容重对红壤水平入渗特性的影响  

Effects of Density on Horizontal Infiltration Characteristics of Red Loam Soil

作　　者：裴青宝[1,2] 赵新宇[2] 张建丰[1] 刘伟佳[1,3] 高金龙[2] 古鹏飞[2] 

机构地区：[1]西安理工大学水资源研究所,西安710048 [2]南昌工程学院,南昌330099 [3]江西省水利规划设计院,南昌330020

出　　处：《水土保持学报》2014年第6期111-114,共4页Journal of Soil and Water Conservation

基　　金：国家自然科学基金项目(51379172);江西省科技支撑基金项目(20122BBF60073);南昌工程学院青年基金项目(2014KJ002);江西省大学生创新创业项目(201311319024)

摘　　要：以江西典型红壤为研究对象,设定5组不同的土壤容重(1.2,1.25,1.3,1.35,1.4g/cm3),用水平土柱积水入渗模拟容重对入渗能力的影响。结果表明:湿润锋随容重的增加而减小,在入渗初期容重对红壤入渗能力有较大的影响,200min后容重对入渗的影响减弱,入渗率随累积入渗量的增大而减小;建立了红壤不同容重条件下水平一维入渗模型,分析认为容重对Philip模型入渗参数有较大影响,证明该模型具有较高的精度,可以用于不同容重条件下红壤入渗率随时间变化的预测。Effect of soil bulk density on soil infiltration was explored through horizontal infiltration simulated experiments.The experimental soils were different in soil bulk density（1.2,1.25,1.3,1.35,1.4g/cm^3）and selected the typical red loam in Jiangxi province as object.The results showed that：The infiltration volume weight had great influence to water infiltration capacity of red loam soil in the beginning and wetting front decreases with the increase of bulk density,effects of bulk density on infiltration rate weaken after 200 min,the influence of infiltration rate decreased with the increasing of cumulative infiltration amount.The establishment of a red loam under different density levels of one-dimensional infiltration model conditions,analysed and believed that density had a greater impact on Philip infiltration parameter model,tested that the model had high accuracy.It could be used under different bulk density conditions of red loam infiltration rate forecast changes over time.

关 键 词：水平入渗 红壤 容重 

分 类 号：S152.5[农业科学—土壤学] S152.72[农业科学—农业基础科学]