| 污泥土地利用对草坪草及土壤的影响 |
| 摘要点击 1521 全文点击 2095 投稿时间：2002-05-30 修订日期：2002-09-17 |
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| 中文关键词 草坪草 污泥土地利用 土壤环境 |
| 英文关键词 sewage sludge land utilization grass soil environment |
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| 中文摘要 |
| 以沈阳北部污水处理厂污泥为研究对象,开展了污泥土地利用对草坪草及土壤环境影响的研究.结果表明,污泥土地利用可提高土壤养分含量特别是土壤中有机质含量;使草坪草获得了良好的生长响应,草坪草生物量增加,绿期延长;使土壤重金属含量有所增加,Cd元素含量超过土壤环境质量二级标准,而土壤Pb、Cu、Zn元素含量均未超过土壤环境质量二级标准;早熟禾对Pb具有良好的吸收富集能力,污泥在25、30、60t·hm-2低施入量时,结缕草对Cd、Cu、Zn具有良好的吸收富集能力. |
| 英文摘要 |
| Effects of land disposal of sewage sludge on grass and soil environment were studied. The sewage sludge used was from Northern Shenyang Wastewater Treatment Plant. The results showed that contents of nutrient in the soil were increased after sewage sludge application, especially for organic matter. Grass biomass were increased and the green period were extended with a better growth of the lawn. The heavy metal contents in the soil were increased with Cd contents beyond 2nd grade national environmental quality standard for soils. However, Pb,Cu,Zn contents not accumulated heavily. Poa annua had better ability of absorbing and accumulating Pb from the sewage sludge. When the application rate of sewage sludge capacity was at 25、30、60 t·hm-2, Zoysia japonica expressed significant absorption and accumulation of Cd,Cu,Zn. |
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