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本文主要对膜孔沟灌的地面糙率、入渗规律等水力参数进行研究。根据水量平衡原理，确定入渗方程。由田间沟灌水流行进方程和入渗方程，推导计算膜孔沟灌的灌水均匀度Ed和灌溉效率Ea，并通过正变试验评价入膜流量、孔径和孔距对灌水质量和入渗等的影响。室内和田间试验结果表明：膜孔沟灌条件下，满宁（Manning）地面糙率系数n值与单位长度入渗孔口面积A呈对数相关关系n＝a＋blnA；入渗累积量Z与单位长度入渗孔口面积A和灌溉时间t满足Z＝ktme((c+dlnt)Ai)关系。
This paper mainly studies the hydraulic parameters such as the surface roughness and infiltration law of film hole furrow irrigation. According to the principle of water balance, determine the infiltration equation. Based on the equation and infiltration equation of the furrow irrigation water flow in the field, the irrigation uniformity Ed and irrigation efficiency Ea of the film hole furrow irrigation were deduced and the effects of inflow, pore diameter and hole spacing on the irrigation quality and infiltration were evaluated . The results of indoor and field experiments showed that under the furrow irrigation condition, the value of Manning roughness coefficient n was logarithmically related to the unit length of infiltration orifice area, n = a + blnA. The cumulative infiltration Z and unit length Infiltration orifice area A and irrigation time t satisfy Z = ktme ((c + dlnt) Ai).