45 results about "Soil solution" patented technology

The invention provides an agricultural environment monitoring method and system based on the Internet of Things. According to the method, multi-source data weights are dynamically distributed through a soil sensor array connected with Internet of Things nodes, and a global soil parameter set is generated; deploying a micro-electro-mechanical micro-fluidic chip in the coverage area to carry out soil solution selective permeation, converting the target ion concentration into an electric signal, and synchronously transmitting the electric signal and soil parameters; historical time series data are extracted, coherence is established through time correlation analysis, and undeployed area data are filled in combination with a spatial interpolation algorithm to construct a dynamic prediction model; according to the nutrient space change trend output by the model, crop growth requirements are matched to generate a fertilization amount adjustment instruction, and the fertilization amount adjustment instruction is issued to field fertilization equipment through the Internet of Things to execute dynamic regulation. Space-time precise sensing of soil nutrients and self-adaptive fertilization regulation and control are realized, and the utilization efficiency of agricultural resources and crop growth sustainability are improved.

The invention discloses a method for predicting the irrigation amount of crops in an arid saline-alkali soil area and related equipment. The method comprises the steps that the potential evapotranspiration of a target crop is calculated through a double-source evapotranspiration mechanism model based on key meteorological parameters, obtained through prediction, of a target area, and the leaf area index and the plant height are dynamically updated according to the accumulated temperature process; respectively constructing different stress inhibition functions aiming at the attention salt ions and the pH value in the saline-alkali soil solution, and applying composite inhibition at the stomatal conductance and / or the apparent evapotranspiration resistance site to correct the potential evapotranspiration so as to obtain the ideal crop evapotranspiration corrected by the salinity and the pH value; and based on the corrected ideal crop evapotranspiration, predicting day-by-day irrigation amount and water distribution schedule suggestions in a future preset period. The method can solve the problem that current crop irrigation of saline-alkali soil in an arid inland region depends on experience, influences on different salt types and contents are caused, and quantitative analysis is lacked.

The invention discloses a self-adaptive drip irrigation control system and method fused with a soil solution optimal model, and belongs to the field of agricultural irrigation. The system integrates a layered soil and soil solution monitoring module, a weather and crop growth monitoring module, a data acquisition and management module, an irrigation and fertilization execution module and an operation feedback module. Through deep-buried multi-layer soil sensing and solution collection, real-time monitoring of key parameters such as moisture and nutrients of different soil layers is achieved, and a dynamic target is set in combination with crop growth requirements and meteorological data. The system adopts a soil solution optimal model, performs dynamic balance analysis on monitoring data and target parameters, introduces a multi-factor linkage and layered regulation strategy, intelligently generates an optimal water and fertilizer scheme and accurately executes the optimal water and fertilizer scheme. Automatic recording and quality feedback are achieved in the whole process, model self-learning and scheme optimization are supported, the crop nutrient utilization rate is increased, resource waste is reduced, and efficient and intelligent precision agricultural water and fertilizer management is achieved.

The invention discloses a method for evaluating and strengthening interface characteristics of a copper-based composite material, and relates to the technical field of copper-based composite materials. A soil solution and carbon quantum dots are prepared, and the carbon quantum dots are added into the soil solution; the method comprises the following steps: simulating a corrosion process of copper-based composite materials with different aluminum contents in soil solutions with different carbon quantum dot contents, and carrying out polarization curve and electrochemical impedance spectroscopy analysis on the corroded copper-based composite materials by adopting an electrochemical workstation to obtain charge transfer resistance and impedance modulus values of the copper alloy composite materials; meanwhile, SEM, EDS and three-dimensional surface contour analysis are combined, and the surface morphology and roughness of the copper-based composite material are obtained; according to the method, the electrochemical method and the corrosion surface characterization method are combined, the change of the surface and interface characteristics of the copper-based composite material corresponding to different matching materials can be rapidly evaluated, so that the purpose of protecting the alloy material is achieved, and aluminum and carbon quantum dots are found to be capable of synergistically promoting the protection of the copper-based composite material.

The invention discloses a soil column test device and method for plant root zone micro-ecology simulation research. The soil column test device comprises a soil column test model module and a solution collection module. The soil column experimental model module comprises a soil filling container with an upper cover and a lower cover, a plant root simulation device, a simulated root exudate sampling device, a soil oxidation-reduction potential monitoring device and a gas collection device, and the solution collection module is used for collecting liquid in the simulation process. According to the device, the plant root simulating device, the root exudate simulating and sampling device, the soil oxidation-reduction state monitoring device and the gas and soil solution collecting device are integrated, so that comprehensive simulation and monitoring of multiple factors of a plant root zone are realized. The device is low in processing cost, convenient to use and easy to operate, all parts are detachable and reusable, multiple pieces of environmental parameter information can be obtained, and the device has important significance on plant root zone micro-ecology research.

