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以常年膜下滴灌北疆棉田为研究对象,探讨了积雪消融对土壤水盐运移的影响。结果表明,季节变化对冻结层以下部分的盐分影响较小,冬季冻土层盐分处于停滞状态。春季融化雪水对表层0~10cm左右土壤盐分有洗淋作用。当春季冻土层完全融通时,地表蒸发强烈,冬季累积于结冻层中的盐分在土壤表层积聚,盐分主要集中于0~10cm土层,个别地块春季含盐量大于冬季。
The perennial film drip irrigation in northern Xinjiang as a research object, discusses the effect of snow ablation on soil water and salt migration. The results show that the seasonal variation has little effect on the salinity of the part below the frozen layer, and the salt content in the frozen layer of the frozen soil is at a standstill. Spring melts snow on the surface 0 ~ 10cm of soil salinity has a shower effect. When the spring permafrost completely melted, the surface evaporates strongly. During winter, the salt accumulated in the frozen layer accumulates on the soil surface. The salinity mainly concentrates in 0 ~ 10cm soil layer. The salt content in spring in individual plots is higher than that in winter.