摘要
通过室内膜孔单向交汇肥液入渗试验,研究了肥液入渗下湿润锋的运移特性,建立了湿润锋运移速率与入渗时间的经验模型;分析了膜孔单向交汇面湿润锋形状,建立了交汇面湿润锋运移距离随时间变化模型;研究了湿润体内土壤含水量和土壤水分再分布的规律。研究成果为进一步进行膜孔灌溉技术研究提供参考。
Based on lab experiment under single-line interference infiltration of film hole irrigation with fertilizer solution infiltration, the transport characteristics of wetting front were researched, the mathematical models of transport velocity of wetting front and infiltration time were presented. The wetting front shape of interference section was analyzed, models for wetting front transport distance and infiltration time of interference section were developed. The soil moisture content and redistribution law were studied. The results settle scientific foundation for further study of film hole irrigation.
出处
《灌溉排水学报》
CSCD
北大核心
2007年第1期33-36,共4页
Journal of Irrigation and Drainage
基金
国家自然科学基金项目(50579064)
陕西高校省级重点实验室重点科研项目(03JS041)
关键词
膜孔灌
单向交汇
肥液入渗
湿润体特性
film hole irrigation
single-line interference
fertilizer solution infiltration, wetting body characteristics
