农业工程学报2012，Vol.28Issue(19)：63-70,8.DOI:10.3969/j.issn.1002-6819.2012.19.009
大田原生盐碱荒地入渗特性的试验
Study on infiltration characteristics of original saline-alkali wasteland
摘要
Abstract
In order to reveal infiltration characteristics of saline-alkali wasteland soil (SAWS), based on situ soil infiltration experiment of the four testing points in the fields and by comparing with infiltration characteristics of non saline-alkali soil, the infiltration process and characteristics of SAWS were discussed. The results show that the infiltration process of SAWS is similar to that of non saline-alkali soil, but the cumulative infiltration and infiltration rate of SAWS are far smaller than those of non saline-alkali soil, and the decay rate of infiltration is faster than non saline-alkali soil. The reason is that the hydraulic conductivity of SAWS is small, which is caused by the existing of exchanged sodium ion in great numbers, The cumulative infiltration and stability infiltration rate of SAWS have inverse proportion relationship with salt content and Na+ ion content in soil, The infiltration process of SAWS can be expressed by Kostiakov models, but the subsection model combined with two-parameter Kostiakov model has better characterization precision. The result is of definite significance for propelling the research of,soil moisture movement theory and can provide a technology support for the reforming of saline-alkali wasteland.关键词
入渗/模型/试验/原生盐碱荒地Key words
infiltration/ models/ experiments/ saline-alkali wasteland分类
农业科技引用本文复制引用
樊贵盛,李尧,苏冬阳,孔令超..大田原生盐碱荒地入渗特性的试验[J].农业工程学报,2012,28(19):63-70,8.基金项目
国家自然科学基金项目(40671081) （40671081）
山西省科技攻关项目(20051074). （20051074）
