玛纳斯河中游耕地灌溉方式变化对棉田土壤主要盐离子含量的影响

发布时间：2018-03-08 16:23

  本文选题：土壤盐离子　切入点：土壤含水量　出处：《干旱区资源与环境》2016年05期 　论文类型：期刊论文

【摘要】：采用实际田间取样、土样实验室分析以及统计分析等方法,对玛纳斯河中游耕地不同灌溉方式下棉田土壤主要盐离子含量的变化进行定量分析。研究结果表明:漫灌方式下土壤中Cl-/SO2-4值在各土层均有上升趋势,而滴灌方式下Cl-/SO2-4值在各土层表现出先上升后下降的趋势,在6月有一个高点,但随后下降到与4月相似的水平,表明漫灌方式比滴灌方式更易使得土壤的盐渍化类型向氯离子类型转变。研究结论对减缓土壤盐渍化、指导灌溉施肥管理以及耕地的可持续利用均有积极意义。
[Abstract]:Actual field sampling, laboratory analysis of soil samples and statistical analysis were used. The changes of main salt ion contents in cotton soil under different irrigation methods in middle reaches of Manas River were quantitatively analyzed. The results showed that the Cl-/SO2-4 value of soil increased in all soil layers under the condition of diffuse irrigation. However, under drip irrigation, the value of Cl-/SO2-4 increased first and then decreased in all soil layers, and reached a high point in June, but then decreased to a level similar to that of April. The results showed that the soil salinization type was changed to chloride ion type more easily by the method of diffuse irrigation than by drip irrigation. The conclusion of the study has positive significance for slowing down soil salinization, guiding irrigation fertilization management and sustainable utilization of cultivated land.
【作者单位】： 陆地表层格局与模拟重点实验室中国科学院地理科学与资源研究所;北京师范大学资源学院;石河子大学理学院;
【基金】：国家自然科学基金(41171083,U1203181)资助
【分类号】：S562;S156.41
，

本文编号：1584665