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膜下滴灌在节水灌溉同时,会增加了土壤次生盐渍化风险,不利于农业生产。本文选取南疆棉花花铃期典型膜下滴灌地,分别在滴头下,棉花窄行间,背行3个位置分层取样,测定土壤盐分含量,分析其盐分在水平方向和垂直方向上的分布规律,发现膜下滴灌的土壤盐分分布规律会因不同的滴灌模式等差异而与一般性规律有所不同。结合当地实际生产条件,分析盐分分布对于指导当地农业生产具有重要意义。
Under drip irrigation, water-saving irrigation will increase the risk of soil secondary salinization, which is not conducive to agricultural production. In this paper, the typical cotton drip irrigation under cotton field in southern Xinjiang was selected and sampled at three positions, ie drip head, cotton narrow row and back row respectively, to determine the content of soil salinity and to analyze its salt content in horizontal direction and vertical direction Distribution law found that under the film drip irrigation of soil salinity distribution rules due to different drip irrigation patterns and other differences with the general laws. Combining with the actual production conditions in the area, analyzing the distribution of salinity is of great significance to guide the local agricultural production.