农业环境科学学报Issue(5)：1007-1015,9.DOI:10.11654/jaes.2014.05.026
再生水灌溉土壤主要盐离子迁移模拟
Simulation of Salt Ion Migration in Soil Under Reclaimed Water Irrigation
摘要
Abstract
Reclaimed water has gradually become one of the main water sources for agricultural irrigation in the Northern China. Though treated, it may still contain heavy metals, salt ions and organic pollutants, and thus pose potential soil and groundwater pollution. Here, un-saturated soil water and solute movement model Hydrus-1D was used to simulate the vertical distributions of major nutrient ions SO 2-4 , Cl-, and NO-3 in soil profile over time, in order to understand the potential risk to the underground water. Salts in the current reclaimed water were not high enough to migrate into or pollute the underground water, but were adsorbed and accumulated in soil over time at the Xinhe ir-rigation district of Tongzhou county. The salt ions were mainly concentrated at the surface soil layer less than 50 cm. Our data show that re-claimed water was safe for agricultural irrigation. In order to prevent the secondary salinization of surface soils, however, high frequent flood-ing irrigation of reclaimed water should not be allowed, but alternate irrigation of reclaimed water and well water would be recommended.关键词
再生水灌溉/Hydrus-1D/盐离子运移/地下水污染Key words
reclaimed water irrigation/Hydrus-1D/salt ion migration/groundwater pollution分类
资源环境引用本文复制引用
叶文,王会肖,高军,刘海军,李艳..再生水灌溉土壤主要盐离子迁移模拟[J].农业环境科学学报,2014,(5):1007-1015,9.基金项目
中央高校基本科研业务费专项资金项目（2009SD-10）；国家自然科学基金项目 （）