This invention relates to the field of soil environmental monitoring technology, and in particular discloses a sampling device for simultaneously collecting in-situ soil solutions and gases. The device comprises a support frame unit, a sampling device installed within the support frame unit, a drive device installed on the support frame unit, and a controller for controlling the drive device and the sampling device. The sampling device includes an aperture opener for drilling, a collector for simultaneously collecting soil solutions and gases from the drilled hole, and a gas-liquid separation unit for separating the collected solutions and gases. This device is a complete sampling system that not only reduces equipment costs and improves sampling efficiency, but also ensures the correlation and accuracy of synchronous, in-situ sampling data. By simultaneously, in-situ, and isolatedly collecting soil solutions and soil gases from the same borehole and at the same depth, it avoids cross-contamination and atmospheric interference, significantly improving sampling efficiency and data comparability, and providing a reliable technical means for research on multi-media soil environments.

The invention relates to the technical field of soil environment monitoring, and particularly discloses a sampling device for synchronously collecting solution and gas in in-situ soil, which is provided with a support frame unit, a sampling device arranged in the support frame unit, a driving device arranged on the support frame unit and a controller for controlling and connecting the driving device and the sampling device. The sampling device comprises a tapper used for tapping, a collector used for simultaneously collecting a soil solution and gas from the tapped hole and a gas-liquid separation unit used for separating the collected solution and gas, and the device is a set of sampling system, so that the equipment cost is reduced, the sampling efficiency is improved, and the sampling time is shortened. The relevance and accuracy of synchronous and in-situ sampling data are ensured; through synchronous, in-situ and isolated collection of the soil solution and the soil gas in the same drill hole and the same depth, cross contamination and atmospheric interference are avoided, the sampling efficiency and the data comparability are remarkably improved, and a reliable technical means is provided for soil multi-medium environment research.

The application belongs to the technical field of saline-alkali soil improvement, and discloses a method for improving saline-alkali soil by using organic acid pretreated straw decomposition liquid. The application uses a mixed organic acid solution combined with fresh soil solution to pretreat straw, breaks the dense crystalline structure of straw fiber, increases the adhesion capacity of straw to salt ions, and the prepared soluble straw decomposition liquid can increase the activity of soil colloid, promote the release of adsorbed salt ions in the soil, improve the migration capacity of salt ions, and realize efficient removal of salt ions. The prepared pretreated straw material and decomposition liquid are environmentally friendly, non-toxic and harmless, and can be applied to saline-alkali soil improvement, promote the dissolution and infiltration of salt ions in saline-alkali soil, and prevent the surface aggregation of salt ions in the soil surface. The method has the characteristics of low cost, simple operation and obvious effect.

The utility model relates to the technical field of soil mechanical composition detection, in particular to a multi-station soil mechanical composition stirring and liquid absorbing full-automatic integrated device, which is characterized in that when the device is used, different soil particles are respectively placed in a plurality of groups of measuring cylinders; the stirring and liquid absorbing assembly is matched with the moving assembly to stir the soil solution in the second group of measuring cylinders and absorb the soil solution in the first group of measuring cylinders at the same time; after the stirring and liquid suction assembly stirs the soil solution in the second group of measuring cylinders, the soil solution adsorbed in the first group of measuring cylinders is dropped into the vessel assembly under the cooperation of the moving assembly, sampling is completed, high efficiency and convenience are achieved, and the liquid suction amount error is reduced; comprising a working table, a first supporting frame, a moving assembly and measuring cylinders, the first supporting frame is arranged at the top end of the working table, the moving assembly is arranged on the first supporting frame, multiple sets of measuring cylinders are placed at the top end of the working table, and the stirring and liquid absorbing assembly is arranged on the moving assembly.

