渾河上游典型地塊農(nóng)田玉米種植對面源污染影響調(diào)查

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摘  要：該文在徑流前、徑流中和徑流后對不同地塊進行監(jiān)測，分析玉米農(nóng)田土壤表面或土體中的氮、磷等污染指標對地表水體的影響程度，選取有代表性的渾河上游流域農(nóng)田作為研究對象，從而確定農(nóng)田面源對地表徑流的污染程度。實驗數(shù)據(jù)表明，施肥后首次徑流和強降雨對地表徑流污染物影響較大。

關鍵詞：玉米;面源污染;污染物;渾河上游;農(nóng)田

中圖分類號：S513       文獻標志碼：A          文章編號：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

大伙房水庫位于渾河上游，是遼寧省7個城市的重要飲用水源地，除總氮外，大伙房水庫常年水質(zhì)保持在地表水Ⅱ類水質(zhì)。（剩余1487字）