【摘要】 黑龙江省江川农场实施旱田改水田后,粮食产量持续上升,同时也暴露了以总氮和总磷为主的非点源污染问题。农田氮磷流失主要包括以下几个方面:降雨径流(排水)过程、土壤侵蚀和泥沙输移过程、污染物迁移转化过程。文章基于美国通用土壤流失方程(USLE)和降雨径流模型(SCS),结合调查资料,分别估算2013年江川农场水田和旱田的总氮和总磷的年输出负荷,从而得出旱改水对水环境的影响结论。更多还原

【Abstract】 After Jiangchuan farm changed from dry field to paddy field,the non-point source pollution also exposed predominantly. The lost of N and P mainly resulted from rainfall-runoff(drainage),soil erosion and sediment transportation and pollutant migration. Based on the universal soil loss equation(USLE) and rainfall-runoff model( SCS),this study is combined with survey data to estimate the load of TN and TP in dry field and paddy field during 2013 to study the impact on water environment caused by changing from dry field to paddy field.更多还原