农田排水中磷素对苏南太湖水系的污染 |
摘要点击 1980 全文点击 2000 投稿时间:1993-05-12 |
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中文关键词 农田排水 磷素 负荷量 |
英文关键词 farmland drainage phosphorus discharge |
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中文摘要 |
采用封闭体系和磷素平衡方法研究苏南太湖地区农业面源中磷的排出负荷量和减少磷排出负荷量的措施.实验结果表明,雨水较丰富的1987年,苏南太湖流域农田地表排出磷的总负荷量为440.4t/a,而较为干旱的1988年为299.9t/a. |
英文摘要 |
By the phosthorus balance method in a closed system, this paper dealt with the discharge of phosphorus from agricultural non-point source in Taihu-Lake region in southern Jiangsu Province, and the measures to reduce this discharge.The results showed that the total discharge of phosphorus from the surface drainage of farmland in Taihu-Lake region was 440.4 t/a in a raing year as 1987, and 299.9 t/a in a dry year as 1988. |
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