【摘要】 化肥农药的过量施用已经对水环境构成了威胁。介绍了美国俄亥俄州立大学研究开发的"灌溉-排水-湿地综合管理系统"(WRSIS系统),该系统是为了控制、减少乃至解决农业非点源污染问题而开发的以水利措施为主的水环境修复技术。结合我国灌溉排水系统的实际情况对该系统进行了改造,并在广西桂林开展了试验研究。结果表明,引进和改进WRSIS系统治理水稻灌区非点源污染是一条行之有效的途径。更多还原

【Abstract】 The excessive application of fertilizer and pesticide and its losses have exerted a great threat on the water environment.This paper introduces the Wetland-Reservoir-Subirrigation System(WRSIS),which is developed by Ohio State University and supplies a kind of water environment restoring technology,mainly based on hydraulic measures,for the control,reduction and solution of the problem of agricultural non-point source pollution.Considering the current status of irrigation and drainage systems in China,the WRSIS is re-designed and experimental studied in Guilin City of Guangxi Autonomous Region.The results show that the importation and re-design of WRSIS will be a practical and promising way to deal with the non-point source pollution in rice-based irrigation system.更多还原