摘要
根据1988～1989年的观测资料总结出旱农实验区生长季节土壤水分的时空变化规律。应用逐步回归的方法,找出了旬土壤含水量与旬降水量、旬平均饱和差及前一旬土壤含水量之间的线性关系,据此建立了预报方程。
Based on the 1988～1989 observational data,this paper summarized variable law of time changes and vertical distribution of soil moisture of grow- ing season in Farming Experimental Area.Applied method of progressive regre- ssion,the linear relations between the days'soil moisture content and the same ten days'precipitation,and between ten days'mean saturation deficit and the last ten days soil moisture content are obtained,and established forecasting equation.
关键词
土壤水分
逐步回归
降水量
饱和差
soil moisture
progressive regression
precipitation
saturation deficit
