干旱地区农业研究2016，Vol.34Issue(5)：269-274,6.DOI:10.7606/j.issn.1000-7601.2016.05.41
冻融期膜下滴灌棉田水盐时空动态特征研究
Study on spatial and temporal variabilities of soil moisture and salt during freeze-thawing period in cotton field with drip irrigation
摘要
Abstract
The coefficient of variation of the classical statistics was used to analyze the spatial-temporal dynamic variability characteristics of soil moisture and salinity content in the cotton field of Shihezi district in Xinjiang Uygur Au -tonomous Region ,China .The results indicated that during the whole freezing and thawing period ,for all soil layers ,the coefficient of variation in soil moisture with bare land treatment (L) was higher than that with the mulching treatment (M) .At the maximal depth of frozen soil layer around 90 cm ,soil salinity exhibited strong variability with a coefficient of variation up to 1 .1 .Soil content demonstrated moderate variability in the vertical profile ,and salinity content present-ed strong variability .During the whole freezing and thawing period ,changes of salinity in frozen zone varied little with both bare land and mulching treatment ,the 120 cm soil layer was stable for salinity accumulation ,indicating that mulching had no significant effect on the layer beneath 120 cm .The results in this paper could be considered as a theo-retical basis for prevention of the secondary salinization in soil ,which would be conducive to the sustainable and safety use of the local farmland .关键词
变异系数/冻融期/滴灌棉田/水盐/变化特征Key words
coefficient of variation/freeze-thawing period/cotton field with drip irrigation/soil moisture and salinity分类
农业科技引用本文复制引用
虎胆·吐马尔白,赵永成,马合木江·艾合买提..冻融期膜下滴灌棉田水盐时空动态特征研究[J].干旱地区农业研究,2016,34(5):269-274,6.基金项目
国家自然科学基金（51069033）；自治区地方公派出国留学成组配套项目 （）
