CN116703241A - Cultivated land soil environment quality category demarcating method based on land mass evaluation unit - Google Patents
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Abstract
The invention discloses a farmland soil environmental quality category demarcation method based on a land mass evaluation unit, which particularly relates to the technical field of environmental quality demarcation, and comprises the following specific steps: s1, remote sampling of cultivated land soil, a group of acquisition personnel directly reach the position of the cultivated land soil, S2, wireless storage and transportation of real-time cultivated land data, S3, crop state acquisition, S4, wireless storage and transportation of real-time crop acquisition data, S5, real-time data curve comparison, modeling and evaluation of crop acquisition data and cultivated land soil acquisition data through a display screen comparison standard parameter S6 and crop acquisition index, S7, grading demarcation, S8 and result processing judgment. According to the invention, the pH value sensor is used for detecting the pH value in the soil, various parameters of crops are collected in real time, various comparison data can be updated in real time in the demarcation process, the timeliness of data collection and judgment is improved, and the demarcation accuracy is better.
Description
Technical Field
The invention relates to the technical field of environmental quality demarcation, in particular to a method for demarcating the soil environmental quality category of cultivated land based on a land mass evaluation unit.
Background
With the development of society, more and more fields are beginning to use data analysis and data processing techniques. In many fields where massive amounts of data are used, the data are processed so that a computer can divide the quality of the cultivated land soil environment according to the evaluation unit of the land area by processing the data.
In the prior published literature, patent publication No. CN111815184A discloses a classification method for soil environmental quality of cultivated land, and aims at a scientific and effective regional soil environmental quality evaluation method and a heavy metal interpolation method, complex relations between soil and agricultural products are comprehensively considered, so that collaborative risk evaluation of the soil and the agricultural products under multiple situations is realized, regional soil environmental quality evaluation precision is improved, and the classification method is still one of key research directions for the current classification of soil environmental quality of cultivated land; interpolation is carried out by adopting the same method based on the agricultural product environmental quality evaluation result, and the agricultural product is also divided into 3 grade areas; combining the grading results, introducing the agricultural product enrichment coefficient to obtain a classification result of the soil environment quality of the regional cultivated land under multiple situations, fully considering the complex nonlinear relationship between soil and agricultural products, developing the agricultural product cooperative research and judgment, and adopting a grading self-adaptive distance weighting method to realize the evaluation of the soil environment quality of the regional cultivated land from point to face, so that the result has more objectivity and authenticity; however, this method has the following drawbacks;
in the method for defining the soil environment quality category of the cultivated land, a large amount of personnel are required to collect various data of soil and agricultural products in the early stage in the process of evaluating and defining, and the heavy metal content and the pH value in the cultivated land soil are different under the influence of rainwater and weather, so that the collected data are difficult to evaluate and define in real time, the timeliness of evaluating and defining the collected data is poor, errors are easy to generate in defining, and the accuracy is poorer.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method for defining the quality category of the cultivated land soil environment based on a land mass evaluation unit.
