非充分灌溉制度的求解方法

Method for the Design oF InAadewuate Irrigation Scheduling

根据农田水量平衡原理以及作物腾发与产量相乘模型，分析了非充分灌溉制度的动态规划求解方法，并编制了相应的电算程序。该程序给出了全生育期不同灌溉定额情况下最优灌溉制度和最优产量比，并给出了各生育阶段实际民发量和计划湿润土层含水量动态变化过程。通过算例表明，该程序操作方便，设计合理，是灌区灌溉管理及高产增收的实用计算机软件。

ccording to the principics of field water balance and evapotranspiration and yield multi-plicative medel,this paper presents a dynamic programming methed for inadequate irrigation scheduling,and acorresponding computer programme is developed. This programme can give the optimal irrigation scheduling and the optimal yield ratio under the condition of vari-ous irrigation quota,and the actual evapotranspi rdtion and variati on process of soil water content.The example indicated that the programme is convenient in oporation and reason-able in design, and it is an applicable computer software for irrigation district management.