A method for precise improvement of inland saline-alkali land based on earth conductivity meter
A technology of earth conductivity and conductivity meter, which is applied in the fields of soil preparation, agriculture, application, etc., to achieve the effect of high improvement benefit, stable spatial variation, good practical application and promotion value
Active Publication Date: 2022-07-05
INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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[0005] These existing technologies do not involve how to use the measured values of the earth conductivity meter to establish the soil salinization degree index, establish a recommendation system for the dosage of improvers according to different salinization degrees, and then carry out precise improvement at fixed points
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[0028] Specific embodiments of the present invention will be described in detail below.
[0029] The site for this implementation is Maozao Village Base, Huairen County, Shanxi Province, and the saline-alkali type is soda salinized soil. In 2016, the accurate improvement method of inland saline-alkali land based on the earth conductivity meter was applied to the test site, and the following steps were followed:
[0030] (1), site selection and plot measurement
[0031] In mid-March of that year, the plot to be improved was selected, with an area of 2ha. Use GPS for topographical measurement and positioning, make large-scale topographic maps, and establish vectorized electronic coordinate maps.
[0032] (2), grid settings
[0033] Set up improved grid cells in the improved plot to determine the location and number of sample points to be measured. The size of the grid is determined according to the size of the plot and the variation characteristics of salinity distribution....
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The invention discloses an accurate improvement method for inland saline-alkali land based on a conductivity meter, comprising: (1) positioning with GPS within the selected saline-alkali land, drawing a regional vector map, designing grid cells according to the area of the saline-alkali land, and determining Measure the location and number of sample points; (2) Use the earth conductivity meter to measure the soil conductivity of the sample point on site; (3) Use the measured values to draw a spatial distribution map of electrical conductivity in the area to clarify the distribution of salinity degree; (4) According to the measurement Based on the data, formulate the recommended index values of chemical modifiers for improving saline-alkali land; (5) Carry out precise improvement of saline-alkali land based on the distribution map and recommended indexes. The method abandons the previous cumbersome procedure of manual sampling in the field combined with indoor analysis and testing to define the degree of salinity. It is used in saline-alkali land improvement enterprises and cooperatives.
Description
technical field [0001] The invention belongs to the technical field of saline-alkali land improvement, in particular to a method for accurately improving inland saline-alkali land based on an earth conductivity meter (EM38-MK2). Background technique [0002] The inland saline-alkali land is the main saline-alkali area in my country, including the northwest, northeast, and middle and upper reaches of the Yellow River, accounting for about 69% of the country's total saline-alkali land. It is an important reserve arable land resource in my country. The rapid improvement of saline-alkali wasteland into arable land is of great significance for ensuring my country's food security, increasing the area of arable land, and improving the agricultural ecological environment. [0003] However, the degree of salinization of saline-alkali soil is different, the types are complex and diverse, and there are often large differences in a small range. This non-uniformity of soil salinity con...
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IPC IPC(8): A01B79/00A01B79/02
CPCA01B79/005A01B79/02
Inventor 杨治平张强王永亮郭彩霞黄高鉴郭军玲
Owner INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI