农田优化灌溉动态管理基本程序与方法研究

从土壤———作物———大气连续体角度出发 ,利用田间试验资料和气象资料 ,分析了影响优化灌溉方案制定的有关因子 ,确定出春小麦、春玉米不同生长阶段土壤水分控制下限标准 ;在土壤水分平衡理论的基础上 ,建立了时域滚动预报灌溉日期的方法 ;并以春小麦、春玉米农田为例进行了检验 ,结果比较理想

Study on Basic Program and Method of Optimum Dynamic Management for Field Irrigation

As viewed from the soil crop air successive system, according to the field experimental materials and climate data, the related factors influencing the formulation of optimum irrigation alternative are analyzed. In this paper, the basic program of optimum field irrigation management is summarized and discussed, the low limit of soil water controlled in the growing period of spring wheat and maize is defined. Based on the theory of soil water balance, the time zone rolling forecast method of irrigation date is established. All the findings are checked by the case study of spring wheat and maize, the result is quite satisfactory.