As an ecological purifying method , constructed wetlands are being applied to reduce pollutants in agricultural runoffs.

人工湿地在一定程度上可以对农田径流中的营养物质起拦截、去除功效.

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Results: The best purifying method was extracting with water, then adding alcohol to 70 %.

结果: 最佳纯化方法为水提醇沉法, 加入乙醇使含醇量达70%.

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