Device and method for dynamically evaluating toxic effect of microplastic and heavy metal combined pollution on plants

By designing a device that can dynamically adjust environmental parameters and monitor plant physiological data in real time, the problem of difficulty in simulating composite pollution scenarios in the prior art is solved, and the accurate evaluation of the effect of composite pollution of microplastics and heavy metals on phytotoxicity is achieved.

CN120092696APending Publication Date: 2025-06-06CHENGDU UNIVERSITY OF TECHNOLOGY
View PDF 8 Cites 0 Cited by

Patent Information

Application Number
CN202510330670.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-20
Publication Date
2025-06-06

AI Technical Summary

Technical Problem

Existing experimental devices are difficult to simulate dynamically changing compound pollution scenarios in real environments, resulting in the toxicity assessment results deviating from reality, especially in the case of composite pollution between microplastics and heavy metals.

Method used

A device including an incubator, sensor and automatic adjustment system is designed to monitor and adjust environmental parameters such as pH, temperature and light intensity in real time, and to synchronize the physiological and environmental data of plants through multiple sensors to dynamically evaluate the toxic effects of composite pollution on plants.

Benefits of technology

The dynamic assessment of the impact of composite pollution is achieved, the experimental efficiency and result reliability are improved, the data accuracy and experimental conditions are ensured, and the long-term impact of composite pollution on plants can be accurately quantified.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120092696A_ABST
    Figure CN120092696A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of environmental monitoring and ecological toxicology, and discloses a device and method for dynamically evaluating the toxic effect of micro-plastic and heavy metal combined pollution on plants, the device comprises an incubator, the incubator is hinged to a box door, and the box door is provided with an observation window and a control display screen; the observation window facilitates real-time monitoring of plant growth conditions, the control display screen is used for displaying environment parameters and toxicity data, the built-in sensor collects the content of micro-plastics and heavy metals in soil and a hydroponic nutrient solution and plant growth and physiological and biochemical property parameters in real time, and comprehensive evaluation is conducted through the data analysis module. And environmental factors such as illumination and temperature are automatically adjusted. The irrigation and ventilation system is arranged in the culture box, it is ensured that plant roots are evenly subjected to liquid, the ventilation system adjusts the temperature and humidity, and the environment conditions needed by normal growth of plants are maintained; by combining multi-sensor data, the influence of combined pollution on plant physiology and biochemistry is accurately analyzed, experimental parameters are adjusted in real time, a pollution evaluation model is optimized, and the result accuracy is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of environmental monitoring and ecotoxicology, and specifically to a device and method for dynamically evaluating the toxic effects of microplastic and heavy metal composite pollution on plants. Background Art

[0002] At present, the combined pollution of microplastics and heavy metals has become the focus of environmental toxicology research due to its synergistic toxic effects. Studies have shown that microplastics can form complex pollutants by adsorbing heavy metals, changing their bioavailability, leading to oxidative damage to plants, metabolic disorders and other toxicity-intensifying phenomena (such as changes in cell membrane permeability and inhibition of chlorophyll synthesis).

[0003] However, the existing experimental devices are mostly designed for single pollutants, which makes it difficult to simulate the dynamic and complex pollution scenarios in the real environment, resulting in toxicity assessment results that deviate from reality. The following are the shortcomings of the existing technology: 1. Limitations of environmental simulation: Traditional culture systems cannot simultaneously regulate key parameters such as pH, temperature, and light intensity, and lack hydroponic / soil culture compatible designs, making it difficult to compare toxicity differences under different media; 2. Insufficient dynamic control of pollutants: The concentration and particle size distribution of microplastic suspensions are difficult to maintain stable, resulting in poor experimental repeatability; 3. Fragmentation of monitoring methods: physiological indicators (such as chlorophyll fluorescence) and environmental parameters (CO 2 The monitoring equipment for temperature, humidity, and concentration is separated, making it impossible to achieve simultaneous collection and correlation analysis of multi-dimensional data. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for dynamically evaluating the toxic effects of microplastic and heavy metal combined pollution on plants, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for dynamically evaluating the toxic effects of microplastic and heavy metal combined pollution on plants, comprising an incubator, wherein the incubator is hingedly installed with a door, and the door is provided with an observation window and a control display screen. The observation window is convenient for real-time monitoring of plant growth conditions, and the control display screen is used to display environmental parameters and toxicity data. Built-in sensors collect soil, microplastic and heavy metal content in real time, and conduct comprehensive evaluation through a data analysis module, automatically adjust environmental factors such as light and temperature, ensure the growth state of plants in a simulated natural environment, and accurately quantify the long-term impact of combined pollution on plants. A liquid storage tank cavity seat is installed on one side of the incubator.

