摘要
以试验为基础,针对重壤土、中壤土、砂壤土研究滴灌点源入渗的湿润锋运移规律,分析土壤种类、土壤容重、土壤初始含水率、滴头流量、灌水量等主要因子对湿润锋运动的影响。通过试验发现,除了土壤质地和灌水量对湿润体形状有明显影响外,土壤容重和初始含水率的变化也将造成湿润锋和滴灌效果的不同。另外,滴头流量对湿润锋水平运移影响很大。
Based on experiments, the movement of the wetting front was studied in clayloam, loam, and in sandy soil under point drip irrigation, and the effects of soil types, soil density, soil initial moisture, dripper discharge, and drop water to the movement of wetted front were analyzed. It were found in these experiments that the shape of wetted soil varied with soil textures and dripping water, and different soil density and soil initial moisture resulted in the differences of soil wetted front movement and of effects of dripping as well as dripping rate impacted extremely on the horizontal movement of soil wetted front.
出处
《灌溉排水学报》
CSCD
北大核心
2004年第3期14-16,27,共4页
Journal of Irrigation and Drainage
基金
国家"十五"重大科技攻关资助项目(2002BA901A37)
国家高技术研究发展计划"863"资助项目(2002AA2Z4201)
关键词
滴灌
点源入渗
湿润峰
土壤水分
土壤容重
drip irrigation
point source infiltration
wetted front
soil moisture
