Soil water potential distribution detecting device and detecting method

Abstract

The present invention relates to the technical field of soil water potential detecting equipment, and discloses a soil water potential distribution detecting device and detecting method. The soil water potential distribution detecting device comprises a dielectric constant sensor, and further comprises a measuring tube, a plurality of porous material layers and a water-repellent layer embedded between each two adjacent porous material layers. The plurality of porous material layers are sequentially, coaxially and fixedly connected with the outer wall of the measuring tube along the longitudinal direction of the measuring tube; and the dielectric constant sensor is slidably arranged inside the measuring tube along the longitudinal direction of the measuring tube. According to the detectingdevice provided by the present invention, the single-point measurement is expanded to the measurement within a certain area, and based on ensuring accuracy and a response to the soil change, a lot ofmanpower and material costs are saved; and the detecting device has the advantages of simple use, accurate measurement, high sensitivity and capability of continuous detection.

Description

technical field [0001] The invention relates to the technical field of soil water potential detection equipment, in particular to a soil water potential distribution detection device and a detection method. Background technique [0002] The shortage of water resources is an important problem faced by countries all over the world. Factors such as population growth and climate change have exacerbated the severity of this problem. Agriculture accounts for about 70% of the world's total freshwater use. If we can reasonably control agricultural irrigation water and improve irrigation efficiency, we can greatly solve the problem of excessive agricultural water use. At the same time, reasonable and accurate irrigation can also prevent crops from drought caused by untimely irrigation, or root zone rot caused by over-irrigation, so as to obtain better yields. [0003] Soil water potential is an important parameter to measure the water content in the soil. It mainly describes the ab...

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Problems solved by technology

[0005] The embodiment of the present invention provides a soil water potential distribution detection device and detection method to solve the problem that the existing soil water potential detection can only measure at a single point and cannot achieve continuous measurement, so as to achieve the purpose of accurately measuring the soil water potential in a certain area

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