【摘要】 基于Ｎａｓｈ单位线的计算非点源污染负荷的集总型水质数学模型中包含四个参数，水文和水质各两个如何确定模型的参数是模型应用的关键为此，介绍了一种该模型的参数识别方法，所有结论都经严格推导而得出该方法在四川沱江迳流实验场负荷模拟中应用表明，效果令人满意表２，参５更多还原

【Abstract】 There are four parameters,two are hydrological parameters and the other two are water quality parameters, in the concepual model for calculating nonpoint source loading based on the Nash Hydrological Model.In application the key is to identify the 4 parameters.In this paper,a new method to identify the parameters is proposed,and all conclusions are demonstrated strictly.The method is used successfully for determining the parameters of the Tuojian river runoff experiment field model.2tabs.,5refs.更多还原