The application belongs to the technical field of microorganisms, discloses a strain of Desmodesmus arsenicoxydans with arsenic oxidation function and application thereof in soil remediation, and specifically discloses a strain of Desmodesmus arsenicoxydans B3. The application separates a strain of microalgae B3 with arsenic oxidation function, the strain belongs to the genus Desmodesmus and can oxidize As(III) under day-night alternation conditions. Arsenic forms in a flooded soil solution are determined by using a liquid chromatography-atomic fluorescence spectrometer. Arsenic form analysis shows that As(III) is oxidized into As(V), the concentration of As(III) and total arsenic in soil pore water is reduced, which indicates that the Desmodesmus arsenicoxydans B3 can effectively oxidize As(III) and remove total arsenic in the soil solution under the condition of flooding, reduce the biological availability of arsenic, and play an important role in remediation of arsenic contaminated soil.

The application provides a soil detection sensor with a measuring needle and a soil layer pollution detection device, and belongs to the technical field of sensors.The soil detection sensor with a measuring needle comprises a measuring needle assembly and a detection device.The measuring needle assembly has a shell, and an inner cavity and an intermediate insulating layer attached to the inner wall of the shell are arranged in the shell.The lower end of the inner cavity is a solution containing space, and the lower end of the shell is used for inserting into soil and is provided with a small pore to allow soil solution to enter the solution containing space.The detection device is arranged in the inner cavity to detect soil.The sensor is of an insertion type, is convenient to use, and has high detection efficiency.

The utility model discloses soil detection dissolving equipment which comprises a shell, a liquid inlet pipe positioned at the upper part of the shell and a liquid outlet pipe positioned at the lower part of the shell, the cover plate is located on the upper portion of a first hole in the upper end of the shell, the motor is fixedly connected to the upper end of the cover plate, the sealing cover is fixedly connected with the output end, stretching into the shell, of the motor, and the first charging barrel is detachably connected with the sealing cover. And a plurality of second holes are uniformly formed in the peripheral wall of the first charging barrel. The device disclosed by the utility model has the advantages that a certain amount of soil to be detected is placed in the cylinder, the first charging barrel and the sealing cover are sealed through the bolt, and the sealing gasket is arranged between the sealing cover and the first charging barrel. The sealing ring is arranged between the sealing cover and the cylinder, so that the sealing performance is effectively ensured; the motor drives the sealing cover and the first charging barrel to rotate, so that the stirring rod rotates to fully dissolve soil in the cylinder, and the cylinder can also separate insoluble stones from a soil solution.

The invention relates to a microfluidic nutrient measurement sensor system for the direct automated measurement of nutrients from soil solution, comprising a sensor box having at least one sensor; an energy supply; a controller; a soil solution extraction unit having a first pump; reservoirs for storing solutions; and a second pump, and is characterised in that the sensor is designed as a chip having microfluidics, the energy supply is designed having an internal current source, and the soil solution extraction unit is designed having a first pump and a suction head made of a porous ceramic. The invention additionally relates to a method for the direct automated measurement of nutrients from soil solution in a sensor system, and to a microfluidic nutrient measurement sensor system assembly.

The application discloses a crop irrigation amount prediction method in arid and saline-alkali regions and related equipment. The method comprises the following steps: calculating the potential evapotranspiration of the target crop based on the predicted key meteorological parameters of the target region through a dual-source evapotranspiration mechanism model, and dynamically updating the leaf area index and plant height according to the accumulated temperature process; constructing different stress inhibition functions for the concerned salt ions and the pH value in the soil solution of the saline-alkali soil, respectively, applying a composite inhibition at the stomatal conductance and / or apparent evapotranspiration resistance site to correct the potential evapotranspiration, and obtaining the ideal crop evapotranspiration corrected by the salt and pH value; and predicting the daily irrigation amount and water distribution schedule suggestion within a future preset period based on the corrected ideal crop evapotranspiration. The method can solve the problem that the current crop irrigation in arid inland saline-alkali areas relies on experience and lacks quantitative analysis of the influence caused by different salt types and contents.

The invention provides an ultra-fast soil DNA extraction method and application thereof. The method comprises the following steps: S1, sample pretreatment: taking 50 mg of a soil sample, putting the soil sample in a 200 [mu] L ultrasonic tube, adding 20 mg of a reagent A and 50 [mu] L of Buffer A, carrying out full and uniform vortex mixing, putting the mixture in an ultrasonic instrument, setting the water temperature at 37 DEG C, and carrying out focused ultrasound for 2 minutes; s2, extraction of soil DNA: transferring the pretreated sample into a 2 mL ultrasonic tube, adding 450 [mu] L of Buffer B, carrying out vortex mixing, adding 20 [mu] L of Buffer C, carrying out uniform mixing, placing the mixture in an ultrasonic instrument, setting the water temperature at 37 DEG C, and carrying out focused ultrasound for 2-5 min; s3, purification of the soil DNA: after the ultrasonic treatment is finished, taking out the ultrasonic tube, transferring all the solution subjected to the ultrasonic treatment into a 2mL centrifugal tube, and centrifuging for 5-10 minutes at the temperature of 4 DEG C and 12000g to obtain supernate, namely a soil DNA solution. The soil DNA extraction method disclosed by the invention is short in time, low in cost, simple in operation steps, suitable for various types of soil samples, and very suitable for popularization, and the whole experiment process does not exceed 30 minutes.

