研究谷子、大豆植被过滤带对黑土缓坡耕地泥沙及氮、磷养分的拦蓄特征,为农业面源污染的防控提供技术支撑。试验结果表明:2种植被过滤带对泥沙及氮、磷养分的拦蓄量均随过滤带宽度的增加而增大;过滤带对氮的拦蓄效应大于对磷的拦蓄效应;过滤带的泥沙拦蓄量与过滤带宽度之间的相关性是谷子大于大豆,即谷子对过滤带宽度的要求高于大豆。 Research on the interception characteristics of silt and soybean vegetation strata on silt and nutrients of nitrogen and phosphorus in gentle slope farmland of black soil and provide technical support for the prevention and control of agricultural non-point source pollution. The results showed that the amount of suspended sediment, nitrogen and phosphorus in the two vegetation belts increased with the increase of filter belt width. The straining effect of filter belt on nitrogen was greater than that of phosphorus. The sediment of filter belt The correlation between the amount of storage and the width of the filter band is that millet is larger than soybeans, that is, millet requires higher filter band width than soybeans.