In order to achieve the above purpose, the present invention provides the following technical solutions: a farmland soil environment quality category demarcation method based on a land mass evaluation unit comprises the following specific steps:
s1, remotely sampling farmland soil, wherein a group of acquisition personnel directly reach the farmland soil position, detecting the pH value in the soil by a pH value sensor, acquiring data of soil texture, organic matter content and heavy metal content for 5-10 times by a measuring instrument, measuring various contents of pollutants such as heavy metal, organic matters and nutrients in the soil by on-site analysis and test, and conveying the acquired data once every 5-10 min;
s2, carrying out wireless storage and transportation on real-time cultivated land data, storing the cultivated land data into a hard disk by using storage equipment every 5-10 min, realizing transportation of the data in the hard disk through a mobile communication network 5G, enabling a background receiving computer to directly store the data during transportation, and displaying acquired data on a display screen;
s3, crop state collection, wherein the other group of collection personnel directly collects parameters of the height, the stem diameter, the leaf area and the fruit size of crops and parameters of the yield and the weight of the crops in the cultivated soil by using a measuring tool, and stores all data collected by the crops into a hard disk, and the data of the crops can be conveyed once every 5-10 min;
s4, the real-time crop collection data are stored and conveyed in a wireless mode, the crop collection data are conveyed through a mobile communication network 5G, the crop collection data are conveyed once again within 5-10 min, various parameters of crops are collected in real time, the parameters are received and stored by a background receiving computer after being conveyed, and meanwhile the crop collection data are displayed on a display screen for display;
s5, comparing the real-time data curve, namely comparing standard parameters with data acquired by crops and data acquired by cultivated land soil through a display screen, filling the data into the position of the cultivated land soil, and comparing the difference between an actual measurement result and a standard value according to the environmental standard related to the cultivated land soil place to determine whether all acquired data of the cultivated land soil meet corresponding environmental quality standards or not;
s6, modeling and evaluating crop harvest index, comprehensively considering test results of various indexes of soil by utilizing a multi-index evaluation system, establishing an evaluation model by using parameters of pH value, soil texture, organic matter content, heavy metal content, final harvest height, stem diameter, leaf area and fruit size of crops, and comparing and evaluating data acquired by crops in the time period with data acquired by cultivated soil according to the evaluation model;
s7, grading and demarcating, namely, according to the result of a soil quality index evaluation model, comparing the environmental quality of the cultivated land soil in real time until the cultivated land soil is classified into different grades, wherein the grades are usually classified into excellent grade, medium grade, worse grade and inferior grade, if the number of the grade values of the real-time comparison is the largest, the cultivated land is regarded as the grade, 3-5 expert is required to determine whether the divided section is a normal section in 5-10S, and signature is carried out to determine evaluation data after the completion of the confirmation;
s8, result processing judgment, namely judging and classifying the environmental quality of the cultivated land soil based on the defined grades, and formulating management measures and protection measures of various grades of the corresponding fine land, the middle land, the poor land and the inferior land;
preferably, the pH sensor in S1 is used by opening the pH sensor, inserting the pH sensor into the soil, establishing a bracket above the pH sensor to fix the pH sensor in the soil, visually checking whether the electrode portion detected by the pH sensor is completely immersed in the soil, determining whether the electrode portion is completely immersed in the soil, waiting for 5-10 min after the electrode portion is completely immersed in the soil, measuring the electrode portion until the electrode portion is stable, recording the readings, and recording the pH sensor data, wherein the heavy metal type of the soil in S1 is lead, cadmium, mercury, chromium, nickel, copper and zinc, and the heavy metal determination method mainly adopts an atomic absorption spectrometry, wherein the atomic absorption spectrometry quantitatively analyzes the content of the heavy metal by measuring the absorption spectrum of specific heavy metal elements in the substance, or an inductively coupled plasma emission spectrometry, and the method utilizes an inductively coupled plasma emission spectrometer to measure characteristic spectral lines of various metal elements in the sample to perform quantitative analysis.
Preferably, in the S2, the mobile communication network 5G divides the coverage area of the 5G network into smaller soil areas, each soil area is equipped with more base stations and antennas, so as to reduce interference between users, and the 5G network supports a carrier aggregation technology of multiple frequency bands, and simultaneously uses signals of the multiple frequency bands to perform data transmission, so that the 5G network speed is stabilized to be 10-15Gbps.
Preferably, the collection sequence of the parameters of the height, the stem diameter, the leaf area and the fruit size of the crops in the step S3 is sequentially arranged from front to back for collection, the collection times are 2-5 times each time, and the collection interval time is 1-3 min each time.
Preferably, in S4, after receiving the data received by the computer, the background stores the data as a CSV file, the computer may download the file from the background server through the file transfer protocol FTP, SFTP, SCP to receive the data, and each time the received data may be automatically backed up, 2-3 copies of the data are stored in the backup folder, and the file names are backup one, backup two and backup three.