The invention relates to the technical field of soil heavy metal removal, in particular to a method for efficiently removing soil heavy metal based on a magnetic removal technology and application. The invention provides an innovative method for combining soil heavy metal activation and magnetic removal technologies. By applying one of the activating agents EDDS, RLs and CaCl2, insoluble heavy metals in the soil can be converted into soluble heavy metals and transferred into a soil solution, the content of the heavy metals in the soil solution is remarkably increased, and then the heavy metals are efficiently removed through the adsorption effect of the magnetic material on the heavy metals. According to the method, through the pre-activation step, the problem that a traditional magnetic removal technology depends on the form of the heavy metal is solved, and the utilization efficiency of a magnetic material and the overall removal efficiency of the heavy metal are remarkably improved. The method has important practical application value and popularization prospect for rapidly repairing the heavy metal polluted farmland and guaranteeing the safety of the cultivated land and sustainable production of grains.

The application discloses a kind of triaxial sample preparation device and method based on underwater deposition method, including saturator, support, water base, vacuum pump and three membrane mechanism, saturator is used for the container of underwater sand soil vacuum saturation, saturator top cover is equipped with the pipeline of connecting pressure tube, and is equipped with first valve to control on-off, pressure tube other end is connected with vacuum pump.Saturator below is equipped with the pipeline of connecting rubber tube, and is equipped with second valve to control on-off.The three membrane mechanism is the mold of triaxial sample, and water base is installed on top.Saturator is fixed on the three membrane mechanism and water base by support.The device simplifies the process of preparing triaxial sample of conventional underwater deposition method, eliminates sample heating, injects airless water, overnight cooling, sand soil solution is transferred between flask and funnel and other processes, greatly shorten the time of sample preparation, reduce test operation threshold, improve test reliability.

The present disclosure relates to the field of a soil analysis apparatus. The apparatus comprises an enclosure, a provision for introducing a soil solution to be analyse, reservoir, a plurality of storage containers to store reagent solution, a frame member having a plurality of apertures to support a plurality of dispensing pipes, at least one pump coupled to a control unit and in fluid communication with the storage containers and the reservoir to dispense a predetermined quantity of the reagent and the soil solution into a receptacle. Further, at least one robotic arm assembly coupled with a control unit, traverses within the enclosure to receive the soil solution and reagents solution and to perform a mixing operation to obtain a mixture of soil solution and reagent solution. Further, an image capturing unit is present to capture images of the mixture to analyse the soil properties and nutrient content.

The application discloses a banana precise fertilization method based on nitrate nitrogen concentration in soil solution, and specific steps are as follows: collecting soil solution, immediately determining the concentration of nitrate nitrogen in the soil solution on site by ion meter, or carrying out cold storage treatment, and determining the concentration of nitrate nitrogen in the laboratory; comparing the determined concentration of nitrate nitrogen with the range of the concentration of nitrate nitrogen in the soil solution suitable for banana growth; and determining a fertilization scheme according to the comparison result. The application determines the content of nitrate nitrogen in the soil solution, takes the nitrogen level in the soil solution as a reference index for banana nitrogen fertilizer application, accurately judges the nitrogen level of banana plants, and precisely adjusts fertilization, so that the problems of large workload, serious lag and poor precision of the traditional fertilization method are solved. The application also accurately gives the range of the concentration of nitrate nitrogen in the soil solution suitable for banana growth, i.e. 70-280 mg / L ‑1 , which provides a clear basis for banana nitrogen fertilizer application.

