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通过引入地表储水形状系数和试验分析膜孔灌土壤入渗参数,基于水量平衡原理研究膜孔畦灌水流推进过程中入畦水量是由地表储水量、膜孔入渗水量和损失水量组成.结合田间水流推进试验,量化计算膜孔畦灌水流推进过程中损失水量与入畦流量的比值及灌溉水的有效利用率,并分析得出损失水量是由膜上积水和沿膜孔湿润体周围二维入渗的水量组成,沿膜孔湿润体二维入渗的水量提高了灌溉水的有效利用率,从而实现了水资源的高效利用,为推进膜孔灌的大田推广和发展提供技术依据,对发展节水农业和构建节水社会有一定的创新性.
By introducing the shape coefficient of surface water storage and analyzing the infiltration parameters of film hole irrigation, based on the theory of water balance, the water inflow into the film hole irrigation water flow is composed of surface water storage capacity, membrane infiltration water loss and water loss. Field water flow test to quantify the ratio of water loss to inflow rate and the effective utilization rate of irrigation water in the process of membrane perfusion irrigation and quantitative analysis calculated that the water loss is caused by the accumulation of water on the membrane and around the membrane wetting body The amount of infiltrated water and the amount of water infiltrated along the membrane wetting body increased the effective utilization rate of irrigation water so as to realize the efficient utilization of water resources and provide the technical basis for promoting the popularization and development of membrane hole irrigation in the field, The development of water-saving agriculture and building a water-saving society has some innovation.