膜孔灌溉下土壤下渗量特征及影响因子研究  

Study on soil infiltration characteristics and influencing factors under membrane pore irrigation

作　　者：王颖 WANG Ying

机构地区：[1]辽宁省鞍山水文局,辽宁鞍山114000

出　　处：《东北水利水电》2020年第8期42-45,72,共5页Water Resources & Hydropower of Northeast China

基　　金：辽宁省农业科技攻关研发项目(20170615)。

摘　　要：文中对膜孔灌溉方式下土壤下渗量及影响因子进行试验分析,并建立单元膜孔面积累积入渗量与湿润体积的经验模型。结果表明:土壤容重是膜孔灌溉方式下渗量影响主因;下渗水体湿润体积内含水率增量影响因子,相关度排序为:初始含水率>土壤容重>压力水头>黏粒含量。经检验,构建的经验模型计算的含水率增量和试验值,总体误差小于20%。In this paper, the experimental analysis of soil infiltration and its influencing factors under membrane pore irrigation was carried out, and an empirical model of cumulative infiltration and wetting volume of unit membrane pore area was established.The results show that soil bulk density is the main factor affecting the infiltration of membrane pore irrigation. The order of correlation is: initial moisture content,soil bulk density,Pressure head and clay content. After testing, the total error of moisture content increment and test value calculated by the empirical model is less than 20%.

关 键 词：膜孔节水灌溉 累积入渗量 湿润体积 经验模型 影响因子 

分 类 号：S27[农业科学—农业水土工程]