本文基于动态发展的观点 ,确立了通辽地区水资源系统有限元模拟模型中各单元逐时段系统输入输出信息的计算模型 ,诸如降雨入渗补给量、潜水蒸发量、河渠和水库引放水渠渗漏量、地下水净开采量及灌溉回归水量等信息都综合考虑了降雨量大小、潜水蒸发强度、河渠流量大小、开采量 (或灌溉量 )大小和地下水埋深的关系 ,还考虑了其随时间、空间位置的变化关系。 Based on the dynamic development, this paper established the calculation model of input and output information of each unit in time-period system of water resources system finite element simulation model in Tongliao area, such as rainfall infiltration recharge, The amount of net groundwater extraction and the amount of return irrigation water all take into account the relationship between the size of rainfall, the intensity of submarine evaporation, the size of canal flow, the amount of exploitation (or irrigation amount) and groundwater depth, and also takes into account its relationship with time, Spatial location of the relationship between changes.