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当前位置: 首页 > 文章 > 北运河流域非点源氮磷污染模拟分析及灌溉模式优化 节水灌溉 2011 (11) 46-49+52
Position: Home > Articles > Non-Point Source Nitrogen and Phosphorus Pollution Simulation and Irrigation Mode Optimization of the North Canal Basin Water Saving Irrigation 2011 (11) 46-49+52

北运河流域非点源氮磷污染模拟分析及灌溉模式优化

作  者：
刘银迪;徐建新;陆建红;赵鹏
单  位：
华北水利水电学院
关键词：
农业非点源污染;SWAT模型;模拟;灌溉模式
摘  要：
为了减轻北运河流域农田灌溉引起的非点源污染,探索良性农田管理模式,选取北运河流域武清区为研究对象,采用改进的SWAT模型模拟不同灌溉方案下武清区地表径流非点源氮磷污染。结果表明:同一灌溉定额下,随着污灌次数的增加,流域水体内氮磷负荷总量呈先降后升的趋势;在所制定的灌溉情景中,冬小麦越冬、拔节期和夏玉米抽雄期进行污灌,其余生育阶段进行清水灌溉时,非点源污染总负荷量最小;在节水灌溉时,灌溉定额的变化对水体内氮磷负荷总量影响不大。研究表明:不同灌溉方案下非点源氮磷污染特征不同,在作物生育期采用小定额清污轮灌,能够较好地控制非点源氮磷污染物的迁移。
译  名：
Non-Point Source Nitrogen and Phosphorus Pollution Simulation and Irrigation Mode Optimization of the North Canal Basin
作  者：
LIU Yin-di,XU Jian-xin,LU Jian-hong,ZHAO Peng(North China University of Water Conservancy and Electric Power,Zhengzhou 450011,China)
关键词：
agricultural non-point source pollution;SWAT model;simulation;irrigation mode
摘  要：
In order to reduce the non-point source pollution caused by the farmland irrigation of the North Canal Basin and develop a sound farmland management model,the improved SWAT model is adopted to simulate the surface-runoff non-point source nitrogen and phosphorus pollution under different irrigation modes in the Wuqing area in the North Canal Basin.The simulation results indicate that under the same irrigation quota,with the increaseof the number of the sewage irrigation times,the total nitrogen and phosphorus load amount in the water body of the basin firstly reduces and then increases;in all the instituted irrigation modes,it could make the total non-point source pollution load minimum to irrigate sewage in the wintering period and the jointing stage of the winter wheat,and the tasseling stage of the summer maize.Besides,under water-saving irrigation,the irrigation quota change has little effect on the total nitrogen and phosphorus load amount in the water body.The results demonstrate that the characteristics of the non-point source nitrogen and phosphorus pollution under different irrigation modes are different,and it could control the transport of the non-point source nitrogen and phosphorus pollutants well to adopt small-quota rotation irrigation of clean and sewage water in growth periods of crops.

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