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Method for measuring porosity of soil

A porosity and soil technology, applied in the field of agricultural engineering, can solve the problems of long measurement period and destroy the original state of the soil, and achieve the effects of short measurement period, reduction of measurement errors and simple operation.

Inactive Publication Date: 2018-02-27
内蒙古农业大学职业技术学院
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Problems solved by technology

[0009] The purpose of the present invention is to provide a method for measuring soil porosity, so as to solve the existing problems of destroying the original state of soil and long measurement period in the existing method for measuring soil porosity, improve the accuracy of measurement results, and meet the requirements of engineering. Detection requirements for before and after changes in soil porosity

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  • Method for measuring porosity of soil
  • Method for measuring porosity of soil
  • Method for measuring porosity of soil

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Embodiment Construction

[0020] The following are preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereby.

[0021] As shown in the figure, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiment.

[0022] Because the traditional method destroys the original state of the soil when measuring the porosity of the soil, it affects the measurement accuracy. The invention is suitable for measuring the variation of soil porosity before and after soil deep loosening; including.

[0023] S 1 , take soil samples, generally at least 400mm × 400mm soil samples.

[0024] S 2 , using the Wenner method to measure the soil resistivity, set the power supply AB, and select two points M a...

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Abstract

The invention discloses a method for measuring porosity of soil, which comprises the following steps: (1) selecting different sampling points on a soil surface; (2) building a model of soil porosity and electrical resistivity; (3) measuring different saturability and porosity of current soil for carrying out electrical resistivity tests, and calibrating parameters of the model of soil porosity andelectrical resistivity; (4) measuring the soil electrical resistivity, and obtaining the porosity of current soil through the model of soil porosity and electrical resistivity. Compared with samplingtesting, the method ensures that soil is not destroyed to the utmost extent, and ensures the accuracy of porosity measurement. The method can avoid destroying the soil original structure in a sampling measuring process, thereby retaining the original density, the water content and other elements of soil to the utmost extent, and fundamentally reducing measurement errors; moreover, the method is simple to operate and short in measurement period, thereby meeting detection requirements on changed soil porosity in engineering.

Description

technical field [0001] The invention relates to the field of agricultural engineering, more specifically, to the field of a method for measuring soil porosity. Background technique [0002] Soil porosity refers to the ratio of the part of the soil other than the space occupied by solids in the total. The size of the porosity is related to the soil type, texture, and organic matter content, and has an important impact on soil water retention, nutrient conversion, and plant root growth. , studies have shown that deep loosening the soil, breaking the soil plow bottom layer, loosening the soil at the plow bottom layer, adjusting the soil three-phase ratio, high soil porosity and water permeability, air permeability, less water and soil erosion, is conducive to the protection of the agricultural ecological environment, and is beneficial to the improvement of crops Yield, especially deep root crops have a very significant effect. [0003] There are three traditional methods for m...

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/088
Inventor 高伟高磊岳进宝王利鹤牛文学蔺建波刘志强赵永来
Owner 内蒙古农业大学职业技术学院
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