中文摘要：

利用SWAGMAN—Destiny数值模拟的方法对干旱区新疆玛纳斯河流域典型灌区大面积膜下滴灌条件下水盐运移进行模拟与验证，研究结果表明：模型模拟值与实测值拟合效果比较理想，说明该模型用于模拟干旱区土壤水盐运移是实际可行的；通过对不同传统灌溉（450时／hm^2）、现状灌溉（350m^3／hm^2）和现代节水灌溉（300m^3／hm^2）3种灌溉方案的场景模拟，高效节水灌溉模式土壤盐分比传统灌溉模式下降低26．2％，滴灌高效节水技术控制土壤次生盐渍化具有显著作用。旨在利用数值模拟的方法分析干旱区农业采取膜下滴灌技术的水盐运移规律，以期为科学合理的利用干旱区水资源提供理论依据及参考。

英文摘要：

This study analyzes water-salt movement of drip irrigated field in the Manas River Valley of northern Xinjiang with a nu- merical simulation model-SWAGMAN-Destiny. The results show that the effectiveness and validity of the model are verified as com- pared with experimental data, and the model-based simulation method can be used to investigate the water-salt movement in the study area. SWAGMAN-Destiny can be used to reflect water-salt movement under drip irrigation field with plastic mulch. Under different scenarios, compared with furrow irrigation, soil salinity decreases by 26. 16% under the drip irrigation. Water-saving technology significantly controls the soil salinization. The research results will provide government the effective measures and paradigm for sus- tainable water management in arid land.