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- nereistoxin insecticides 沙蚕毒类杀虫剂
- Farm workers frequently come in contact with these insecticides. 农场工人常常接触这些杀虫剂。
- They observed how the crops reacted to these insecticides. 他们观察了庄稼对这些杀虫剂有什么反应。
- Resistance to insecticides has been apparent for many decades. 杀虫剂抗药性的出现已有数十年。
- Insecticides are widely used for controlling most insect pests. 杀虫剂广泛应用于防治大多数害虫。
- Systemic insecticides have shown particular promise. 内吸杀虫剂看来特别有效。
- Some insects develop cross-resistance to insecticides. 通过某些昆虫使交叉抗药性发展成为杀虫剂
- Both Aldrin and Chlordane are valuable insecticides. 艾氏剂和氯丹都是重要的杀虫剂。
- Controlling Effect of 6 Insecticides on Beet Barathra brassicae L. 6种杀虫剂对甜菜甘蓝夜蛾的防治效果。
- Effects of Three Botanical Insecticides Against Pieris rapae L. 三种植物性杀虫剂对菜青虫的毒效。
- Tell people why it is harmful to use insecticides and weed killers. （一）告诉人们使用杀虫剂，除草剂等化学药品是如何有害。
- The effects of 4 pyrethroids insecticides and methomyl are ... 4种拟除虫菊酯类杀虫剂及灭多威对该虫效果差。
- These insecticides include DDT a compound banned in the United States in 1972. 这些杀虫剂中包括DDT，一种自1972年起在美国被禁止使用的杀虫剂。
- A group of insecticides called chlorinated hydrocarbons illustrate this effect. 一大批称为氯化烃的杀虫剂阐明了这种放大作用。
- After spraying insecticides over the fields,the plane was seen buzzing off. 那架飞机喷完杀虫剂后，迅即飞去。
- The results showed that susceptibility of the borer to insecticide is in the order as follws: abamectin, fipronil > organophosphorus > carbamate > nereistoxin. 结果表明：二化螟对锐劲特、阿维菌素及三唑磷的敏感性较高，而对灭多威、杀虫单、杀虫双等敏感性低；
- Additional insecticides and larvicides are expected to reach Dili next week. 下周,预计将有更多的杀虫剂和杀幼虫剂运抵帝力。
- Effects of Several Insecticides against Laphygma exigua in Capsicum annuum L. 几种杀虫剂对甜椒甜菜夜蛾的防效试验。
- It is mainly pyrethrin (pyrethroid) with 50 percent in the insecticides. 它们多属拟除虫菊酯类农药,占总数的50%25;
- After spraying insecticides over the fields, the plane was seen buzzing off. 那架飞机喷完杀虫剂后，迅即飞去。