[0006] Preferably, a plurality of partitions are installed inside the incubator to divide the incubator into several independent areas, each area can be planted with different plants, so as to facilitate comparative analysis of the differences in the toxic effects of complex pollution on different plants. The partitions are made of environmentally friendly and corrosion-resistant materials to ensure that the experimental environment is not disturbed by pollution. The partitions are equidistantly provided with mounting grooves, and the grooves are equipped with grid trays and plant holders with a hydroponic / soil culture compatible design, wherein the plant holder is located above the grid tray, the grid tray facilitates root growth, and the plant holder stabilizes the plants.

[0007] Preferably, a pollutant collecting tank box is installed at the bottom of the partition, and the pollutant collecting tank box is used to collect pollutants generated by plant metabolism.

[0008] Preferably, the liquid storage tank cavity seat has a liquid storage tank built in, the liquid storage tank has a micro peristaltic pump built in, and stores a suspension of microplastic and heavy metal composite pollution. The output end of the micro peristaltic pump is connected to a pipe, the other end of the pipe extends to the top, and is connected to an irrigation pipe through a one-way stop valve. The irrigation pipe is arranged in a loop along the inner wall of the incubator, and a branch pipe is connected to the irrigation pipe under each partition. The irrigation pipe and the branch pipe are equidistantly provided with microporous nozzles to ensure that the suspension is evenly sprayed on the roots of each plant, accurately control the pollution dose, and monitor the changes of plant physiological and biochemical indicators in real time; wherein, a flow and pressure regulating integrated valve is provided on the pipeline, and the valve can automatically adjust the flow and pressure according to preset parameters to ensure the precise delivery of the microplastic suspension. The flow and pressure regulating integrated valve is linked to the control display screen to provide real-time feedback on the adjustment parameters, optimize the experimental conditions, improve data accuracy, and comprehensively evaluate the multi-dimensional impact of composite pollution on plant growth.

[0009] Preferably, a ventilation slot is provided on the other side of the top of the incubator, and a ventilation fan is built in the slot, wherein the ventilation fan is linked with the control display screen, and can automatically adjust the wind speed according to environmental parameters to maintain air circulation and prevent accumulation of pollutants. At the same time, a humidity sensor is equipped to monitor the humidity changes in the box in real time and automatically adjust the humidification or dehumidification equipment to ensure constant humidity in the box and create a microenvironment suitable for plant growth.

[0010] Preferably, a collecting hood is provided on one side of the ventilation slot, and a ventilation duct is connected to the collecting hood. The ventilation duct is arranged in a loop along the inner wall of the incubator, and air nozzles with adjustable wind speed are provided on the ventilation duct. The air nozzles are arranged in groups of three and aimed at each plant area to ensure directional air supply, balanced temperature and humidity distribution, and further optimize the plant growth environment.

[0011] Another technical problem to be solved by the present invention is to provide a method for dynamically evaluating the toxic effect of microplastics and heavy metal composite pollution on plants, which specifically includes the following steps: Step 1: Plant the plants to be tested evenly in the grid trays on the partitions in the incubator, ensuring that the roots of each plant are fully exposed to the grid gaps in the tray to facilitate uniform contact with the suspension; Step 2: Start the micro peristaltic pump, adjust the type, particle size and concentration of microplastics, as well as the type and concentration of heavy metals according to the experimental requirements, transport the microplastic and heavy metal suspension of preset concentration to the irrigation pipe through the pipeline, and spray it evenly to the plant root system through the microporous nozzle, record the suspension flow and pressure data in real time, and record the initial physiological indicators; Step 3: Adjust the ventilation fan and nozzle through the control display screen to ensure the stability of environmental parameters, continuously monitor the growth status of plants, collect plant samples regularly, analyze the changes in physiological and biochemical indicators, compare the initial data, and evaluate the impact of compound pollution; Step 4: Use the data acquisition system in the control display screen to integrate environmental parameters and plant growth data through multiple sensors (such as temperature sensor, humidity sensor, light intensity sensor, infrared CO 2 Sensors, pH sensors, chlorophyll fluorescence sensors, pressure sensors) monitor the concentration of microplastics and heavy metals in the electrolyte as well as the growth and physiological and biochemical parameters of plants (such as leaf length, root length, leaf angle, chlorophyll content, photosynthesis rate, etc.) in real time, and then comprehensively analyze the data based on the preset algorithm model to dynamically evaluate the toxic effects of complex pollution on plants.

