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城市污泥中含有较多或可供植物吸收利用的养分，也含有一些危害植物的重金属元素。为了探讨污泥对无芒雀麦吸收利用的影响，将七里河区污水处理厂生活污泥施于无芒雀麦人工草地。3年来对无芒雀麦和土壤进行多项监测，结果表明，各种重金属元素未在无芒雀麦体内积累，也没有向20cm以下的土壤中迁移，对土壤没有污染，是一种可在草地中应用的肥源。
Urban sludge contains more nutrients available for plant use, but also contains some of the plant’s heavy metal elements. In order to investigate the impact of sludge on the absorption and utilization of Bromus inermis, the domestic sludge from the sewage treatment plant in Qilihe District was applied to Artificial Grassland of Brome grass. In the past three years, there have been many surveys on B. sinensis and soil. The results showed that all kinds of heavy metal elements did not accumulate in B. sinensis and did not migrate to the soil below 20cm, and did not pollute the soil, Fertilizer used in grassland.