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以库尔勒市包头湖农场长期膜下滴灌棉田为研究对象,通过连续3年棉田整个生育期土壤水分和盐分含量的测定,对长期膜下滴灌棉田土壤水盐分布变化及其对棉花生长影响进行了研究。结果表明:各年份土壤平均含水率在整个生育期呈降增降的趋势,平均含盐量呈增降增的趋势;20~50cm土层土壤含水率较高,土壤盐分在30~50cm土层聚积;土壤含盐量高于0.51%时产量开始受到抑制,高于1.79%时棉花产量将降低为零。
Taking the long-term film-drip irrigation of cotton fields at Baotou Lake Farm in Korla as the research object, the changes of soil water and salt distribution and its effects on the cotton growth under long-term drip irrigation were studied through the determination of soil moisture and salt content in cotton field for three consecutive years. the study. The results showed that the average soil water content of all the years tended to decrease and decrease in the whole growth period, and the average salt content increased and decreased. The soil moisture content in 20 ~ 50cm soil layer was higher, and the soil salt content was in 30 ~ 50cm soil layer Accumulation; soil salinity higher than 0.51% production began to be inhibited, above 1.79% cotton production will be reduced to zero.