Preferably, in the step S5, the curve comparison method adopts a line graph comparison, a line graph is used to intuitively display the variation trend among a plurality of data curves, different data curves are respectively drawn on the same coordinate system, the difference and the association degree between the curves can be obtained by comparing the trend, the fluctuation condition and the trend change of the curves, or a cake graph comparison is adopted, the cake graph is used for comparing the occupation ratio condition of different data curves in the whole, the numerical value of each data curve is converted into a corresponding sector angle, the proportional relation of each data curve can be clearly seen by comparing the size and the color of the sector, the environmental quality standard in the step S5 adopts the reference value in the pollution control standard in agricultural sludge as the standard basis, and the reference needs to be compared with the corresponding reference of each heavy metal content for 5-10 times.
Preferably, the method for evaluating the model component in S6 mainly performs comprehensive calculation by setting weights or using a mathematical model, adopts a analytic hierarchy process and a better-worse solution distance process for comprehensive evaluation, gives out relative ordering or scores, sequentially arranges the scores from top to bottom according to the scores, and determines the grade of the cultivated land soil according to the final scores.
The invention has the technical effects and advantages that:
1. the invention detects the pH value in the soil by the pH value sensor, acquires data of soil texture, organic matter content and heavy metal content by the measuring instrument, realizes the transportation by the mobile communication network 5G, directly stores the data by a background receiving computer during the transportation, simultaneously acquires parameters of the height, stem diameter, leaf area and fruit size of crops and parameters of the yield and weight of the crops by the measuring instrument directly in the cultivated soil by the other group of acquisition personnel, acquires all parameters of the crops in real time, receives and stores all comparison data by the background receiving computer after the parameter transportation, updates all comparison data in real time in the demarcation process, improves the timeliness of data acquisition and judgment, and has better demarcation accuracy;
2. according to the invention, the standard parameters are compared between the data acquired by crops and the data acquired by cultivated land soil through the display screen, the position of the cultivated land soil is filled, the difference between the actual measurement result and the standard value is compared through the curve according to the environmental standard related to the cultivated land soil, and each parameter is compared rapidly through the curve, so that the display of the judgment data is more comprehensive and the definition accuracy is better;
3. according to the invention, the test results of various indexes of the soil are comprehensively considered by utilizing a multi-index evaluation system, the pH value, the soil texture, the organic matter content, the heavy metal content, and the final crop harvesting height, stem diameter, leaf area and fruit size parameters are used for establishing an evaluation model, and the data collected by the crops in the time period are compared with the data collected by the soil in the cultivated land, so that the data in each time period can be compared in real time, and the defining timeliness is better;
in conclusion, through the mutual influence of the functions, firstly, various parameters of crops are collected in real time, the parameters are received and stored by a background receiving computer after being conveyed, then, through the environmental standard related to the cultivated land soil place, the difference between the actual measurement result and the standard value is compared by the curve, finally, the data collected by the crops in the time period and the data collected by the cultivated land soil are compared and evaluated, and in addition, the cultivated land soil can be defined in real time, the various defined data are updated and compared in time, and the definition accuracy is better.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following two sets of examples are obtained by a method for defining the soil environment quality category of cultivated land based on a land mass evaluation unit as shown in figure 1.
Example 1:
a farmland soil environment quality category demarcation method based on a land mass evaluation unit comprises the following specific steps:
s1, remotely sampling farmland soil, wherein a group of acquisition personnel directly reach the farmland soil position, a pH value sensor is used for detecting the pH value in the soil, the pH value sensor is required to be opened when in use, the pH sensor is inserted into the soil, a bracket is established above the pH sensor and fixed in the soil, whether an electrode part detected by the pH value sensor is completely immersed in the soil is visually checked, the soil is completely immersed for 5 minutes after the electrode part is determined to be completely immersed in the soil, the measurement is stable, the reading is recorded, pH value sensor data are recorded, the soil texture, the organic matter content and the heavy metal content are subjected to data acquisition for 5 times through a measuring instrument, the heavy metal types in the soil are lead, cadmium, mercury, chromium, nickel, copper and zinc, and the heavy metal measuring method mainly adopts an atomic absorption spectrometry, the content of specific heavy metal elements in the soil is quantitatively analyzed through an absorption spectrum of measuring substance, or an inductive coupling plasma emission spectrometry, the contents of pollutants such as heavy metals, organic matters and the like in the soil are measured through on-site analysis and testing, and the acquired data are conveyed once every 5 minutes;
