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Time:2022-08-17 21:44:24 Popularity:452
1 Soil moisture
Soil moisture is a physical quantity that represents the degree of soil dryness and moisture in a certain depth of soil layer, also known as soil moisture content. The level of soil moisture is restricted by various components of farmland water balance.
Soil moisture sensor, also known as soil moisture sensor, soil moisture sensor. The soil moisture sensor is composed of stainless steel probes and waterproof probes, which can be buried in soil and dams for a long time to perform fixed-point monitoring and online measurement of soil moisture in surface and deep layers. Used in conjunction with the data collector, it can be used as a fixed-point monitoring or mobile measurement tool to measure soil volumetric water content. It is mainly used for soil moisture detection and agricultural irrigation and forestry protection.
1.3 Soil moisture representation method
Soil moisture, that is, the actual water content of the soil, can be expressed as the percentage of soil water content in the weight of the dried soil: soil water content = water weight / dried soil weight × 100%. It can also be expressed as relative water content such as the percentage of soil water content and field capacity, or the percentage relative to saturated water.
According to the relative humidity of the soil, we can know the degree of soil moisture and how much water can be retained, which has reference value in irrigation. Soil moisture affects field climate, soil aeration and nutrient decomposition, and is one of the important conditions for soil microbial activity and crop growth and development.
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