张力计在土壤水分研究和农业生产上有重要价值,能弄清土壤水分动态变化和作物生长的关系,并能提供一系列控水指标。是用来指导合理排灌,直接为国民经济建设服务的有用仪器。现将在土壤水分研究和农业生产上的应用分述如下: 一、用张力计研究土壤水分运动自然界的物质或能总是从势能高的地方向势能低的地方运动,直至达到动态平衡为止。土壤水的运动也是如此。对于饱和流(土 Tensiometer has important value in soil moisture research and agricultural production, can clarify the relationship between soil moisture dynamic changes and crop growth, and can provide a series of water control indicators. It is a useful instrument to guide rational irrigation and drainage and directly serve the national economy. The application of soil moisture research and agricultural production will now be described as follows: First, the study of soil moisture with tension meter The nature of the material or can always move from a high potential energy potential to low potential areas until it reaches a dynamic equilibrium. So is the movement of soil water. For saturated flow (soil