The determination of soil infiltration parameters includes three ways: field test,direct calculation method with irrigation information based on the water balance,and inverse method by irrigation simulation models. The determination of surface roughness coefficient includes three ways: determined by the irrigation experience,the direct method by Manning formula according to irrigation information and inverse method by irrigation simulation models.
土壤入渗参数的确定包括由田间试验测定、基于水量平衡原理根据灌水资料直接估算和借助灌溉模拟模型优化反求3种方式;田面糙率系数的确定包括由灌溉经验确定、根据灌水资料采用曼宁公式直接估算和借助灌溉模拟模型优化反求3种方式。
参考来源 - 地面灌溉土壤入渗参数及糙率系数确定方法研究综述·2,447,543篇论文数据，部分数据来源于NoteExpress
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