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通过设置3种灌水量水平(100%ETc、80%ETc、60%ETc)和3种灌水水质水平(0.7、3和6g·L-1),研究了咸水灌溉条件下春小麦120cm土层内水分动态和盐分累积特征.结果表明:水分在农田土壤中的分布主要受灌水量和土壤质地的影响,充分灌溉使水分存贮在较深土层中,而非充分灌溉则使水分存贮在表层;在相同灌水量的条件下,土体内的盐分积累程度随着灌溉水矿化度的增大而加剧;在相同矿化度条件下,土体内的盐分含量及积盐深度随着灌水量的增加而增大.在作物整个生育期内,连续使用咸水灌溉将导致土壤积盐,且非充分灌溉较充分灌溉更易使土壤表层积盐.
By setting three irrigation levels (100% ETc, 80% ETc, 60% ETc) and three irrigation water levels (0.7, 3 and 6g · L-1) Water dynamics and salt accumulation characteristics.The results showed that the distribution of water in farmland soil was mainly affected by the amount of irrigation and soil texture, adequate irrigation stored the water in the deeper soil layer, while not fully irrigated, Under the same irrigation condition, the accumulation of salinity in the soil aggravated with the salinity of irrigation water. Under the same salinity, the salinity and salt accumulation depth in the soil increased with the irrigation amount Of the total crop growth period, continuous use of salt water irrigation will lead to salt accumulation in the soil, and inadequate irrigation more fully irrigated soil surface salt accumulation.