[0012] The present invention provides a device and method for dynamically evaluating the toxic effects of microplastics and heavy metal composite pollution on plants. It has the following beneficial effects: (1) The present invention starts a micro peristaltic pump to adjust the type, particle size and concentration of microplastics, as well as the type and concentration of heavy metals according to experimental requirements, and transports a suspension of microplastics and heavy metals of preset concentration to an irrigation pipe through a pipeline, and evenly sprays the suspension to the plant root system through a micro-porous nozzle. The suspension flow and pressure data and initial physiological indicators are recorded in real time, and multiple sensors are used to accurately monitor environmental and plant physiological changes to ensure data accuracy, thereby achieving a dynamic assessment of the impact of complex pollution and improving experimental efficiency and result reliability.

[0013] (2) The present invention sets an irrigation and ventilation system in the incubator to ensure that the plant roots are evenly exposed to liquid. The ventilation system adjusts the temperature and humidity to maintain a constant environment and promote the normal growth of plants. It combines multi-sensor data to accurately analyze the impact of complex pollution on plant physiology and biochemistry, adjust experimental parameters in real time, optimize the pollution assessment model, and improve the accuracy of the results.

[0014] (3) The present invention achieves uniform distribution of suspension and air through the design of micro-pore nozzles and air nozzles, thereby increasing the contact area between plant roots and pollutants, improving pollutant absorption efficiency, and ensuring the scientificity and comparability of experimental data. In combination with multi-sensor real-time monitoring, the present invention accurately captures plant physiological responses, dynamically adjusts experimental conditions, and further optimizes the evaluation model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional view of the internal structure of the present invention; Figure 3 A bottom view of the internal structure of the present invention; Figure 4 It is a top view of the internal structure of the present invention.

