a piston plate (61) is slidably connected inside the piston box (6), and an inflation part for pushing the piston plate (61) to slide up and down is arranged inside the piston box (6).

4. A corn drought resistance identification test device according to claim 3, characterized in that: The inflation portion includes a rotating shaft (62), the rotating shaft (62) is rotatably connected in the medicine box (3), the other end of the rotating shaft (62) passes through the other side of the medicine box (3), a driving motor (63) is fixedly connected to the outer wall of the other side of the medicine box (3), the output shaft of the driving motor (63) is fixedly connected to the end of the rotating shaft (62), a rotating disk (64) is fixedly connected to the outer wall of the rotating shaft (62) located in the piston box (6), the bottom of the piston plate (61) is rotatably connected to a push-pull rod (65), the other end of the push-pull rod (65) is rotatably connected to the side wall of the rotating disk (64), the top of the piston box (6) is fixed and connected to an inflation tube (66), the other end of the inflation tube (66) is connected to the inner cavity of the medicine box (3), and a one-way valve is arranged in the inflation tube (66).

5. A corn drought resistance identification test device according to claim 4, characterized in that: An air guide groove (7) is provided on the upper part of the medicine spraying disc (5), and a liquid-beating shaft (71) is rotatably connected in the air guide groove (7). The bottom end of the liquid-beating shaft (71) penetrates into the inner cavity of the medicine spraying disc (5) and is fixedly connected to an atomizing blade (72). A driving impeller (73) is fixedly connected to the outer wall of the liquid-beating shaft (71) located in the air guide groove (7). The three groups of medicine spraying discs (5) are connected through an air guide pipe (74), and the air guide pipe (74) is connected to the inner cavity of the medicine spraying disc (5). The air pipe (74) passes through the telescopic sleeve (2); the side wall of the medicine spraying disc (5) in the high-concentration bin (23) is fixed and connected to an air inlet pipe (741); the other end of the air inlet pipe (741) passes through the telescopic sleeve (2) and extends into the control bin (24); the side wall of the medicine spraying disc (5) in the low-concentration bin (21) is fixed and connected to an air extraction pipe (75); the other end of the air extraction pipe (75) is connected to the top of the inner cavity of the piston box (6).

6. A corn drought resistance identification test device according to claim 5, characterized in that: The input end of the exhaust pipe (75) connected to the medicine spraying disk (5) in the low-concentration bin (21) and the output end of the air guide pipe (74) are symmetrically arranged along the center of the driving impeller (73), and the output end of the air inlet pipe (741) connected to the medicine spraying disk (5) in the high-concentration bin (23) and the input end of the air guide pipe (74) are symmetrically arranged along the center of the driving impeller (73).

7. A corn drought resistance identification test device according to claim 4, characterized in that: The rotating shaft (62) passes through the three groups of medicine storage tanks (32) in sequence, and a mixing impeller (621) is fixedly connected to the rotating shaft (62) located in the three groups of medicine storage tanks (32).

8. A corn drought resistance identification test device according to claim 1, characterized in that: The lifting assembly comprises a lifting plate (8), the lifting plate (8) is slidably connected in the medicine box (3), and pull ropes (81) are fixedly connected to both sides of the top of the lifting plate (8), and guide pulley groups (82) are fixedly connected to both sides of the outer walls of the medicine box (3), and the other ends of the two groups of pull ropes (81) are respectively passed through the guide pulley groups (82) on the corresponding sides into the test box (1) and are fixedly connected to the top of the connecting plate (4).

9. A corn drought resistance identification test device according to claim 5, characterized in that: The middle sections of the liquid guiding tube (52) and the air extraction tube (75) are both arranged in a hose structure, a solenoid valve is arranged in the liquid guiding tube (52), and a one-way valve is arranged in the air extraction tube (75).

10. A method for identifying drought resistance of corn, using a device for identifying drought resistance of corn as claimed in any one of claims 1 to 9, characterized in that: Here are the steps: Step 1: four groups of identical plant pots (25) are placed in a low concentration bin (21), a medium concentration bin (22), a high concentration bin (23) and a control bin (24) respectively; Step 2: dripping different concentrations of permeate into the plant pots (25) in the low concentration bin (21), the medium concentration bin (22), and the high concentration bin (23) at different growth stages of the corn; Step 3: Cultivate the plant pots (25) in the control chamber (24) under conventional conditions; Step 4: Compare and observe the plant parameters of corn in four groups of plant pots (25) at different growth stages, so as to obtain the drought resistance performance of the batch of corn.

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