s2, carrying out wireless storage and transportation on real-time cultivated land data, storing the data in a hard disk every 5min by using storage equipment, realizing transportation on the data in the hard disk through a mobile communication network 5G, dividing a 5G network coverage area into smaller soil areas by the mobile communication network 5G, wherein each soil area is provided with more base stations and antennas, reducing interference among users, supporting a carrier aggregation technology of a plurality of frequency bands by the 5G network, simultaneously carrying out data transmission by using signals of the plurality of frequency bands, stabilizing the 5G network speed to be 10Gbps, directly storing the data by a background receiving computer during transportation, and displaying acquired data on a display screen;
s3, crop state collection, namely collecting parameters of the height, the stem diameter, the leaf area and the fruit size of crops, and collecting parameters of the yield and the weight of the crops in the cultivated soil by using a measuring tool by the other group of collection personnel, wherein the collection sequences of the parameters of the height, the stem diameter, the leaf area and the fruit size of the crops are sequentially arranged and collected from front to back, the collection times are 2 times each time, the collection interval time is 1min, all data collected by the crops are stored in a hard disk, and the data of the crops can be transmitted once every 5 min;
s4, carrying out wireless storage and transmission on the real-time crop acquisition data, carrying out transmission on the crop acquisition data through a mobile communication network 5G, carrying out transmission on the crop acquisition data once again within 5min, collecting various parameters of the crops in real time, receiving and storing the parameters by a background receiving computer after the parameter transmission, storing the data as a CSV file after the background receiving computer receives the data, downloading files from a background server by a file transmission protocol FTP, SFTP, SCP to receive the data by the computer, automatically backing up the data received each time, storing 3 copies of the backup in a standby folder, and displaying the file names of the backup I, the backup II and the backup III on a display screen;
s5, comparing real-time data curves, namely comparing standard parameters with data acquired by crops and data acquired by cultivated land soil through a display screen, filling the data acquired by crops and the data acquired by cultivated land soil into the position of the cultivated land soil, comparing differences between measured results and standard values according to environmental standards related to the cultivated land soil places by curves, comparing the curves by using a line graph, intuitively displaying variation trends among a plurality of data curves by using the line graph, respectively drawing different data curves on the same coordinate system, and comparing trends, fluctuation situations and trend changes of the curves to obtain differences and correlation between the curves so as to determine whether each acquired data of the cultivated land soil accords with corresponding environmental quality standards or not, wherein the environmental quality standards adopt reference values in an agricultural sludge pollutant control standard as standard, and each heavy metal content is required to be compared for reference 5 times during reference;
s6, modeling and evaluating crop harvest index, comprehensively considering test results of various indexes of soil by utilizing a multi-index evaluation system, establishing an evaluation model by using parameters of pH value, soil texture, organic matter content, heavy metal content, final harvest height, stem diameter, leaf area and fruit size of crops, comprehensively calculating by mainly setting weights or using a mathematical model, using a analytic hierarchy process and a good and bad solution distance method for comprehensive evaluation, providing relative ordering or scores, sequentially arranging from top to bottom according to the scores, determining the grade of cultivated soil according to the final scores, and comparing and evaluating the data acquired by the crops in the time period according to the evaluation model with the data acquired by the cultivated soil;
s7, grading and demarcating, namely, according to the result of a soil quality index evaluation model, comparing the environmental quality of the cultivated land soil in real time until the cultivated land soil is classified into different grades, namely, excellent land, medium land, poor land and inferior land grades after crop planting is finished, if the number of times of appearance of the grade numerical value of the real-time comparison is the largest, the cultivated land is regarded as the grade, 3 experts are required to determine whether a division interval is a normal interval in 5S, and signature is carried out to determine evaluation data after the completion of confirmation;
s8, result processing and judging, namely judging and classifying the environmental quality of the cultivated land soil based on the defined grades, and formulating management measures and protection measures of various grades of the corresponding fine land, the middle land, the poor land and the inferior land.
