Rice low-temperature cold injury breeding test device and use method thereof

Abstract

The invention relates to the technical field of rice breeding, in particular to a rice low-temperature cold injury breeding test device and a using method thereof.The rice low-temperature cold injury breeding test device comprises a plurality of breeding discs, a driving assembly at the bottoms of the breeding discs comprises a controller and a driving box, and a driving piece is fixed to the inner bottom wall of the driving box; an output shaft of the driving piece is connected with a first rotating shaft which penetrates through the top wall of the driving box, is connected with a first gear and is controlled by a controller to rotate. The bottom end of the second rotating shaft is connected with the top of the driving box, the side wall of the second rotating shaft is connected with first connecting rods in the circumferential direction, and second connecting rods are connected between the adjacent first connecting rods. The top of the first connecting rod is provided with a second gear, and the top of the second connecting rod is provided with a third gear meshed with the first gear and the second gear. The breeding disc is detachably connected with the top of the second gear. The third gear is provided with a humidifying assembly, and the first gear is provided with a blowing assembly. The low-temperature cold damage environment of rice can be simulated, and meanwhile the position, strength and frequency of low-temperature airflow can be adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rice breeding, and particularly relates to a rice low-temperature cold damage breeding test device and a use method thereof. BACKGROUND

[0002] Low-temperature cold damage is one of important environmental factors affecting the growth and yield of rice. Rice may suffer from low-temperature cold damage at different growth stages, such as the bud stage, the seedling stage, the booting stage and the flowering stage. Low temperature can affect the physiological metabolic process of rice, for example, inhibit photosynthesis, reduce enzyme activity and destroy the stability of the cell membrane, thereby causing slow growth, poor development, and even a large number of seedling death and yield reduction. Therefore, the research on rice low-temperature cold damage breeding has far-reaching significance for improving the cold resistance of rice varieties and ensuring the yield of rice and food security.

[0003] In the prior art, a cold air blower is used to blow air on multiple seedling trays or breeding trays to realize rice low-temperature cold damage breeding test. However, the position of air blowing of such a rice low-temperature cold damage breeding test device is fixed, and it is difficult to flexibly adjust the strength and frequency of low-temperature air flow according to the test requirements.

[0004] In summary, how to solve the problem that the position of air blowing in the existing rice low-temperature cold damage breeding test device is fixed and it is difficult to flexibly adjust the strength and frequency of low-temperature air flow according to the test requirements has become a difficult problem to be solved in the field at present, and therefore it is necessary to propose a rice low-temperature cold damage breeding test device and a use method thereof. SUMMARY

[0005] To solve the above problems, the present application provides a rice low-temperature cold damage breeding test device and a use method thereof, which can simulate the low-temperature cold damage environment suffered by rice at different growth stages and flexibly adjust the position, strength and frequency of low-temperature air flow.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present application is as follows: a rice low-temperature cold damage breeding test device, comprising a plurality of breeding trays, and a driving assembly arranged at the bottom of each breeding tray for driving the breeding tray to rotate.

[0007] The driving assembly comprises a controller and a driving box, a driving member is fixedly connected to the inner bottom wall of the driving box, a first rotating shaft is coaxially fixedly connected to the output shaft of the driving member, a first gear is coaxially fixedly connected to the end of the first rotating shaft away from the driving member and penetrating through the top wall of the driving box, and the controller is used to control the rotation of the output shaft of the driving member, thereby driving the rotation of the first gear.

[0008] A second rotating shaft is coaxially fixedly connected to the outside of the first rotating shaft, and the first rotating shaft and the second rotating shaft are rotationally connected; the bottom end of the second rotating shaft is fixedly connected to the top of the driving box.

[0009] The first connecting rods are fixedly connected to the second rotating shaft side walls in the circumferential direction; the second connecting rods are fixedly connected between adjacent first connecting rods; the second gears are rotatably connected to the top of the first connecting rods; the third gears are rotatably connected to the top of the second connecting rods; the third gears are meshed with the first gears and the second gears adjacent thereto; and the breeding trays are detachably connected to the top of the second gears.

