毛管埋深对地下滴灌线源入渗土壤水分运移影响研究  

Effects of Capillary Depth on Soil Water Transport under Line Source Permeation of SDI

作　　者：任杰[1,2] 王振华[2] 温新明[3] 胡苏翔[4] 王俊亭[2] 安俊波[2] 

机构地区：[1]河海大学水利水电学院,南京210098 [2]石河子大学水利建筑工程学院,新疆石河子832000 [3]新疆农垦科学院,新疆石河子832000 [4]云南农业大学水利水电与建筑学院,昆明650201

出　　处：《灌溉排水学报》2008年第5期80-82,共3页Journal of Irrigation and Drainage

基　　金：兵团科技成果转化与推广计划项目(2006YD27);石河子大学自然科学研究与技术创新项目(ZRKX2006-Q16);石河子大学重大科技攻关专项(gxji2006-zdgg01);石河子大学高层次人才科研启动资金专项(RCZX200539)

摘　　要：通过室内试验,对地下滴灌土壤水分分布进行了观测分析。结果表明,在流量和灌水量一定的情况下,无论是在水平方向还是垂直方向上,随着毛管埋深的增加,湿润锋运移的速度减慢,且湿润锋在垂直方向和水平方向的运移距离也随着埋深的增大而减小。对于同一埋深而言,滴头二侧的含水率分布对称;对于不同的埋深,埋深越大,在距滴头一定距离内,含水率越高,并且随着滴灌带埋深的增加,湿润体饱和区域在不断增大,特别是在垂直方向上。Based on a primary experiment in the laboratory, the soil-water distribution of subsurface drip irrigation was observed and analyzed. The results showed that the flow rate and volume of water in certain circumstances, whether in vertical or horizontal direction, along with the increase in depth, the wetting front migration slowed and wetting front in the vertical direction and horizontal direction of migration dis- tance along with the depth increases. For the same depth, the considerable moisture content distribution is in the emitter on both sides, the greater depth in a certain distance from the emitter, the higher the moisture content. As the increase in depth, moisture is decreases. And with the depth of the drip, ball saturated humid region has kept increasing, particularly in the vertical direction.

关 键 词：地下滴灌 埋深 湿润锋 含水率 

分 类 号：S152.7[农业科学—土壤学]