[0016] In the figure: incubator 21, door 22, observation window 23, control display screen 24, liquid storage tank cavity seat 25, pollutant collection tank box 26, partition 31, grid tray 32, plant fixing rack 33, liquid storage tank 34, one-way stop valve 35, pipeline 36, irrigation pipe 37, micro-pore nozzle 38, flow pressure regulating integrated valve 39, ventilation fan 41, collection cover 42, ventilation pipe 43, air nozzle 44. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0020] A preferred embodiment of a device and method for dynamically evaluating the toxic effects of microplastics and heavy metal combined pollution on plants provided by the present invention is as follows: Figure 1-4 As shown: a device for dynamically evaluating the toxic effects of microplastic and heavy metal composite pollution on plants, comprising an incubator 21, a light source device is provided on the top of the incubator 21 to provide light for plants, a door 22 is hingedly installed on the incubator 21, an observation window 23 and a control display screen 24 are provided on the door 22, the observation window 23 is convenient for real-time monitoring of plant growth conditions, and the control display screen 24 is used to display environmental parameters and toxicity data, a built-in sensor collects soil, microplastic and heavy metal content in real time, and conducts a comprehensive evaluation through a data analysis module, automatically adjusts environmental factors such as light and temperature, ensures the growth state of plants in a simulated natural environment, and accurately quantifies the long-term impact of composite pollution on plants, and a liquid storage tank cavity seat 25 is installed on one side of the incubator 21; A plurality of partitions 31 are installed inside the incubator 21, dividing the incubator 21 into several independent areas, each area can be planted with different plants, so as to facilitate comparative analysis of the differences in the toxic effects of complex pollution on different plants. The partitions 31 are made of environmentally friendly and corrosion-resistant materials to ensure that the experimental environment is not disturbed by pollution. The partitions 31 are equidistantly provided with mounting grooves, and the grooves are equipped with a grid tray 32 and a plant fixing frame 33 with a hydroponic / soil culture compatible design. The plant fixing frame 33 is located above the grid tray 32, the grid tray 32 is convenient for root growth, and the plant fixing frame 33 stabilizes the plants. A pollutant collecting tank box 26 is installed at the bottom of the partition 31, and the pollutant collecting tank box 26 is used to collect pollutants generated by plant metabolism; The liquid storage tank cavity seat 25 has a liquid storage tank 34 built in, and the liquid storage tank 34 has a micro peristaltic pump built in, and stores a suspension of microplastic and heavy metal composite pollution. The output end of the micro peristaltic pump is connected to a pipe 36, and the other end of the pipe 36 extends to the top, and is connected to an irrigation pipe 37 through a one-way stop valve 35. The irrigation pipe 37 is arranged in a loop along the inner wall of the incubator 21, and a branch pipe is connected to the irrigation pipe 37 under each partition 31. The irrigation pipe 37 and the branch pipe are evenly distributed with microporous nozzles 38 to ensure that the suspension of microplastic and heavy metal composite pollution is evenly sprayed on the roots of each plant, accurately control the pollution dose, and monitor the changes in plant physiological and biochemical indicators in real time; wherein, a flow pressure regulating integrated valve 39 is provided on the pipe 36, and the valve 39 can automatically adjust the flow and pressure according to preset parameters to ensure the precise delivery of the microplastic suspension. The flow pressure regulating integrated valve 39 is linked with the control display screen 24 to feedback the adjustment parameters in real time, optimize the experimental conditions, improve the data accuracy, and comprehensively evaluate the multi-dimensional impact of composite pollution on plant growth; A ventilation slot is provided on the other side of the top of the incubator 21, and a ventilation fan 41 is built in the slot. The ventilation fan 41 is linked with the control display screen 24, and can automatically adjust the wind speed according to environmental parameters to maintain air circulation and prevent the accumulation of pollutants. At the same time, a humidity sensor is equipped to monitor the humidity changes in the box in real time, and automatically adjust the humidification or dehumidification equipment to ensure that the humidity in the box is constant, creating a microenvironment suitable for plant growth; A collecting hood 42 is provided on one side of the ventilation slot, and a ventilation duct 43 is connected to the collecting hood 42. The ventilation duct 43 is arranged in a loop along the inner wall of the incubator 21, and an air nozzle 44 with adjustable wind speed is provided on the ventilation duct 43. The air nozzles 44 are arranged in groups of three and aimed at each plant area to ensure directional air supply, balanced temperature and humidity distribution, and further optimize the plant growth environment.

[0021] In this embodiment, by adopting a grid tray 32 with a hydroponic / soil culture compatible design, different types of soil or hydroponic substrates can be placed on the grid tray 32 to flexibly adapt to the growth needs of different plants, and multiple sensors are set to monitor key parameters such as soil moisture and nutrient content in real time. At the same time, the plant fixing frame 33 can be adjusted according to the plant height to ensure the stable growth of plants at all stages. According to experimental requirements, the concentration and irrigation frequency of the microplastic and heavy metal composite pollution suspension are adjusted to accurately simulate the actual polluted environment, and the plant growth data is recorded in real time. Combined with the multi-sensor monitoring system, the comprehensive impact of composite pollution on plant physiological ecology is comprehensively analyzed, providing a scientific basis for environmental restoration and plant resistance research.

[0022] In addition, the door 22 is also equipped with an LED growth lamp, which can automatically adjust the spectrum and light intensity according to the plant growth stage, simulate the natural light environment, promote photosynthesis, enhance plant resistance, and further ensure the reliability and practicality of the experimental data. The LED growth lamp is linked with the control display screen 24 to adjust the lighting parameters in real time, accurately simulate the changes in light in different seasons, ensure that the plant growth cycle is not disturbed by the outside world, improve the scientificity and repeatability of the experimental data, and provide strong support for in-depth research on the impact of compound pollution. Example 2