[0010] The third gears are provided with the humidifying assemblies for humidifying the soil in the breeding trays.

[0011] The first gears are provided with the air blowing assemblies for simulating a low-temperature environment during breeding.

[0012] The technical principle of the above scheme is as follows:

[0013] The rice seeds are uniformly scattered in the soil in the breeding trays, the breeding water is injected into the water storage box through the water injection port, the rice low-temperature cold damage breeding test device is placed in the thermostat, the controller is used to control the rotation of the output shaft of the driving member, the driving member drives the rotation of the first gear, and then drives the rotation of all the breeding trays; the rotation of the first gear drives the rotation of the air blowing assembly to generate a circumferential low-temperature airflow, and the low-temperature airflow is blown out in the circumferential direction of all the breeding trays; when the soil humidity in the breeding tray is lower than the set soil humidity threshold value, the controller starts the humidifying assembly to spray and humidify the soil in the breeding tray.

[0014] The above scheme has the following beneficial effects:

[0015] 1. The breeding tray is driven to rotate by the driving assembly, so that the rice seeds can uniformly receive the influence of the environmental conditions during breeding, avoiding the local environmental differences caused by fixed position, providing a more uniform and consistent low-temperature cold damage simulation environment for the rice seeds, and helping to improve the accuracy and reliability of the test results. At the same time, the rotation of the breeding tray can simulate the wind disturbance and other factors that may occur in the natural environment, promote the growth and development of the rice seedlings, and make them grow in a more natural dynamic environment, which is conducive to screening rice varieties with better adaptability and stress resistance.

[0016] 2. The humidifying assembly is integrated, and the humidifying operation is automatically controlled by the controller according to the signal of the humidity sensor, so that the soil humidity in the breeding tray is accurately and timely adjusted. This not only can simulate different humidity environments to study the comprehensive influence of low-temperature cold damage and soil humidity on the growth of rice, but also can provide the most suitable soil humidity for rice seeds and seedlings according to the needs of rice in different growth stages, avoid the interference of too dry or too wet soil on the test results, further optimize the test conditions, and help to more comprehensively evaluate the performance of rice varieties.

[0017] 3. The blowing component in this invention generates a circumferential low-temperature airflow as the first gear rotates, achieving dynamic simulation of the low-temperature environment. This simulation method more closely resembles the changing characteristics of the natural low-temperature environment and can work in conjunction with the rotating breeding disc to provide continuous and stable low-temperature stimulation for rice at different growth stages. Simultaneously, through the controller's control of the driving components, the intensity and frequency of the low-temperature airflow can be flexibly adjusted according to experimental needs, providing a controllable and adjustable low-temperature environment for rice low-temperature chilling injury breeding experiments.

[0018] Furthermore, the blower assembly includes a connecting rod, which is coaxially fixed to the top of the first gear, and a fan blade is fixedly connected to the end of the connecting rod away from the first gear.

[0019] Beneficial effects: The fan blades, through their linkage with the first gear, can naturally generate a low-temperature airflow when the first gear rotates, requiring no additional power source. This simplifies the structure and reduces the complexity and cost of the device. Furthermore, because the fan blades rotate with the first gear, the generation of the low-temperature airflow is synchronized with the rotation of the breeding disc, resulting in a more uniform coverage area for the low-temperature airflow.

[0020] Furthermore, a bearing is provided between the second rotating shaft and the top wall of the drive box. The inner ring of the bearing is interference-fitted with the first rotating shaft, and the outer ring sidewall of the bearing is fixedly connected to the top wall of the drive box.

[0021] Beneficial effects: The bearing configuration reduces friction between the first shaft and the top wall of the drive housing, reduces energy loss, and improves the transmission efficiency of the drive assembly.

[0022] Furthermore, all breeding discs are circular.

[0023] Beneficial effects: The circular disc design conforms to the principles of fluid mechanics, and the air resistance encountered during rotation is relatively small. At the same time, the circular disc allows the moisture in the soil inside the breeding disc to be evenly diffused as the breeding disc rotates.

