Inland saline-alkali land precise improvement method based on geodetic conductivity meter
A technology of earth conductivity and conductivity meter, which is applied in the field of precise improvement of inland saline-alkali land based on earth conductivity meter (EM38-MK2), to achieve the effect of high improvement benefit, good practical application and promotion value, and suppressing spatial variation
Active Publication Date: 2020-03-27
INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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Problems solved by technology
[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 implementation site is selected at the base of Maozao Village, Huairen County, Shanxi Province, and the saline-alkali type is soda saline soil; in 2016, the precise 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 topographic survey and positioning, make large-scale topographic maps, and establish vectorized electronic coordinate maps.
[0032] (2), grid setting
[0033] Set up improved grid cells in the improved plot, and determine the location and number of sample points for measurement. The size of the grid is determined according to the size of the plot and the variation characteristics of the distribution of sa...
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The invention discloses an inland saline-alkali land precise improvement method based on an earth conductivity meter. The method comprises: (1) performing positioning with GPS in a selected saline-alkali land area, drawing a vectorization map of the area, designing a grid unit according to an area of the saline-alkali land, and determining determination sample point positions and the number of sample points; (2) using the earth conductivity meter to determine sample point soil conductivity on site; (3) using the determined values to draw a spatial distribution map of the conductivity in the area to determine the saline-alkali degree distribution; (4) formulating recommended index values of a chemical modifier for saline-alkali land improvement based on the determined data; and (5) performing precise improvement of the saline-alkali land based on the distribution map and recommended index values. The method abandons the complicated procedure that the combination of manual field samplingand indoor analysis testing are needed to define the saline-alkali degree in the past, is an precise method with non-field disturbance and quick and easy determination of soil apparent conductivity for saline-alkali land improvement, is low in cost and efficient, and is very suitable for applications of saline-alkali land improvement enterprises and cooperatives.
Description
technical field [0001] The invention belongs to the technical field of saline-alkali land improvement, and specifically relates to a method for precise improvement of inland saline-alkali land based on an earth conductivity meter (EM38-MK2). Background technique [0002] Inland saline-alkali land is the main saline-alkali area in my country, including the northwest, northeast and the middle and upper reaches of the Yellow River, accounting for about 69% of the total saline-alkali area in the country, and is an important reserve cultivated land resource in my country. The rapid improvement of saline-alkali wasteland into cultivated land is of great significance to ensure my country's food security, increase the area of cultivated land, and improve the agricultural ecological environment. [0003] However, the degree of salinization of saline-alkali soil is different, the types are complex and diverse, and the differences are often large in a small range. The unevenness of s...
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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