The application belongs to the technical field of functional adsorption materials, and particularly discloses a preparation method of highly renewable ultrathin two-dimensional adsorbents and application thereof, wherein the preparation method comprises the following steps: slowly adding a Na3VO4 solution into an InCl3 solution, and stirring to obtain a uniformly mixed brownish soil solution; adjusting the pH of the obtained brownish soil solution to 1-3 by using a nitric acid solution, ensuring that the solution finally presents a transparent bright yellow color, and then transferring the solution into a polytetrafluoroethylene-lined high-pressure reaction kettle for a hydrothermal synthesis reaction; after the reaction is completed, the high-pressure reaction kettle is naturally cooled to room temperature, the obtained reaction product is centrifugally separated, and then is sequentially cleaned multiple times by using deionized water and ethanol, and finally is treated by ultrasonic waves to obtain an ultrathin two-dimensional InVO4 nanometer adsorbent with strong negative charges on the surface. The preparation method is simple, the adsorption reaction is mild and rapid, and can realize the enrichment of ppb-level ultra-low concentration rare earth ions by nearly 100 times.

The invention discloses an organic fertilizer returning soil nutrient real-time monitoring system, and relates to the technical field of agricultural sensing, and the system comprises a three-dimensional gradient sensitive field electrode array, a neuromorphic coding module, a dual-channel space-time inversion verification module and a closed-loop control module; the electrode array comprises a main electrode and an auxiliary electrode which are formed by microneedle clusters which are non-uniformly distributed, the main electrode works in a conventional concentration detection mode, the auxiliary electrode is configured to be in a high dynamic threshold triggering mode, and the main electrode and the auxiliary electrode cooperatively monitor the ion concentration of a soil solution. The organic fertilizer returning soil nutrient real-time monitoring system overcomes the problem of sensor response lag caused by dramatic change of nutrient concentration at the initial stage of organic fertilizer mineralization, eliminates nonlinear distortion of a high-concentration area by combining a two-channel space-time inversion verification and chaos early warning driven hardware dynamic reconstruction technology, and improves the real-time monitoring accuracy of the organic fertilizer returning soil nutrient. The real and dynamic accurate capture of nutrients in the sudden change process is realized, and the reliability of monitoring data in a key window period is improved.

The present application relates to the technical field of drainage board, and particularly relates to a fuzzy comprehensive evaluation method, equipment and medium for degradable drainage board degradation performance, which comprises the following steps: preparing PLA / PBAT composite modified degradable drainage board and burying the drainage board in soft soil samples or simulated soil solution environment; testing initial performance of the drainage board and mechanical properties, hydraulic performance and molecular structure related indexes of the drainage board at different predetermined ages; performing dimensionless processing on the test indexes to obtain corresponding retention rates and glass transition temperature retention degrees; based on the dimensionless indexes, constructing an evaluation index factor set and a comment set, determining index weights by using a combination method of entropy weight method and analytic hierarchy process, and performing fuzzy comprehensive evaluation by using minimum upper bound and type fuzzy operators to calculate a comprehensive evaluation score; combining with an engineering predetermined safety threshold, determining a drainage board degradation completion time or a reasonable service upper limit according to a change curve of the comprehensive evaluation score with the age, and constructing a multi-index evaluation system, which reduces engineering risks caused by single index evaluation.

The invention discloses a metal ion inhibition concentration prediction method based on machine learning, and the method comprises the steps: obtaining metal ions in to-be-detected soil, and determining first environment characteristic parameters of the metal ions and a first biological ligand in the to-be-detected soil by using a biological ligand model BLM; extracting first physicochemical characteristics of metal ions by utilizing quantitative ion characteristic parameters and an activity relation model QICAR, and inputting the first environment characteristic parameters, the first physicochemical characteristics, a set first inhibition rate of plant root elongation and plant variety codes into a trained category type gradient boosting model CatBoost; the metal ion concentration corresponding to the first inhibition ratio is obtained; a training sample and a test sample of the CatBoost model are composed of a toxicity effect data sample of a metal ion sample on a plant sample in a simulated soil solution condition, and the toxicity effect data sample comprises the metal ion sample, the plant sample and an environmental parameter sample.

The application relates to the technical field of soil determination, in particular to a soil health index rapid detection technology device, which comprises a base, a support fixedly connected to the base, a sampling box fixedly connected to one side of the support, an oscillation assembly fixedly connected in the sampling box, the oscillation assembly being fixedly connected to one side of a frame assembly, a soil taking assembly being fixedly connected to the base in the frame assembly, and a sampling assembly being fixedly connected to one side of the support in the frame assembly. The application can quickly obtain soil samples at a certain depth under the ground, can extract soil samples at different depths under the ground, can ensure that soil samples at different depths are not mixed, and can assist in oscillation and mixing of soil solutions in multiple sampling cups, so that manual oscillation and mixing in the field is not needed.

