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 .
热带亚洲鱼藤属的任何一种木质藤本植物，其根产出一种属于杀虫物质的鱼藤酮；该属有几种植物当地用作鱼毒和箭毒的原料。
Any of various usually woody vines of the genus derris of tropical Asia whose roots yield the insecticide rotenone; several are sources of native fish and arrow poisons.
因为人类生活在陆地上，所以不觉得鱼会有什么毒。
Because humans live on land, they don't think of fish as venomous.
垃圾里的毒毒死了鱼和植物并且污染了河流。
The poison in the waste killed fish and plants and polluted the river.
因此，可考虑将这些对鱼低毒的菊酯类农药作为防治水稻二化螟的高毒农药的替代药剂和抗性治理的轮换品种。
Therefore, these low fish-toxicity pyrethroids can be considered as candidates for replacing highly toxic organophosphates and resistance management for the rice striped stem borer.
结果表明：（1）河豚鱼的卵巢、肝脏、肠道中存在可产生TTX的细菌与放线菌，河豚鱼不同组织毒性的差异与其中产TTX菌株的产毒能力有关；
Our results demonstrated that (1) the distribution of TTX-producing strains and the bacterial production of TTX is close related with the toxicity of each tissue in puffer fish;
结果表明：（1）河豚鱼的卵巢、肝脏、肠道中存在可产生TTX的细菌与放线菌，河豚鱼不同组织毒性的差异与其中产TTX菌株的产毒能力有关；
Our results demonstrated that (1) the distribution of TTX-producing strains and the bacterial production of TTX is close related with the toxicity of each tissue in puffer fish;
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