Example 2:
a farmland soil environment quality category demarcation method based on a land mass evaluation unit comprises the following specific steps:
s1, remotely sampling farmland soil, wherein a group of acquisition personnel directly reach the farmland soil position, a pH value sensor is used for detecting the pH value in the soil, the pH value sensor is required to be opened when in use, the pH sensor is inserted into the soil, a bracket is established above the pH sensor and fixed in the soil, whether an electrode part detected by the pH value sensor is completely immersed in the soil is visually checked, the soil is completely immersed for 10 minutes after the electrode part is determined to be completely immersed in the soil, the measurement is stable, the reading is recorded, pH value sensor data are recorded, the soil texture, the organic matter content and the heavy metal content are subjected to data acquisition for 10 times through a measuring instrument, the heavy metal types in the soil are lead, cadmium, mercury, chromium, nickel, copper and zinc, and the heavy metal measuring method mainly adopts an atomic absorption spectrometry, the content of specific heavy metal elements in the soil is quantitatively analyzed through an atomic absorption spectrometry, or an inductive coupling ion body emission spectrometry, the contents of pollutants such as heavy metals, organic matters and the nutrients in the soil are measured through on-site analysis and testing, and the acquired data are conveyed once every 10 minutes;
s2, carrying out wireless storage and transportation on real-time cultivated land data, storing the data in a hard disk every 10 minutes by using storage equipment, realizing transportation on the data in the hard disk through a mobile communication network 5G, dividing a 5G network coverage area into smaller soil areas by the mobile communication network 5G, wherein each soil area is provided with more base stations and antennas, reducing interference among users, supporting a carrier aggregation technology of a plurality of frequency bands by the 5G network, simultaneously carrying out data transmission by using signals of the plurality of frequency bands, stabilizing the 5G network speed to be 15Gbps, directly storing the data by a background receiving computer during transportation, and displaying acquired data on a display screen;
s3, crop state collection, namely collecting parameters of the height, the stem diameter, the leaf area and the fruit size of crops, and collecting parameters of the yield and the weight of the crops in the cultivated soil by using a measuring tool by the other group of collection personnel, wherein the collection sequences of the parameters of the height, the stem diameter, the leaf area and the fruit size of the crops are sequentially arranged from front to back, the collection times are 5 times each time, the collection interval time is 3 minutes each time, all data collected by the crops are stored in a hard disk, and the data of the crops can be transmitted once every 10 minutes;
s4, carrying out wireless storage and transmission on the real-time crop acquisition data, carrying out transmission on the crop acquisition data through a mobile communication network 5G, carrying out transmission on the crop acquisition data once again within 10min, collecting various parameters of the crops in real time, receiving and storing the parameters by a background receiving computer after the parameter transmission, storing the data as a CSV file after the background receiving computer receives the data, downloading files from a background server by a file transmission protocol FTP, SFTP, SCP to receive the data by the computer, automatically backing up the data received each time, storing 3 copies of the backup in a standby folder, and displaying the file names of the backup I, the backup II and the backup III on a display screen;
s5, comparing real-time data curves, namely comparing standard parameters with data acquired by crops and data acquired by cultivated land soil through a display screen, filling the data acquired by crops and the data acquired by cultivated land soil into the position of the cultivated land soil, comparing differences between measured results and standard values according to environmental standards related to the cultivated land soil places by curves, comparing the curves by using a line graph, intuitively displaying variation trends among a plurality of data curves by using the line graph, respectively drawing different data curves on the same coordinate system, and comparing trends, fluctuation situations and trend changes of the curves to obtain differences and correlation between the curves so as to determine whether each acquired data of the cultivated land soil accords with corresponding environmental quality standards or not, wherein the environmental quality standards adopt reference values in an agricultural sludge pollutant control standard as standard basis, and each heavy metal content is required to be compared for reference 10 times during reference;
s6, modeling and evaluating crop harvest index, comprehensively considering test results of various indexes of soil by utilizing a multi-index evaluation system, establishing an evaluation model by using parameters of pH value, soil texture, organic matter content, heavy metal content, final harvest height, stem diameter, leaf area and fruit size of crops, comprehensively calculating by mainly setting weights or using a mathematical model, using a analytic hierarchy process and a good and bad solution distance method for comprehensive evaluation, providing relative ordering or scores, sequentially arranging from top to bottom according to the scores, determining the grade of cultivated soil according to the final scores, and comparing and evaluating the data acquired by the crops in the time period according to the evaluation model with the data acquired by the cultivated soil;
s7, grading and demarcating, namely, according to the result of a soil quality index evaluation model, comparing the environmental quality of the cultivated land soil in real time until the cultivated land soil is classified into different grades, namely, good land, medium land, poor land and bad land grades after crop planting is finished, if the number of times of appearance of the grade numerical value of the real-time comparison is the largest, the cultivated land is regarded as the grade, 5 experts are required to determine whether a division interval is a normal interval in 10S, and signature is carried out to determine evaluation data after the completion of confirmation;
s8, result processing and judging, namely judging and classifying the environmental quality of the cultivated land soil based on the defined grades, and formulating management measures and protection measures of various grades of the corresponding fine land, the middle land, the poor land and the inferior land.
