基于水量平衡的膜孔畦灌水流推进过程研究  

Research on film hole border irrigation water flow advance procedure based on water balance model

作　　者：马孝义[1] 王向伟[1] 范海燕[1] 杨建飞[1] 

机构地区：[1]西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100

出　　处：《武汉大学学报（工学版）》2010年第6期685-688,共4页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:50879072);国家科技支撑计划课题(编号:2006BAD11B04);西北农林科技大学人才专项基金(编号:BJRC-2009-001)

摘　　要：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.Through introducing figure coefficient of surface water storage and analyzing the parameters of soil infiltration,the total water composition of film hole border irrigation water flow advance procedure is researched based on water balance model; it is shown that the total water includes surface water storage,infiltration water through film hole and the loss of water.According to the field experimental data,figuring out the ratio of the loss of water and the total water and irirgation water use efficiency.We draw a conclusion that the loss water contains film water storage and two dimensional infiltration water along the film hole wetting pattern,it makes irirgation water use efficiency and the utilization of water resources more higher.This can be provided technical support and application of film hole border irrigation in the field,innovating the content of water-saving agriculture and water-saving society.

关 键 词：水量平衡模型 膜孔畦灌 地表储水形状系数 曼宁糙率 

分 类 号：S275.9[农业科学—农业水土工程]