【摘要】 随着灌溉扩展和大规模节水灌溉的实施,新疆的土壤盐渍化表现了新的问题和趋势。通过对新疆玛纳斯河流域中下游的石河子垦区灌溉水样和土壤样品的采集分析,获得了流域的土壤盐渍化现状和灌溉方式、滴灌年限、灌溉水质等与土壤盐渍状况的关系。研究表明:石河子垦区的灌溉用水含有较高的HCO₃离子,长期灌溉将影响土壤的渗透性:垦区的土壤含盐变异强烈,碱化倾向明显;滴灌条件下盐分表现了在一定层面上的积累;灌溉方式、灌溉水质和滴灌年限都明显影响了土壤的盐渍状况。更多还原

【Abstract】 With the expansion of irrigation and extrapolation of large-scaled water-saving irrigation,soil salinization has triggered some new problems and shown a new trend in Xinjiang.Samples of soils and irrigation water were collected from the Shihezi Reclamation Zone in the lower and middle reaches of the Manas River,and analyzed for status of soil salinity and its relationship with the method and history of irrigation and irrigation water quality.Results showed that the irrigation water in the zone was quite high in HCOf content and long-term irrigation with such a water affected permeability of the soil;Soil salinity varied sharply in the zone,showing an obvious trend of alkalization.Under drip-irrigation salt accumulated at a certain soil layer;and soil salinity was closely related to the method and history of the irrigation,and irrigation water quality.更多还原