After the test of the three groups of embodiments, the comparison data of each test parameter obtained in the test process are shown in the following table:
the table data can be summarized to obtain better soil data time rate, crop data time rate, judging accuracy rate and data visual rate in the embodiment 2, so that the embodiment 2 can delineate the farmland soil in real time in the operation process, and each delineated data can be updated and compared in time, so that the definition accuracy is better.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. A farmland soil environment quality category demarcating method based on a land mass evaluation unit is characterized in that: the method comprises the following specific steps:
s1, remotely sampling farmland soil, wherein a group of acquisition personnel directly reach the farmland soil position, detecting the pH value in the soil by a pH value sensor, acquiring data of soil texture, organic matter content and heavy metal content for 5-10 times by a measuring instrument, measuring various contents of pollutants such as heavy metal, organic matters and nutrients in the soil by on-site analysis and test, and conveying the acquired data once every 5-10 min;
s2, carrying out wireless storage and transportation on real-time cultivated land data, storing the cultivated land data into a hard disk by using storage equipment every 5-10 min, realizing transportation of the data in the hard disk through a mobile communication network 5G, enabling a background receiving computer to directly store the data during transportation, and displaying acquired data on a display screen;
s3, crop state collection, wherein the other group of collection personnel directly collects parameters of the height, the stem diameter, the leaf area and the fruit size of crops and parameters of the yield and the weight of the crops in the cultivated soil by using a measuring tool, and stores all data collected by the crops into a hard disk, and the data of the crops can be conveyed once every 5-10 min;
s4, the real-time crop collection data are stored and conveyed in a wireless mode, the crop collection data are conveyed through a mobile communication network 5G, the crop collection data are conveyed once again within 5-10 min, various parameters of crops are collected in real time, the parameters are received and stored by a background receiving computer after being conveyed, and meanwhile the crop collection data are displayed on a display screen for display;
s5, comparing the real-time data curve, namely comparing standard parameters with data acquired by crops and data acquired by cultivated land soil through a display screen, filling the data into the position of the cultivated land soil, and comparing the difference between an actual measurement result and a standard value according to the environmental standard related to the cultivated land soil place to determine whether all acquired data of the cultivated land soil meet corresponding environmental quality standards or not;
s6, modeling and evaluating crop harvest index, comprehensively considering test results of various indexes of soil by utilizing a multi-index evaluation system, establishing an evaluation model by using parameters of pH value, soil texture, organic matter content, heavy metal content, final harvest height, stem diameter, leaf area and fruit size of crops, and comparing and evaluating data acquired by crops in the time period with data acquired by cultivated soil according to the evaluation model;
s7, grading and demarcating, namely, according to the result of a soil quality index evaluation model, comparing the environmental quality of the cultivated land soil in real time until the cultivated land soil is classified into different grades, wherein the grades are usually classified into excellent grade, medium grade, worse grade and inferior grade, if the number of the grade values of the real-time comparison is the largest, the cultivated land is regarded as the grade, 3-5 expert is required to determine whether the divided section is a normal section in 5-10S, and signature is carried out to determine evaluation data after the completion of the confirmation;
s8, result processing and judging, namely judging and classifying the environmental quality of the cultivated land soil based on the defined grades, and formulating management measures and protection measures of various grades of the corresponding fine land, the middle land, the poor land and the inferior land.