[0024] Furthermore, temperature sensors are fixedly connected to the bottom wall of each breeding tray. The controller is used to receive temperature signals sent by the temperature sensors in the breeding tray and control the operation of the drive components based on the temperature signals.

[0025] Beneficial effects: The temperature sensor can monitor the temperature inside the breeding tray in real time, providing temperature feedback to the controller. This allows the controller to control the operation of the drive components based on the actual temperature conditions, thereby adjusting the rotation speed of the breeding tray to regulate the distribution and intensity of the low-temperature airflow.

[0026] Furthermore, each breeding tray has drainage holes at the bottom, and each drainage hole can be detachably connected with a plug.

[0027] Beneficial effect: the design of the drain hole and plug facilitates the management of water in the breeding tray. When the soil moisture is too high, the plug can be opened to drain the excess water in time.

[0028] Further, the humidifying assembly comprises a water storage box fixedly connected to the top of the third gear, a pump assembly fixedly connected to the top of the water storage box, an output end of the pump assembly in communication with the water storage box, and a spray head in communication with the output end of the pump assembly. The controller is configured to control the operation of the pump assembly.

[0029] Beneficial effect: through the precise control of the controller, water can be supplied to the soil in the breeding tray at any time as needed to ensure that the soil humidity is within the range suitable for the growth of rice. Meanwhile, the humidifying assembly can also achieve uniform humidification during the rotation of the breeding tray, avoiding the situation of local over-wetting or over-drying.

[0030] Further, a humidity sensor is fixedly connected to the inner bottom wall of each breeding tray. The controller is configured to receive a humidity signal of the breeding tray sent by the humidity sensor and control the operation of the pump assembly based on the humidity signal.

[0031] Beneficial effect: the humidity sensor can monitor the soil humidity in the breeding tray in real time to provide humidity information for the controller, so that the controller can control the start and stop of the pump assembly according to the real-time humidity.

[0032] Further, a water inlet is formed in the top of each water storage box, and a water level sensor is fixedly connected to the inner side wall of each water storage box. The controller is configured to receive a water level signal sent by the water level sensor and control the pump assembly to stop running based on the water level signal.

[0033] Beneficial effect: the water level sensor can monitor the water level in the water storage box. When the water level is too low, the controller controls the pump assembly to stop running to prevent the pump assembly from being damaged by idling.

[0034] Further, a method for using the rice low-temperature cold damage breeding test device comprises the following steps:

[0035] Step one: adding breeding soil to the breeding tray, uniformly sowing rice seeds in the soil in the breeding tray, injecting breeding water into the water storage box through the water inlet, placing the rice low-temperature cold damage breeding test device in the thermostat, setting the low-temperature temperature required for the test for the thermostat, and setting the soil humidity threshold for the controller.

[0036] Step two: turning on the controller, the controller controls the rotation of the output shaft of the driving member, the driving member drives the rotation of the first gear, and further drives the rotation of all breeding trays; the rotation of the first gear drives the rotation of the connecting rod and the fan blade, and the rotation of the fan blade generates a circumferential low-temperature airflow, which blows the low-temperature airflow circumferentially to all breeding trays.

[0037] Step three, when the soil humidity in the breeding tray is lower than the set soil humidity threshold, the controller starts the pump assembly to deliver the water in the water storage box to the spray head through the output end of the pump assembly for spraying and humidifying the soil in the breeding tray.

[0038] Step four, when it is necessary to drain the water in the breeding tray, the breeding tray is removed from the second gear, the plug on the drainage hole of the breeding tray is removed, and the water is drained through the drainage hole. After the drainage is completed, the plug is reinstalled, and the breeding tray is reinstalled on the top of the second gear.

[0039] Beneficial effects: the use method of the rice low-temperature cold damage breeding test device can simulate the low-temperature cold damage environment of rice at different growth stages, and the sensor and the controller are used to realize accurate monitoring and control of low-temperature airflow, soil humidity and other factors, thereby improving the scientificity and accuracy of the test. The driving assembly drives the breeding tray to rotate, and the blowing and humidifying assembly is combined to enhance the comprehensiveness and dynamics of the environment simulation. The automatic operation saves labor cost and time, and helps to screen excellent varieties.