[0023] See also Figure 1-Figure 4 , and on the basis of Example 1, it is further obtained that: Another technical problem to be solved by the present invention is to provide a method for dynamically evaluating the toxic effect of microplastics and heavy metal composite pollution on plants, and the method specifically includes the following steps: Step 1: Plant the plants to be tested evenly in the grid-shaped trays 32 on the partitions 31 in the incubator 21, ensuring that the roots of each plant are fully exposed to the grid gaps of the tray to facilitate uniform contact with the suspension; Step 2: Start the micro peristaltic pump, adjust the type, particle size and concentration of microplastics, as well as the type and concentration of heavy metals according to the experimental requirements, transport the microplastic and heavy metal suspension of preset concentration to the irrigation pipe 37 through the pipeline 36, and spray it evenly to the plant root system through the microporous nozzle 38, and record the suspension flow and pressure data in real time, and record the initial physiological indicators; Step 3: Adjust the ventilation fan 41 and the air nozzle 44 by controlling the display screen 24 to ensure the stability of environmental parameters, continuously monitor the growth status of plants, regularly collect plant samples, analyze changes in physiological and biochemical indicators, compare initial data, and evaluate the impact of complex pollution; Step 4: Use the data acquisition system in the control display screen 24 to integrate environmental parameters and plant growth data through multiple sensors (such as temperature sensor, humidity sensor, light intensity sensor, infrared CO 2 Sensors, pH sensors, chlorophyll fluorescence sensors, pressure sensors) monitor the concentrations of microplastics and heavy metals in the electrolyte as well as plant growth and physiological and biochemical parameters (such as chlorophyll content, photosynthesis rate, soluble sugar content, soluble protein content, antioxidant enzyme activity, etc.) in real time, and then comprehensively analyze the data based on the preset algorithm model to dynamically evaluate the toxic effects of complex pollution on plants.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for dynamically evaluating the toxic effects of microplastic and heavy metal combined pollution on plants, comprising an incubator (21), characterized in that: The incubator (21) is hingedly mounted with a door (22), and the door (22) is provided with an observation window (23) and a control display screen (24). The observation window (23) is convenient for real-time monitoring of plant growth conditions, and the control display screen (24) is used to display environmental parameters and toxicity data. Built-in sensors collect microplastic and heavy metal contents in the soil and hydroponic system in real time, and conduct a comprehensive evaluation through a data analysis module, automatically adjusting environmental factors such as light and temperature, ensuring the growth state of the plants in a simulated natural environment, and accurately quantifying the long-term impact of complex pollution on the plants. A liquid storage tank cavity seat (25) is installed on one side of the incubator (21).

2. The device for dynamically evaluating the toxic effects of microplastics and heavy metals combined pollution on plants according to claim 1, characterized in that: The culture box (21) is provided with a plurality of partitions (31) inside, dividing the culture box (21) into a plurality of independent areas, each area being capable of planting different plants, so as to facilitate comparative analysis of differences in toxic effects of complex pollution on different plants, the partitions (31) being made of environmentally friendly and corrosion-resistant materials, ensuring that the experimental environment is not disturbed by pollution, the partitions (31) being provided with mounting grooves at equal intervals, and the grooves being provided with a grid tray (32) and a plant fixing frame (33) with a hydroponic / soil culture compatible design, wherein the plant fixing frame (33) is located above the grid tray (32), the grid tray (32) being convenient for root growth, and the plant fixing frame (33) being stable for the plants.

3. The device for dynamically evaluating the toxic effects of microplastics and heavy metals combined pollution on plants according to claim 2, characterized in that: A pollutant collecting tank box (26) is installed at the bottom of the partition (31), and the pollutant collecting tank box (26) is used to collect pollutants generated by plant metabolism.

