容重对红壤土水平一维入渗水分运移特性的影响  

Study on the Effect of Bulk Density on One-dimensional Horizontal Infiltration and Water Transport Properties in Red Soil

作　　者：贺卫华 梁欣欣[2] 陆飞[2] 

机构地区：[1]湖南省湘潭市水利水电勘测设计院,湖南湘潭411400 [2]南昌工程学院,江西南昌330099

出　　处：《安徽农业科学》2016年第12期165-167,共3页Journal of Anhui Agricultural Sciences

基　　金：江西省科技成果重点转移转化项目(20142BBI0020);国家自然科学基金项目(51269020)

摘　　要：[目的]研究水平一维入渗条件下,容重对红壤土水分入渗的影响。[方法]以不同容重的红壤土为研究对象,进行了室内水平入渗试验。[结果]相同时间内容重越大,水分运移的速度越慢,湿润锋运移距离越小,累积入渗量越小;在湿润锋之上,相同容重的土壤含水量差别不大,在相同的入渗距离,土壤容重越大,含水量越小。[结论]建立了红壤土一维水平入渗条件下容重与湿润锋关系模型,改进了一维水平入渗条件下的Philip模型。[Objective]The aim was to study the effects of soil bulk density on moisture infiltration under the condition of one-dimensional horizontal infiltration.[Method] With different bulk density red soil as the research object,indoor horizontal infiltration experiment was conducted.[Result]The experimental results showed that during the same time,the higher the density,the slower the moisture migration speed,the smaller wetting front transport distance and the cumulative infiltration amount;On the wetting front,the soil＇s moisture of same density aren＇t very different,but in the same infiltration distance,the greater the soil bulk density,the smaller the moisture content.[Conclusion] The relationship model between bulk density and wetting front under the condition of red soil one-dimensional horizontal infiltration is established,the Philip model under one-dimensional horizontal infiltration condition is improved.

关 键 词：红壤 水平入渗 容重 

分 类 号：S152.5[农业科学—土壤学]