[0040] Additional aspects and advantages of the application will be described in part below, will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is an axial view of the rice low-temperature cold damage breeding test device of the application.

[0042] Figure 2 It is a lateral sectional view of the rice low-temperature cold damage breeding test device of the application.

[0043] Figure 3 It is a top view of the rice low-temperature cold damage breeding test device of the application.

[0044] Figure 4 It is a bottom view of the rice low-temperature cold damage breeding test device of the application.

[0045] Figure 5 It is a step diagram of the use method of the rice low-temperature cold damage breeding test device of the application.

[0046] The reference signs in the drawings of the specification include: 1, breeding tray; 2, driving box; 3, driving piece; 4, first rotating shaft; 5, first gear; 6, second rotating shaft; 7, first connecting rod; 8, second connecting rod; 9, second gear; 10, third gear; 11, water storage box; 12, pump assembly; 13, spray head; 14, connecting rod; 15, fan blade. DETAILED DESCRIPTION

[0047] The following will be further described in detail through specific embodiments:

[0048] Example 1:

[0049] As attached Figures 1-4 As shown: A rice low-temperature chilling injury breeding test device includes several breeding trays 1, all of which are circular. The bottom of the breeding tray 1 is provided with a driving component for driving the breeding tray 1 to rotate.

[0050] The drive assembly includes a controller and a drive housing 2. A drive component 3 is fixedly connected to the bottom wall of the drive housing 2 by screws. A first rotating shaft 4 is integrally formed on the output shaft of the drive component 3. The end of the first rotating shaft 4 away from the drive component 3 passes through the top wall of the drive housing 2 and is fixedly connected to a first gear 5 by screws. The controller is used to control the rotation of the output shaft of the drive component 3, thereby driving the first gear 5 to rotate.

[0051] The first rotating shaft 4 is fitted with a second rotating shaft 6 on its outer side, and the first rotating shaft 4 and the second rotating shaft 6 are rotatably engaged; the bottom end of the second rotating shaft 6 and the top of the drive box 2 are fixedly connected by screws.

[0052] A first connecting rod 7 is integrally formed along the circumference of the side wall of the second rotating shaft 6; a second connecting rod 8 is fixedly connected between adjacent first connecting rods 7 by screws; a second gear 9 is rotatably engaged at the top of each first connecting rod 7, and a third gear 10 is rotatably engaged at the top of each second connecting rod 8; the third gear 10 meshes with the adjacent first gear 5 and second gear 9; the breeding tray 1 is detachably threaded to the top of the second gear 9.

[0053] Each of the third gears 10 is equipped with a humidification component for humidifying the soil in the breeding tray 1.

[0054] The first gear 5 is equipped with a blower assembly for simulating the low-temperature environment during breeding.

[0055] The blower assembly includes a connecting rod 14, which is coaxially fixed to the top of the first gear 5 by screws. The end of the connecting rod 14 away from the first gear 5 is fixedly connected to a fan blade 15 by screws.

[0056] A bearing is provided between the second rotating shaft 6 and the top wall of the drive box 2. The inner ring of the bearing is interference-fitted with the first rotating shaft 4, and the outer ring side wall of the bearing is integrally formed with the top wall of the drive box 2.

[0057] Temperature sensors are fixedly connected to the bottom wall of the breeding tray 1 by screws. The controller is used to receive the temperature signals sent by the temperature sensors in the breeding tray 1 and control the operation of the drive unit 3 based on the temperature signals.

[0058] Each breeding tray 1 has drainage holes at the bottom, and each drainage hole can be detachably connected with a plug.

[0059] The humidification assembly includes a water storage box 11 fixedly connected to the top of the third gear 10 by screws. A pump assembly 12 is fixedly connected to the top of the water storage box 11 by screws. The input end of the pump assembly 12 is connected to the water storage box 11, and the output end of the pump assembly 12 is connected to the spray head 13. The controller is used to control the operation of the pump assembly 12.

