A system measuring soil moisture in sunlight greenhouse is studied and designed in the paper and the plan design, circuit design and choice of sensor are introduced.
通过研究设计了可用于温室土壤水分的测量系统，介绍了其方案设计、电路设计和传感器的选择等问题。
Tension infiltration meter is a kind of devices measuring soil moisture and solute movement parameters on the spot according to multi-dimensional infiltration theory.
张力渗透仪是一种根据多维入渗原理进行土壤水分和溶质运移参数原位测量的仪器。
The physical and chemical properties of soil and substrate are different, so the moisture sensors can not be used directly for measuring the substrate moisture due to the great errors.
土壤与基质的理化特性相差较大，土壤水分传感器测定基质含水率时有较大误差，不能直接用于基质含水率测定。
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