Indoor culture device for simulating influence of biochar on mineralization of soil organic carbon

Abstract

The utility model discloses an indoor culture device for simulating the influence of biochar on soil organic carbon mineralization, relates to the field of experimental equipment, and can solve the problems that in the prior art, the influence mechanism of biochar on soil organic carbon mineralization is complex, and then accurate control over the release amount of biochar in soil in agricultural production is influenced. The indoor culture device comprises an experiment box body, a plurality of partition plates connected to the cavity wall of a containing cavity of the experiment box body and used for dividing the containing cavity into a plurality of experiment cavities, and a box cover detachably connected to the experiment box body and used for being matched with the partition plates to seal the experiment cavities, and the experiment cavities are used for containing soil mixed with biochar; the cavity wall of the experiment cavity is connected with a heating piece used for heating soil in the experiment cavity, the experiment box body is connected with a plurality of water conveying pipes used for spraying water to the soil in the experiment cavity, the cavity wall of the experiment cavity is further connected with a monitoring piece used for monitoring the concentration of carbon dioxide in the experiment cavity, and the inner side wall of the box cover is connected with a plurality of sunlight lamps.

Description

Technical Field

[0001] The present application relates to the field of experimental equipment, and in particular to an indoor culture device for simulating the effect of biochar on soil organic carbon mineralization. Background Art

[0002] Biochar, as a highly stable carbonized organic matter, is prepared by pyrolysis of biomass (such as wood, crop residues, etc.) under anaerobic conditions. Due to its porous structure and large specific surface area, this substance can fix a large amount of carbon in the soil, thereby mitigating climate change. At the same time, the application of biochar also has an important impact on the mineralization process of soil organic carbon. Soil organic carbon mineralization refers to the process in which organic carbon compounds in the soil are decomposed into smaller molecules by microbial action and finally converted into carbon dioxide. The addition of biochar can change the structure and function of the soil microbial community, thereby affecting the mineralization rate and path of organic carbon.

[0003] In the prior art, the effect of biochar on soil organic carbon mineralization shows a certain complexity. Biochar can increase the diversity and quantity of soil microorganisms, which usually accelerates the mineralization of organic carbon; however, the anti-decomposition properties of biochar itself may slow down this process. In addition, the adsorption capacity of biochar can adsorb organic matter in the soil and protect them from rapid decomposition by microorganisms, thereby affecting the decomposition rate of organic matter and soil fertility. Therefore, the mechanism of biochar's effect on soil organic carbon mineralization is complex, which in turn affects the precise control of its release in the soil during agricultural production. Utility Model Content

[0004] To this end, the present application provides an indoor cultivation device that simulates the effect of biochar on soil organic carbon mineralization, so as to solve the problem in the prior art that the mechanism of the effect of biochar on soil organic carbon mineralization is complex, which in turn affects the precise control of its release in the soil in agricultural production.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] An indoor cultivation device for simulating the effect of biochar on soil organic carbon mineralization, comprising an experimental box, a plurality of partitions connected to the walls of a receiving chamber of the experimental box and used to divide the receiving chamber into a plurality of experimental chambers, and a box cover detachably connected to the experimental box and used to cooperate with the partitions to seal the experimental chambers, wherein the experimental chambers are used to receive soil mixed with biochar, the chamber walls of the experimental chambers are connected to a heating element for heating the soil in the experimental chambers, the experimental box is connected to a plurality of water pipes for spraying water on the soil in the experimental chambers, the plurality of water pipes correspond one to one to the plurality of experimental chambers, and the The cavity wall of the experimental cavity is also connected to a monitoring device for monitoring the concentration of carbon dioxide in the experimental cavity. The inner wall of the box cover is connected to multiple fluorescent lamps, and the multiple fluorescent lamps correspond one-to-one to the multiple experimental cavities. The multiple solenoid valves, multiple monitoring devices, and multiple fluorescent lamps are all electrically connected to the controller. The cavity wall of the experimental cavity is also connected to a thermometer for monitoring the soil temperature in the experimental cavity, and the multiple thermometers are electrically connected to the controller. The cavity wall of the experimental cavity is also connected to a hygrometer for monitoring the soil moisture in the experimental cavity, and the multiple hygrometers are electrically connected to the controller. The controller is also electrically connected to a display, and the display is connected to the outer wall of the experimental box.

[0007] Optionally, the experimental box is also connected to a controller, the water pipe is connected to a solenoid valve, multiple heating elements, multiple solenoid valves, multiple monitoring elements, and multiple fluorescent lamps are all electrically connected to the controller, the cavity wall of the experimental cavity is also connected to a thermometer for monitoring the soil temperature in the experimental cavity, and multiple thermometers are electrically connected to the controller. The cavity wall of the experimental cavity is also connected to a hygrometer for monitoring the soil moisture in the experimental cavity, and multiple hygrometers are electrically connected to the controller. The controller is also electrically connected to a display, and the display is connected to the outer wall of the experimental box.

