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文章根据多年实际观测资料，在土壤水分平衡参数模拟方法的基础上，利用初始土壤有效水分贮存量、降水量和实际蒸散量３要素，建立了０～５０ｃｍ土层的土壤水分动态监测模式，确定了各项参数的计算方法．通过１１个站点两年的检验和试用，对主要农作物春小麦和春玉米农田的水分状况监测准确率达８０％以上．同时，对两个站点的土壤水分进行了预报，准确率平均为９２％．
Based on the actual observation data for many years, based on the method of soil moisture balance parameter simulation, the dynamic monitoring model of soil moisture in 0 ~ 50cm soil layer was established by using three elements of effective soil water storage, precipitation and actual evapotranspiration. The calculation of the parameters. Through 11 years of site inspection and trial of two years, the main crops of spring wheat and spring corn farm water monitoring accuracy of more than 80%. At the same time, soil moisture at two sites was predicted with an average accuracy of 92%.