【摘要】 以水量平衡原理为基础,通过对畦灌地表水面线的概化,并将Philip入渗公式等同为α=0.5的Kostiakov修正模型,由此建立了利用畦灌水流推进过程同步推求Philip土壤入渗参数和田面综合糙率的模型。结合文献资料和大田试验对所建模型进行验证,并采用Matlab软件求解,得出不同地表储水形状系数σh下的入渗参数和糙率,并分别对入渗参数和田面综合糙率的可靠性进行了验证,结果表明所建模型同步推求土壤入渗参数和田面综合糙率是可靠的,并且计算方便,精度较高。更多还原

【Abstract】 Based on the principle of water volume balance,by generalizing the surface water profile and Philip infiltration formula equivalent for Kostiakov model when infiltration parameter α=0.5,the model of synchronously determining Philip infiltration parameters and synthesis roughness according to the advance of border irrigation water was set up.The values of infiltration parameters and roughness were obtained under the different figure coefficient of surface storage σh,some research results and field experiments testified,by using the software of Matlab to solve the model.Then these parameters were confirmed,the results showed that synchronously determining Philip infiltration parameters and synthesis roughness were reliable.The study indicates that the analytic model has some advantages,such as simple calculation method and solution,higher accuracy.更多还原