新疆叶尔羌河盐碱化灌区水盐动态规律研究

Study on Dynamic Variation of Water-salt in Salinized Irrigation Area of Xinjiang Yerqiang River

土壤次生盐碱化是威胁新疆绿洲灌区持续灌溉农业的关键因子。以新疆叶尔羌灌区为例，通过监溯灌区内荒地的表土层（0-20cm）盐分和1m土层储盐量的动态变化，分析灌区水盐分布规律及时空变化状况，探讨土壤水分的消耗规律和灌区内不同类型土壤的表层含盐量关系，从土壤盐分的类型及盐碱化程度等方面得到了可靠的科学依据，为灌区土壤盐碱化防治提供决策依据。

The soil secondary salinization is the key factor threatening the sustainable irrigation agriculture in Xinjiang oasis irrigation area. Taking Yerqiang River irrigation area as an example and through the monitoring of the dynamic variation of surface soil salinity （0-20 cm） and salt content of 1 m soil layer, the water and salt distribution rules and, the time and space variation were analyzed thoroughly in irrigation area, the soil water consumption law and relation of surface soil salinities with different soil types in irrigation area were discussed, the reliable scientific evidence was gained from several aspects, such as the types of soil salinity, salinization degree, and so on. The research provides scientific basis for decision-making in prevention and control of the soil salinization.