在农业生产中经常迂到需要立即知道土壤水分含量情况,以便及时制定适宜的土壤耕作、管理措施。测定土壤水分含量的方法很多,诸如烘干法、酒精燃烧法、负压计法和中子测定法等等。但是,这些方法大多需要一定的仪器设备和技术条 In agricultural production, it is often necessary to know the soil moisture content immediately so that appropriate soil cultivation and management measures can be formulated in a timely manner. There are many ways to determine soil water content, such as drying method, alcohol burning method, negative pressure method and neutron determination method. However, most of these methods require certain equipment and techniques