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以新疆石河子棉区为例,在相同灌溉定额条件下,对不同灌水频率的棉花膜下滴灌土壤水盐运移的规律进行了研究。结果分析表明,在相同灌溉定额情况下,采用高频灌溉可以明显提高土壤含水率,对于灌溉定额为5 250 m3/hm2的处理,其洗盐的效果比3 300 m3/hm2和3 900 m3/hm2的效果明显要好,可有效抑制土壤返盐。
Taking Shihezi cotton district in Xinjiang as an example, under the same irrigation quota, the rules of soil water and salt transport under cotton under drip irrigation with different irrigation frequency were studied. The results show that under the same irrigation quota, the high-frequency irrigation can significantly increase the soil moisture content. When the irrigation quota is 5 250 m3 / hm2, the effect of salt washing is better than that of 3 300 m3 / hm2 and 3 900 m3 / hm2 significantly better effect, which can effectively inhibit soil salt return.