摘要
通过室内渗灌模拟试验,对低压毛管渗灌器在沙地土壤中水分入渗试验资料进行分析,结果表明:入渗率与入渗时间呈幂函数关系,而累积入渗量与入渗时间呈对数函数关系。湿润体近似于椭球体,并且水平扩散半径大于垂直入渗深度,椭球体的长轴在水平扩散方向左右对称,短轴在垂直入渗方向,上下不对称,且上短下长。
Based on the analysis of low-pressure capillary irrigation infiltration simulation test in sandy soil water, the results showed that infiltration rate and the infiltration of time showed the power function relationship, and the accumulated volume of infiltration and infiltration time was a function of the number. Moist body similar to ellipsoid, and the spread of the level of infiltration radius is greater than the vertical depth, ellipsoid level of proliferation in the long axis direction was symmetrical, in the short axis vertical infiltration direction, from top to bottom asymmetry, and short on the next chief.
出处
《水土保持研究》
CSCD
北大核心
2008年第6期153-156,共4页
Research of Soil and Water Conservation
基金
宁夏回族自治区科技公关计划项目"河东沙地灌木林水分高效利用及生命维持系统研究与示范"(05GG-10703)
国家林业局科技支撑计划项目"半干旱区沙地水土资源优化配置与高效利用技术研究"(2006BAD26B0702)
关键词
低压毛管渗灌器
水分运移
入渗率
low-voltage capillary infiltration irrigation
water movement
infiltration rate
