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Regulation Impact of Straw Mulch on Soil Salinity Distribution under Drip Irrigation for Cotton
Pages: 26-28
Year: Issue:  7
Journal: Water Saving Irrigation

Keyword:  cottondrip irrigatiom straw mulchingsoil salinity distribution;
Abstract: 为探索秸杆覆盖对土壤盐分分布的调控作用,采用测坑试验,设置了表层覆盖、地表下30cm覆盖和无覆盖三种处理进行对比试验研究,结果表明:盐碱土秸秆覆盖后影响了土壤盐分的运移和分布,不同位置秸秆覆盖可以抑制盐分上移,调控盐分在秸秆覆盖层下方的分布。地表下30cm处覆盖秸秆后0~20cm土层盐分含量较低,30~40cm深处土层盐分小幅聚集。地表下30cm秸秆覆盖具有明显的抑制盐分上移作用,且抑盐效果高于表层覆盖。秸秆覆盖能够起到调控盐分分布,在一定程度上改良盐碱土。
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