干旱地区农业研究2017，Vol.35Issue(4)：124-128,5.DOI:10.7606/j.issn.1000-7601.2017.04.19
膜下滴灌棉田冻融期土壤水分盐分变化特征
Soil moisture and salinity changes in cotton field of drip irrigation during freeze-thaw period
摘要
Abstract
The changes of soil salinity,moisture and temperature of film drip irrigation cotton field in north area from November 2014 to March 2015 were analyzed.Changes of soil water,heat and salt and their coupling relationship during freezing and thawing period were measured.The results revealed that during freezing and thawing period,the water content in the surface and deep soil was higher while middle layer had low water content.Degree of salinity increased with the soil depth,and was significandy enriched in surface soil.During freezing and thawing period,the distribution of water and salinity of soil profile was significantly changed.Soil water potential gradient and soil temperature gradient were the principal factors influencing soil water and salt migration,and soil water,heat and salt changed coordinately.关键词
滴灌棉田/冻融期/水分/盐分/变化特征Key words
drip irrigation/freezing and thawing period/moisture/salinity/variation分类
农业科技引用本文复制引用
由国栋,虎胆·吐马尔白,邵丽盼·卡尔江,吴永涛,李卓然..膜下滴灌棉田冻融期土壤水分盐分变化特征[J].干旱地区农业研究,2017,35(4):124-128,5.基金项目
国家自然科学基金(51469033) （51469033）