[0008] Optionally, the outer wall of the experimental box is connected with a handle for easy carrying by hand, the experimental box is also connected with a power supply, and the controller is electrically connected to the power supply.

[0009] Optionally, the monitoring device is an infrared gas analyzer.

[0010] Optionally, one end of the water pipe extending into the experimental chamber is connected to a nozzle.

[0011] Compared with the prior art, this application has at least the following beneficial effects:

[0012] By spraying water through the water pipe, the soil in the device can maintain the required humidity. The fluorescent lamp simulates natural light to provide the necessary light energy for soil microbial activity. The heating element adjusts the soil temperature to adapt to the experimental needs under different seasons and climatic conditions. Through these three control factors, different environmental variables (humidity, temperature and light intensity) can be set in the experimental chamber to observe how these factors affect the mineralization process of soil organic carbon promoted by biochar alone or together. The monitoring element monitors and records the changes in carbon dioxide concentration in real time, which is a direct indicator for evaluating the effect of biochar on soil organic carbon mineralization. In addition, the soil in the experimental chamber can be mixed with different amounts of biochar for control group experiments, which helps to clarify the specific effect of the amount of biochar added on the decomposition rate of soil organic matter. Through systematic experimental data analysis, this device can provide a scientific basis for how to control the release of biochar in agricultural production, thereby optimizing soil management and increasing crop yields, while also contributing to soil carbon storage and climate change mitigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more intuitively illustrate the prior art and the present application, several exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0014] Figure 1 A schematic diagram of the overall structure of an indoor culture device for simulating the effect of biochar on soil organic carbon mineralization provided in one embodiment of the present application;

[0015] Figure 2 A schematic diagram of a control system of an indoor culture device for simulating the effect of biochar on soil organic carbon mineralization provided in one embodiment of the present application.

[0016] Description of reference numerals:

[0017] 1. Experimental box; 11. Partition; 12. Experimental chamber; 2. Box cover; 3. Heating element; 4. Water pipe; 41. Solenoid valve; 42. Nozzle; 5. Fluorescent lamp; 6. Handle; 7. Soil; 8. Monitoring element. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0019] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0020] refer to Figure 1-2 The present application discloses an indoor cultivation device for simulating the effect of biochar on soil organic carbon mineralization, comprising an experimental box 1, a plurality of partitions 11 connected to the cavity wall of the accommodating cavity of the experimental box 1 and used to divide the accommodating cavity into a plurality of experimental cavities 12, and a box cover 2 detachably connected to the experimental box 1 and used to cooperate with the partition 11 to seal the experimental cavity 12, the experimental cavity 12 is used to accommodate soil 7 mixed with biochar, the cavity wall of the experimental cavity 12 is connected with a heating element 3 for heating the soil 7 in the experimental cavity 12, the experimental box 1 is connected with a plurality of water pipes 4 for spraying water on the soil 7 in the experimental cavity 12, the plurality of water pipes 4 correspond one-to-one to the plurality of experimental cavities 12, the cavity wall of the experimental cavity 12 is also connected with a monitoring element 8 for monitoring the concentration of carbon dioxide in the experimental cavity 12, the inner side wall of the box cover 2 is connected with a plurality of fluorescent lamps 5, and the plurality of fluorescent lamps 5 correspond one-to-one to the plurality of experimental cavities 12.

[0021] By spraying water through the water pipe 4, the soil 7 in the device can maintain the required humidity, the fluorescent lamp 5 simulates natural light, provides the necessary light energy for the soil 7 microbial activity, and the heating element 3 adjusts the temperature of the soil 7 to adapt to the experimental needs under different seasons and climatic conditions. Through these three control factors, different environmental variables (humidity, temperature and light intensity) can be set in the experimental chamber 12 to observe how these factors affect the mineralization process of soil 7 organic carbon promoted by biochar alone or together. The monitoring element 8 monitors and records the concentration changes of carbon dioxide in real time, which is a direct indicator for evaluating the effect of biochar on the mineralization of soil 7 organic carbon. In addition, the soil 7 in the experimental chamber 12 can be mixed with different amounts of biochar for control group experiments, which helps to clarify the specific effect of the amount of biochar added on the decomposition rate of soil 7 organic matter. Through systematic experimental data analysis, this device can provide a scientific basis for how to control the release of biochar in agricultural production, thereby optimizing soil 7 management and increasing crop yields, while also contributing to soil 7 carbon storage and climate change mitigation.

