Methods The influencing factors to the effective duration of niclosamide in water and soil was investigated by the snail immersion method and the fish toxicity test .
方法用浸泡杀螺试验和鱼毒试验，观察氯硝柳胺在水体及土壤中持效时间及其影响因素。
Methods The influencing factors to the effective duration of niclosamide in water and soil was investigated by the snail immersion method and the fish toxicity test .
方法用浸泡杀螺试验和鱼毒试验，观察氯硝柳胺在水体及土壤中持效时间及其影响因素。
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