4. The device for dynamically evaluating the toxic effects of microplastics and heavy metals combined pollution on plants according to claim 1, characterized in that: The liquid storage tank cavity seat (25) has a liquid storage tank (34) built therein, the liquid storage tank (34) has a micro peristaltic pump built therein, and stores a suspension of microplastic and heavy metal composite pollution, the output end of the micro peristaltic pump is connected to a pipe (36), the other end of the pipe (36) extends to the top and is connected to an irrigation pipe (37) via a one-way stop valve (35), the irrigation pipe (37) is arranged in a loop along the inner wall of the incubator (21), and a branch pipe is connected to the irrigation pipe (37) below each partition (31), and the irrigation pipe (37) and the branch pipe are evenly spaced and arranged. There is a micro-hole nozzle (38) to ensure that the suspension is evenly sprayed onto the roots of each plant, accurately control the pollution dose, and monitor the changes in plant physiological and biochemical indicators in real time; wherein, a flow pressure regulating integrated valve (39) is provided on the pipeline (36), and the valve (39) can automatically adjust the flow and pressure according to preset parameters to ensure the accurate delivery of the microplastic suspension. The flow pressure regulating integrated valve (39) is linked with the control display screen (24) to provide real-time feedback on the adjustment parameters, optimize the experimental conditions, improve the data accuracy, and comprehensively evaluate the multi-dimensional impact of complex pollution on plant growth.

5. The device for dynamically evaluating the toxic effects of microplastics and heavy metals combined pollution on plants according to claim 1, characterized in that: The other side of the top of the incubator (21) is provided with a ventilation slot, in which a ventilation fan (41) is built. The ventilation fan (41) is linked with the control display screen (24) to automatically adjust the wind speed according to environmental parameters to maintain air circulation and prevent the accumulation of pollutants. A humidity sensor is also provided to monitor the humidity changes in the box in real time and automatically adjust the humidification or dehumidification equipment to ensure that the humidity in the box is constant, thereby creating a microenvironment suitable for plant growth.

6. The device for dynamically evaluating the toxic effects of microplastics and heavy metals combined pollution on plants according to claim 1, characterized in that: A collecting cover (42) is provided on one side of the ventilation slot, and a ventilation pipe (43) is provided in communication with the collecting cover (42). The ventilation pipe (43) is arranged in a loop along the inner wall of the incubator (21), and air nozzles (44) with adjustable wind speed are provided on the ventilation pipe (43). The air nozzles (44) are arranged in groups of three and are aimed at each plant area to ensure directional air supply, balance temperature and humidity distribution, and further optimize the plant growth environment.

7. A method for dynamically evaluating the toxic effects of microplastics and heavy metals combined pollution on plants according to claims 1-6, characterized in that: The method specifically comprises the following steps: Step 1: Plant the plants to be tested evenly in the grid-shaped trays (32) on the partitions (31) in the culture box (21), ensuring that the root system of each plant is fully exposed to the grid gaps of the tray to facilitate uniform contact with the suspension; Step 2: Start the micro peristaltic pump, adjust the type, particle size and concentration of microplastics, as well as the type and concentration of heavy metals according to experimental requirements, transport the microplastic and heavy metal suspension of preset concentrations through the pipeline (36) to the irrigation pipe (37), and spray it evenly onto the plant root system through the microporous nozzle (38), and record the suspension flow and pressure data in real time, and record the initial physiological indicators; Step 3: adjusting the ventilation fan (41) and the air nozzle (44) through the control display screen (24) to ensure the stability of environmental parameters, continuously monitoring the growth status of plants, regularly collecting plant samples, analyzing changes in physiological and biochemical indicators, comparing initial data, and evaluating the impact of complex pollution; Step 4: Use the data acquisition system in the control display screen (24) to integrate environmental parameters and plant growth data, and use multiple sensors (such as temperature sensors, humidity sensors, light intensity sensors, infrared CO2 sensors, pH sensors, chlorophyll fluorescence sensors, pressure sensors) to monitor the concentration of microplastics and heavy metals in the soil / hydroponic system and the growth and physiological and biochemical parameters of plants (such as leaf length, root length, leaf angle, chlorophyll content, photosynthesis rate, etc.) in real time. Then, based on the preset algorithm model, comprehensively analyze the data and dynamically evaluate the toxic effects of complex pollution on plants.

Citation Information

Patent Citations

  • Method for measuring stress-resistant capability of plants

    CN105850539A

  • Device for evaluating toxicity effect of pollutants on soil organisms

    CN111443192A

  • Physicochemical data acquisition and analysis processing system for chemical fertilizer stress contaminated soil

    CN111781331A

  • Cultivation and seedling raising device based on citrus variety breeding and breeding method

    CN117730708A

  • Intelligent plant cultivation box for simulating plant abiotic stress

    CN119183839A