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对咸水结冰灌溉融冰后不同防止返盐措施处理的土壤水盐动态以及棉花的出苗、生长特征和产量进行了研究。结果表明,不同的覆盖措施对抑制土壤表层水分蒸发的效果有显著差异,3月和4月份表层土壤含水量影响5月份的含盐量,而5月份表层土壤的含盐量直接决定棉花出苗率。地膜覆盖和保留前茬旧膜的处理保墒抑盐效果最好,棉花出苗率和产量也最高;秸秆覆盖也有一定的抑盐效果;而翻耕和中耕对土壤保墒抑盐的作用较差;液态膜处理的抑盐效果最差,棉花的出苗率和产量最低。可见保留前茬旧膜是简便有效的保墒抑盐途径。
The salt and water ice irrigation after ice melting ice to prevent salt treatment measures of soil water and salt dynamics and cotton emergence, growth characteristics and yield were studied. The results showed that the different covering measures had significant differences on the inhibition of soil water evaporation. The surface soil moisture content in March and April affected the salt content in May, while the soil salinity in May directly determined the emergence rate of cotton . Pretreatment of plastic film mulching and retention of the former film had the best effect of preserving soil moisture and salinity, and the emergence rate and yield of cotton were the highest. Straw mulching also had certain salt suppression effect; while tillage and cultivating had a poorer effect on soil moisture retention and salt suppression; Membrane treatment of the worst salt suppression, cotton emergence and yield the lowest. Preserved film can be seen before the stubble is simple and effective way to preserve moisture and salt.