Soil water storage capacity measuring instrument

Abstract

The invention relates to a soil water storage capacity measuring instrument. The instrument is vertically inserted into the soil and comprises a rod-shaped external frame. One side of the external frame is provided with a medium tank that penetrates the upper end and lower end of the external frame. The medium tank comprises two parallel and opposite tank walls. Multiple electrode grooves are evenly arranged on two tank walls at equal intervals along the vertical direction. Positive electrode plates are embedded into one row of electrode grooves, and negative electrode plates are embedded into the other row of electrode grooves, the positive electrode plates are parallel to the negative electrode plates, the positive electrode plates and negative electrode plates form a capacitance space; and the electrode plates are connected to a central processing module. The soil water storage capacity measuring instrument can work normally even if the instrument is completely submerged and is capable of monitoring the water storage capacity of soil in a depth less than 2 meters.

Description

technical field [0001] The invention relates to a water storage capacity measuring instrument, in particular to a soil water storage capacity measuring instrument which can be used in an over-humid surface environment. Background technique [0002] Soil water is one of the important components of the earth's water body. Soil can store natural precipitation to meet the water demand of crop growth, which is very similar to the water storage function of surface reservoirs. Soil water storage capacity is an important evaluation index of soil water storage capacity and ecosystem environmental status. [0003] In the over-wet surface environment, such as various types of wetlands, temporary flooding areas, and lakes and rivers with significant water level fluctuations, part of the water in the surface environment is stored in the soil, and part of it is stored on the surface, and it is constantly changing. Carry out space-time interactive transformation. The fluctuation monitori...

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Problems solved by technology

[0004] Traditional soil water storage measurement equipment generally uses a probe-type sensor structure. The probe-type structure generally sets a probe at a distance of tens of centimeters. The measurement result can only represent the soil moisture content of a single point, and cannot represent dozens of water volume in centimeters of soil layer

[0005] At the same time, due to the influence of water in the over-humid surface environment, etc., when the instrument is completely submerged, the instrument is easily damaged and affects the accuracy of the measurement results.

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