浑河上游典型地块农田玉米种植对面源污染影响调查

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摘  要：该文在径流前、径流中和径流后对不同地块进行监测，分析玉米农田土壤表面或土体中的氮、磷等污染指标对地表水体的影响程度，选取有代表性的浑河上游流域农田作为研究对象，从而确定农田面源对地表径流的污染程度。实验数据表明，施肥后首次径流和强降雨对地表径流污染物影响较大。

关键词：玉米;面源污染;污染物;浑河上游;农田

中图分类号：S513       文献标志码：A          文章编号：2096-9902（2022）16-0034-03

Abstract： Different plots were monitored before， during and after runoff， and the influence of nitrogen and phosphorus pollution indexes on the surface water body was analyzed， so as to determine the pollution degree of farmland non-point source to surface runoff. By selecting the representative farmland in the upper reaches of the Hunhe River as the research object， the experimental data show that the first runoff and heavy rainfall after fertilization have great influence on the pollutants in surface runoff.

Keywords： corn; non-point source pollution; pollutant; Hunhe River upstream; farmland

大伙房水库位于浑河上游，是辽宁省7个城市的重要饮用水源地，除总氮外，大伙房水库常年水质保持在地表水Ⅱ类水质。（剩余1487字）