水土保持通报2018，Vol.38Issue(2)：307-312,6.DOI:10.13961/j.cnki.stbctb.2018.02.051
明沟排水对盐渍化枣田土壤盐分的影响
Effects of Ditch Drainage on Soil Salinity in Salinized Jujube Field
摘要
Abstract
[Objective] The effects of drainage ditch on the distribution of soil salinity in saline soil were studied,and the effects of water and salt reduction in clear gully drainage were clarified to provide theoretical basis for improving the economic benefits and ecological protection of jujube and the long-term improvement measures of saline soil.[Methods] The effects of drainage on the salinization of salinized jujube soil were studied.The soil samples of salinized jujube fields were sampled.The contents of water soluble salt,electric conductivity,pH value and equivalent proportion of salt base cation were measured.[Results] The content of salt ions decreased first and then increased with the increase of the distance from the ditch.The content of salt ions was the highest at 0 m,and then decreased with the increase of distance,reached the lowest at 40 m,the content of salt ions increased significantly after 40 m.In addition,from the ditch of 40 m,wherein soil salt damage shifted and decreased from NaCl cation type of severe degree into CaCl2 and Na2SO4 caused mild degree.[Conclusion] The best effect of ditch drainage salt reduction was observed around 40 m from the ditch.Impacted by drip irrigation and ion transport rate and other factors,salt ion aggregation phenomenon emerged in the soil surface and at the bottom as well.关键词
明沟排水/土壤盐渍化/枣田/盐分Key words
gutter drainage/soil salinization/jujube field/salinity分类
农业科技引用本文复制引用
张开祥,马宏秀,孟春梅,李宗飞,王开勇..明沟排水对盐渍化枣田土壤盐分的影响[J].水土保持通报,2018,38(2):307-312,6.基金项目
国家科技支撑计划项目“南疆沙区土壤盐渍化防控与生态修复关键技术研究”(2014BAC14B030-2) （2014BAC14B030-2）