[0060] Humidity sensors are also fixedly connected to the bottom wall of the breeding tray 1 by screws. The controller is used to receive the humidity signal sent by the humidity sensor in the breeding tray 1 and control the operation of the pump assembly 12 based on the humidity signal.

[0061] Each water storage box 11 has a water inlet on its top. Each water storage box 11 has a water level sensor fixedly connected to its inner side wall by screws. The controller is used to receive the water level signal sent by the water level sensor and control the pump assembly 12 to stop running based on the water level signal.

[0062] The specific implementation process is as follows:

[0063] by Figure 1 For example, prepare an appropriate amount of soil suitable for rice breeding and add it evenly to each of the circular breeding trays 1. Then, select plump rice seeds and sow them evenly on the soil in the breeding trays 1. Next, inject an appropriate amount of breeding water into the water storage box 11 through the water inlet at the top of the water storage box 11. After that, place the entire rice low-temperature chilling injury breeding experimental device into a constant temperature chamber. According to the experimental purpose, use the control panel of the constant temperature chamber to set the required low temperature for the experiment; in this embodiment, the internal temperature of the constant temperature chamber is set to 15℃ to simulate the low temperature environment that rice may encounter during the germination period. At the same time, set the soil moisture threshold in the breeding trays 1 through the controller; in this embodiment, the soil moisture threshold is set to 60%.

[0064] by Figure 2 , Figure 3For example, when the controller is turned on, the controller controls the output shaft of the drive component 3 to start rotating; in this embodiment, the drive component 3 is a servo motor. The rotation of the output shaft of the servo motor drives the first rotating shaft 4 to rotate, and the first gear 5 at the top of the first rotating shaft 4 rotates accordingly. Since the first gear 5 meshes with the third gear 10, and the second gear 9 rotates and engages with the top of the first connecting rod 7, and the third gear 10 rotates and engages with the top of the second connecting rod 8, and the first connecting rod 7 and the second connecting rod 8 are respectively fixed to the side wall of the second rotating shaft 6, and the second rotating shaft 6 is fixed to the top of the drive box 2, the rotation of the first gear 5 can drive all the second gears 9 to rotate, thereby causing all the breeding trays 1 to start rotating. At the same time, the connecting rod 14 at the top of the first gear 5 rotates with the rotation of the first gear 5, and the fan blade 15 at the top of the connecting rod 14 also rotates accordingly. During rotation, the fan blade 15 can fan the surrounding cold air to generate a circumferential low-temperature airflow. This low-temperature airflow is evenly blown onto all rotating breeding trays 1, simulating the wind-cold environment when rice encounters low-temperature damage in the natural environment. At the same time, the rotation of the breeding tray 1 enables the rice seeds or seedlings in the breeding tray 1 to receive the low-temperature airflow from the fan blade 15 evenly in all directions.

[0065] by Figure 1 For example, a humidity sensor on the bottom wall of the breeding tray 1 monitors the soil moisture in real time and feeds the humidity signal back to the controller. When the soil moisture is lower than the set threshold of 60%, the controller starts the pump assembly 12. The pump assembly 12 starts working, drawing water from the water storage box 11 from the input end and delivering it to the spray head 13 through the output end. At the same time, due to the rotation of the third gear 10, the spray head 13 on it sprays water in a mist form evenly onto the soil in the breeding tray 1 in a rotating state, realizing the spray humidification of the soil and ensuring that the soil moisture is maintained within the range suitable for rice growth.

[0066] by Figure 1 For example, if excessive moisture is found in breeding tray 1 during the experiment, remove breeding tray 1 from the second gear 9, remove the plug from the drain hole on breeding tray 1, and the excess moisture will drain out through the drain hole under gravity. After drainage is complete, reinstall the plug on the drain hole, and reinstall breeding tray 1 on top of the second gear 9, ensuring that breeding tray 1 is securely installed, and continue the experiment.