The invention discloses a device for testing influence of carbon dioxide geological sequestration multi-path leakage on soil environment, which comprises a test container, a shaft leakage simulation unit, a fault zone leakage simulation unit and a cover layer leakage simulation unit are arranged in the test container, then soil is filled in the test container, and a three-in-one monitoring device and a soil solution sampler are arranged in the soil. The shaft leakage simulation unit, the fault zone leakage simulation unit and the cover layer leakage simulation unit are connected with a gas supply device, and the gas supply device is used for independently supplying carbon dioxide gas to each simulation unit. The three-in-one monitoring device and the soil solution sampler are connected with the data acquisition device. And the gas supply device and the data acquisition device are connected with the control device. The problems of single-path leakage simulation limitation and incomplete soil parameter monitoring in the prior art are solved.

The present application relates to a frozen soil unfrozen water parameterization model based on the microcosmic freezing characteristics of combined water, which first collects low-salt or salt-free soil samples, measures the soil temperature T , specific surface area A S and soil solution concentration n 0, and limits n 0≤0.05mol / L; then obtains the mass water content of the soil w u The present application clarifies the main causes of unfrozen water in frozen soil by revealing the relationship between the microcosmic freezing characteristics of combined water and the macroscopic freezing characteristics of soil, calculates the unfrozen water content of salt-free and low-salt frozen soil, and provides an innovative research method for the public to intuitively understand the freezing and thawing behavior of frozen soil, the freezing and thawing process of frozen soil regions, and the simulation of hydrology and ecological environment.

The invention belongs to the technical field of microbial communities, and relates to a fertility-increasing microorganism screening and synthetic community construction method for saline-alkali soil remediation. The construction method comprises the following steps: carrying out domestication and enrichment culture on a pretreated soil sample to be repaired by using an improved culture medium to obtain a functional flora, separating to obtain a plurality of functional strains, monitoring a growth curve of the functional strains in a simulated soil solution, constructing a growth rate evaluation model, and dividing the strains into a rapid growth type strain and a slow growth type strain; the method comprises the following steps: screening strains with saline-alkaline resistance, adsorption colonization and phosphorus-solubilizing and nitrogen-fixing properties to obtain dominant target strains, and combining the target strains to obtain a synthetic microbial community containing more than one rapid or slow growth type phosphorus-solubilizing / nitrogen-fixing strain. According to the invention, the slow growth type strain is incorporated into the design of the synthetic inoculant, and forms an ecological alliance with complementary functions and growth strategies with the rapid growth type strain, and the efficient and lasting soil fertility increasing effect is achieved. The method has a wide application prospect in the fields of ecological system restoration and the like.

The invention relates to a preparation method of a micro-plastic surface biological membrane, which comprises the following steps: filling micro-plastic into a sterilization nylon mesh bag, and sterilizing; preparing a soil solution which contains natural microbial communities, and filtering the soil solution by using a filter membrane after oscillating and centrifuging the soil solution; placing the sterilization mesh bag filled with the micro-plastic in a soil solution, and carrying out shaking culture; in the shake culture process, micro-plastic samples are collected in stages and washed with sterile PBS to remove unattached microorganisms. According to the method, the natural microbial community in the soil solution is used as an inoculation source for forming the biological membrane on the surface of the micro-plastic, limitation of traditional artificial strains is abandoned, and the method is closer to the biological membrane formed on the surface after interaction of the micro-plastic and microorganisms in a real environment. The diversity and environmental adaptability of the natural microbial community significantly improve the ecological representativeness of the biological membrane, and a reliable model is provided for researching migration, aggregation and ecological risks of micro-plastics in a real environment.

The application discloses a kind of field scale soil pollutant migration simulation system and method, it is related to soil pollutant migration simulation technical field, including the following steps: based on target field construction with multiple grid units pollutant colloidal co-migration initial model, and initial parameter set is distributed to each grid unit;Soil in-situ monitoring data of target field are acquired, and preprocessing is carried out to obtain ion intensity data of soil solution and ion acid-base field data covering target field;Based on ion acid-base field data, the first risk probability of each grid unit in future period is calculated to occur colloidal release possibility.The application accurately locates the core high-risk area of pollutant colloidal co-migration in the whole field, determines the key range of data assimilation, effectively avoids the disadvantages of indiscriminate correction in the whole area, ensures that the limited observation resources and computing resources are focused on the high-weight area, and effectively improves the efficiency and accuracy of data assimilation.