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In situ measuring system and measuring method for conductivity of soil moisture

A technique for in situ measurement, conductivity, applied in the field of soil physics

Inactive Publication Date: 2012-09-26
张振华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention mainly solves the existing determination and During the process, the soil core was disturbed and the measurement results were quite different from the actual situation in the field.

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  • In situ measuring system and measuring method for conductivity of soil moisture
  • In situ measuring system and measuring method for conductivity of soil moisture

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Example 1, see figure 1 , use an earth drill to drill a borehole with a depth of L at the position to be measured, L is 10-20 cm, the diameter of the borehole is consistent with the diameter D of the measuring cylinder 2, and the measuring cylinder 2 is driven into the borehole, for Keep the undisturbed soil undisturbed, and try to keep the top of the measurement cylinder 2 level during the process of driving in. The diameter of the measurement cylinder 2 is 5-20cm, and the height is 30-60cm. The measurement cylinder 2 is made of stainless steel. The cylinder with an open end can also be made of other hard materials; insert the rubber stopper 5 into the upper end of the measuring cylinder 2 to ensure that the connection between the two is tight and air-tight, and pass a branch of the tee 4 through the rubber stopper 5 and measure The cylinder 2 is connected, and the air supply source 1 is connected in series with the other branch pipe of the tee 4 through the connectin...

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Abstract

The invention discloses an in situ measuring system and a measuring method for conductivity of soil moisture, wherein the in situ measuring system comprises an air feeding source (1), a measuring cylinder (2), a pressure meter (3), a tee (4), a rubber plug (5) and a coupling hose (6). The invention is characterized in that: the rubber plug (5) can connect with the measuring cylinder (2) closely; a branch pipe of the tee (4) is connected with the rubber plug (5); the air feeding source (1) is sealed and connected tandem with the other branch pipe of the tee (4) by the coupling hose (6); the pressure meter (3) is sealed and connected with a third branch pipe of the tee (4) by the coupling hose (6). The system can achieve day-night observation of air permeability and saturated hydraulic conductivity of soils in situ and reduce disturbance to the soil. The system enables measuring results to reflect actual conditions more accurately, ensures measuring soils of air permeability and saturated hydraulic conductivity of soils consistent and lays the foundation of establishing their accurate quantification relation.

Description

Technical field: [0001] The invention relates to the technical field of soil physics, in particular to an in-situ measurement system and method for soil moisture conductivity. Background technique: [0002] soil saturated hydraulic conductivity and soil air permeability It is a key parameter to characterize the migration characteristics of soil water and air. and In addition to being closely related to the geometric characteristics, connectivity, and shrinkage of soil pores, it is also affected by factors such as soil structure, texture, and land use methods. The water and air content and their migration characteristics in the soil affect soil fertility and play a decisive role in plant growth. Studying the migration law of water and air in soil and determining its related parameters are the basis for rational irrigation, improving the aeration environment of plant soil root zone, and improving agricultural production. At the same time, it is also very important for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/00
Inventor 张振华潘英华牛文全张富仓
Owner 张振华
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