[0067] Throughout the experiment, the temperature sensor continuously monitored the temperature inside the breeding tray 1 and fed the temperature signal back to the controller. Based on the temperature signal, the controller adjusted the rotation speed of the breeding tray 1 by adjusting the operating speed of the drive component 3, thereby regulating the distribution and intensity of the low-temperature airflow to more accurately simulate different low-temperature chilling injury environments. Simultaneously, the water level sensor continuously monitored the water level in the water storage box 11. When the water level was too low, the controller stopped the pump assembly 12 to prevent damage from idling.

[0068] Embodiment 2:

[0069] As shown in the accompanying Figure 5 The difference between the embodiment 1 and the embodiment 2 is that the method for using the rice low-temperature chilling breeding test device comprises the following steps:

[0070] Step one, add the breeding soil into the breeding disc 1, uniformly sow the rice seeds in the soil in the breeding disc 1, inject the breeding water into the water storage box 11 through the water injection port, put the rice low-temperature chilling breeding test device into the thermostat, set the low-temperature temperature required for the test on the thermostat, and set the soil humidity threshold on the controller.

[0071] Step two, turn on the controller, the controller controls the rotation of the output shaft of the driving assembly 3, the driving assembly 3 drives the rotation of the first gear 5, and then drives the rotation of all the breeding discs 1; the rotation of the first gear 5 drives the rotation of the connecting rod 14 and the fan blade 15, and the rotation of the fan blade 15 generates a circumferential low-temperature airflow, which blows the low-temperature airflow to all the breeding discs 1 in the circumferential direction.

[0072] Step three, when the soil humidity in the breeding disc 1 is lower than the set soil humidity threshold, the controller starts the pump assembly 12, and the water in the water storage box 11 is transported to the spray head 13 through the output end of the pump assembly 12 to spray and humidify the soil in the breeding disc 1.

[0073] Step four, when it is necessary to drain the water in the breeding disc 1, the breeding disc 1 is removed from the second gear 9, the plug on the drainage hole of the breeding disc 1 is removed, and the water is drained through the drainage hole. After the drainage is completed, the plug is reinstalled, and the breeding disc 1 is reinstalled on the top of the second gear 9.

[0074] The method for using the rice low-temperature chilling breeding test device can simulate the low-temperature chilling environment of the rice in different growth stages, and the humidity sensor, the temperature sensor and the controller can realize the monitoring and control of the low-temperature airflow and the soil humidity during the rice low-temperature chilling breeding test, thereby improving the scientificity and accuracy of the test. The driving assembly drives the rotation of the breeding disc 1, and the blowing assembly and the humidifying assembly are combined to enhance the comprehensiveness and dynamics of the environment simulation during the rice low-temperature chilling breeding test. The automatic operation saves the labor cost and time, and is helpful for screening the excellent varieties.

[0075] Obviously, the above embodiment is only an example for clearly illustrating, but not a limitation on the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A rice low-temperature chilling injury breeding test device, comprising several breeding trays (1), characterized in that, The bottom of the breeding tray (1) is provided with a drive assembly for driving the breeding tray (1) to rotate; The drive assembly includes a controller and a drive box (2); a drive component (3) is fixedly connected to the bottom wall of the drive box (2), and a first rotating shaft (4) is fixedly connected to the output shaft of the drive component (3) on the same axis. The end of the first rotating shaft (4) away from the drive component (3) passes through the top wall of the drive box (2) and is fixedly connected to a first gear (5) on the same axis. The controller is used to control the output shaft of the drive component (3) to rotate, thereby driving the first gear (5) to rotate. A second rotating shaft (6) is sleeved on the outside of the first rotating shaft (4), and the first rotating shaft (4) and the second rotating shaft (6) are rotatably engaged; The second rotating shaft (6) is fixedly connected to the top of the drive box (2); A first connecting rod (7) is fixedly connected to the side wall of the second rotating shaft (6) along its circumference; a second connecting rod (8) is fixedly connected between adjacent first connecting rods (7); a second gear (9) is rotatably engaged at the top of each first connecting rod (7), and a third gear (10) is rotatably engaged at the top of each second connecting rod (8); the third gear (10) meshes with the first gear (5) and the second gear (9) adjacent to it; the breeding tray (1) can be detachably connected to the top of the second gear (9); Each of the third gears (10) is equipped with a humidification component for humidifying the soil in the breeding tray (1); The first gear (5) is equipped with a blower assembly for simulating the low-temperature environment during breeding.