[0022] The experimental box 1 is also connected to a controller, the water pipe 4 is connected to a solenoid valve 41, multiple heating elements 3, multiple solenoid valves 41, multiple monitoring elements 8, and multiple fluorescent lamps 5 are all electrically connected to the controller, the cavity wall of the experimental cavity 12 is also connected to a thermometer for monitoring the temperature of the soil 7 in the experimental cavity 12, and multiple thermometers are electrically connected to the controller. The cavity wall of the experimental cavity 12 is also connected to a hygrometer for monitoring the humidity of the soil 7 in the experimental cavity 12, and multiple hygrometers are electrically connected to the controller. The controller is also electrically connected to a display, and the display is connected to the outer wall of the experimental box 1.

[0023] The controller manages all key experimental variables and equipment, such as the heating element 3, the solenoid valve 41, the monitoring element 8, the fluorescent lamp 5, the thermometer and the hygrometer. The controller monitors and adjusts the temperature and humidity in the experimental chamber 12 in real time by receiving data from the thermometer and the hygrometer. The solenoid valve 41 controls the water flow of the water pipe 4 to ensure that the humidity of the soil 7 is maintained according to the preset parameters. The heating element 3 and the fluorescent lamp 5 adjust the internal temperature and provide the set light according to the instructions of the controller to simulate different environmental conditions. The display on the outer wall of the experimental box 1 can facilitate the experimenter to intuitively obtain environmental data (temperature, humidity and light intensity) and monitoring data (carbon dioxide concentration).

[0024] The outer wall of the experimental box 1 is connected with a handle 6 for easy carrying by hand, and the experimental box 1 is also connected with a power source, and the controller is electrically connected to the power source. The power source can be a battery.

[0025] By installing a handle 6 on the outer wall of the experimental box 1, the entire device is easy to carry, so that it can be used in different experimental environments. In addition, the power supply design of the device ensures that it can adapt to different power supply environments, whether it is inside a laboratory or a field experimental station, it can be powered and operated smoothly.

[0026] The monitoring device 8 is an infrared gas analyzer.

[0027] In some embodiments, the monitoring element may also be a chemical sensor, an NDIR sensor, etc.

[0028] The daylight lamp 5 can be a high pressure sodium lamp, a metal halide lamp, an LED lamp, a fluorescent lamp or the like.

[0029] The heating element 3 may be a resistance heater, an infrared heater or the like.

[0030] One end of the water delivery pipe 4 extending into the experimental cavity 12 is connected to a nozzle 42. The nozzle 42 allows water to be evenly distributed on the soil 7 in the experimental cavity 12, simulating natural rainfall and ensuring that the soil 7 in each experimental cavity 12 has uniform humidity.

[0031] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0032] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. An indoor cultivation device for simulating the effect of biochar on soil organic carbon mineralization, characterized in that: It includes an experimental box, a plurality of cavity walls connected to the experimental box and used to divide the accommodating cavity into a plurality of experimental cavities, and a box cover detachably connected to the experimental box and used to cooperate with the partitions to seal the experimental cavities, the experimental cavities are used to accommodate soil mixed with biochar, the cavity walls of the experimental cavities are connected with a heating element for heating the soil in the experimental cavities, the experimental box is connected with a plurality of water pipes for spraying water on the soil in the experimental cavities, and the plurality of water pipes correspond to the plurality of experimental cavities one-to-one, the cavity walls of the experimental cavities are also connected with a monitoring element for monitoring the concentration of carbon dioxide in the experimental cavities, and the inner side wall of the box cover is connected with a plurality of fluorescent lamps, and the plurality of fluorescent lamps correspond to the plurality of experimental cavities one-to-one.

2. The indoor culture device according to claim 1, characterized in that: The experimental box is also connected to a controller, the water pipe is connected to a solenoid valve, the multiple heating elements, the multiple solenoid valves, the multiple monitoring elements, and the multiple fluorescent lamps are all electrically connected to the controller, the cavity wall of the experimental cavity is also connected to a thermometer for monitoring the soil temperature in the experimental cavity, and the multiple thermometers are electrically connected to the controller. The cavity wall of the experimental cavity is also connected to a hygrometer for monitoring the soil moisture in the experimental cavity, and the multiple hygrometers are electrically connected to the controller. The controller is also electrically connected to a display, and the display is connected to the outer wall of the experimental box.

3. The indoor culture device according to claim 2, characterized in that: The outer wall of the experimental box is connected with a handle for easy carrying by hand. The experimental box is also connected with a power supply, and the controller is electrically connected to the power supply.

4. The indoor culture device according to claim 2, characterized in that: The monitoring device is an infrared gas analyzer.

5. The indoor culture device according to claim 1, characterized in that: One end of the water delivery pipe extending into the experimental chamber is connected with a spray head.

Images