2. The method for defining the quality category of the cultivated land soil environment based on the land parcel evaluation unit according to claim 1, wherein the method comprises the following steps: when the pH value sensor in the S1 is used, the pH value sensor is required to be opened, the pH value sensor is inserted into the soil, a bracket is established above the pH value sensor to be fixed in the soil, whether the electrode part detected by the pH value sensor is completely immersed in the soil is checked visually, the condition that the electrode part is completely immersed in the soil is determined, and then the electrode part is waited for 5-10 min until the measurement is stable, the reading is recorded, and the data of the pH value sensor is recorded.
3. The method for defining the quality category of the cultivated land soil environment based on the land parcel evaluation unit according to claim 1, wherein the method comprises the following steps: the soil heavy metal category in the S1 is lead, cadmium, mercury, chromium, nickel, copper and zinc, and the heavy metal determination method mainly adopts an atomic absorption spectrometry, wherein the atomic absorption spectrometry is used for quantitatively analyzing the content of specific heavy metal elements in a substance by measuring the absorption spectrum of the specific heavy metal elements, or an inductively coupled plasma emission spectrometry is used for quantitatively analyzing the characteristic spectral lines of various metal elements in a sample by using an inductively coupled plasma emission spectrometer.
4. The method for defining the quality category of the cultivated land soil environment based on the land parcel evaluation unit according to claim 1, wherein the method comprises the following steps: in the step S2, the mobile communication network 5G divides the coverage area of the 5G network into smaller soil areas, each soil area is equipped with more base stations and antennas, interference between users is reduced, the 5G network supports carrier aggregation technology of multiple frequency bands, and simultaneously uses signals of multiple frequency bands to perform data transmission, so that the 5G network speed is stabilized to be 10-15Gbps.
5. The method for defining the quality category of the cultivated land soil environment based on the land parcel evaluation unit according to claim 1, wherein the method comprises the following steps: and in the step S3, the parameters of the height, the stem diameter, the leaf area and the fruit size of the crops are sequentially collected in sequence from front to back, the collection times are 2-5 times each time, and the collection interval time is 1-3 min each time.
6. The method for defining the quality category of the cultivated land soil environment based on the land parcel evaluation unit according to claim 1, wherein the method comprises the following steps: and in the step S4, after receiving data received by the computer, the background stores the data as a CSV file, the computer can download files from a background server through a file transfer protocol FTP, SFTP, SCP to receive the data, the data received each time can be automatically backed up, 2-3 copies of the data are stored in a standby folder, and the file names are backup one, backup two and backup three.
7. The method for defining the quality category of the cultivated land soil environment based on the land parcel evaluation unit according to claim 1, wherein the method comprises the following steps: the curve comparison method in S5 adopts a line graph comparison, a line graph is used for intuitively displaying the variation trend among a plurality of data curves, different data curves are respectively drawn on the same coordinate system, the difference and the association degree between the curves can be obtained by comparing the trend, the fluctuation condition and the trend change of the curves, or a cake graph is used for comparing the ratio condition of different data curves in the whole, the numerical value of each data curve is converted into a corresponding sector angle, and the proportional relation of each data curve can be clearly seen by comparing the size and the color of the sectors.
8. The method for defining the quality category of the cultivated land soil environment based on the land parcel evaluation unit according to claim 1, wherein the method comprises the following steps: the environmental quality standard in S5 adopts the reference value in the agricultural sludge pollutant control standard as the standard basis, and the reference is required to be compared with the corresponding reference of each heavy metal content for 5-10 times.
9. The method for defining the quality category of the cultivated land soil environment based on the land parcel evaluation unit according to claim 1, wherein the method comprises the following steps: the method for evaluating the model components in the S6 is mainly characterized in that the method is mainly used for comprehensively calculating by setting weights or using a mathematical model, a analytic hierarchy process and a good and bad solution distance method are adopted for comprehensively evaluating, relative ordering or scores are given, the relative ordering or scores are sequentially arranged from top to bottom according to the scores, and the grade of the cultivated land soil is determined according to the final scores.
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