2. The rice low-temperature chilling injury breeding experimental device according to claim 1, characterized in that, The blower assembly includes a connecting rod (14), which is coaxially fixed to the top of the first gear (5), and a fan blade (15) is fixedly connected to the end of the connecting rod (14) away from the first gear (5).

3. The rice low-temperature chilling injury breeding experimental device according to claim 2, characterized in that, A bearing is provided between the second rotating shaft (6) and the top wall of the drive box (2). The inner ring of the bearing is interference-fitted with the first rotating shaft (4), and the outer ring side wall of the bearing is fixedly connected to the top wall of the drive box (2).

4. The rice low-temperature chilling injury breeding experimental device according to claim 3, characterized in that, All breeding trays (1) are circular.

5. The rice low-temperature chilling injury breeding experimental device according to claim 4, characterized in that, Temperature sensors are fixedly connected to the bottom wall of the breeding tray (1). The controller is used to receive the temperature signal sent by the temperature sensor in the breeding tray (1) and control the operation of the drive unit (3) based on the temperature signal.

6. The rice low-temperature chilling injury breeding experimental device according to claim 5, characterized in that, The bottom of each breeding tray (1) has drainage holes, and each drainage hole can be detachably connected with a plug.

7. The rice low-temperature chilling injury breeding experimental device according to claim 6, characterized in that, The humidification assembly includes a water storage box (11) fixedly connected to the top of the third gear (10), a pump assembly (12) fixedly connected to the top of the water storage box (11), the input end of the pump assembly (12) is connected to the water storage box (11), the output end of the pump assembly (12) is connected to the spray head (13), and the controller is used to control the operation of the pump assembly (12).

8. The rice low-temperature chilling injury breeding experimental device according to claim 7, characterized in that, Humidity sensors are also fixedly connected to the bottom wall of the breeding tray (1). The controller is used to receive the humidity signal sent by the humidity sensor in the breeding tray (1) and control the operation of the pump assembly (12) based on the humidity signal.

9. The rice low-temperature chilling injury breeding experimental device according to claim 8, characterized in that, Water inlets are opened on the top of the water storage box (11), and water level sensors are fixedly connected to the inner side wall of the water storage box (11). The controller is used to receive the water level signal sent by the water level sensor and control the pump assembly (12) to stop running based on the water level signal.

10. A method of using a rice low-temperature chilling injury breeding test device, based on the rice low-temperature chilling injury breeding test device according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Add breeding soil to the breeding tray (1), sow rice seeds evenly in the soil of the breeding tray (1), inject breeding water into the water storage box (11) through the water inlet, put the rice low temperature cold injury breeding test device into the constant temperature box, set the low temperature required for the test to the constant temperature box, and set the soil moisture threshold to the controller. Step 2: Turn on the controller. The controller controls the output shaft of the drive component (3) to rotate. The drive component (3) drives the first gear (5) to rotate, which in turn drives all the breeding trays (1) to rotate. The rotation of the first gear (5) drives the connecting rod (14) to drive the fan blade (15) to rotate. The rotation of the fan blade (15) generates a circumferential low-temperature airflow, which blows a low-temperature airflow around all the breeding trays (1). Step 3: When the soil moisture in the breeding tray (1) is lower than the set soil moisture threshold, the controller starts the pump assembly (12) to deliver the water in the water storage box (11) to the spray head (13) through the output end of the pump assembly (12) to spray and humidify the soil in the breeding tray (1); Step 4: When it is necessary to drain the breeding tray (1), remove the breeding tray (1) from the second gear (9), remove the plug on the drain hole of the breeding tray (1), and drain the water through the drain hole. After the drainage is completed, reinstall the plug and reinstall the breeding tray (1) on the top of the second gear (9).

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