杀虫剂的

The author also expected that the era of multiple use of single fumigant would be replaced by those fumigants for special of a certain field use gradually.

由于它具有高效、穿透性强、快速、杀虫谱广等优点，总体来说，被认为是和磷化氢一样的气体杀虫剂的两大支柱之一。

Objective To investigate the resistance of the natural housefly population to the chemical insecticides and their natural attenuation trend in the laboratory environment, and to provide the rational for the management of the resistance.

目的 研究家蝇自然种群对化学杀虫剂的抗药性现状及其在实验室环境下抗性自然衰减的变化趋势，为抗性治理提供理论依据。

The Company is a professional environmental health insecticide research and development, production, sales and service for the integrated enterprise.

本公司是集专业环境卫生杀虫剂的研发、生产、销售、服务为一体的综合性企业。

In official recommendations, the range and quantity of insecticide used each season have been limited to what is needed

每季节杀虫剂的使用范围和使用量由官方规定，以保证限制在所需要的范围内。

Methoxychlor,salithion,phoxim,triazophos,Lorsban,tirchlorfon,Marshall,RH5849,chlorfluazuron,cyromazine,imidacloprid and Regentfor controlling rice water weevil using conventional spray method of the recommend concentration,was tested.

按农药田间药效试验准则试验了 12种杀虫剂的常规用量之常量喷雾防治稻水象甲的田间药效。

Once established, buffalograss requires miniscule amounts of water, fertilizer, and pesticides.

建植后的野牛草对水、肥和杀虫剂的要求非常低。

It is very important to guide high output of DpCPV multiplication.

研究结果对DpCPV杀虫剂的高产增殖有很强的指导意义。

Objective To detect the resistance of Musca domestica in various habitats in early phase with the method of acetylcholinesterase. Methods The traditional assay method and acetylcholinesterase were used to detect the resistance of M.

目的 应用一种家蝇抗药性早期检测方法即乙酰胆碱酯酶法，了解南昌市不同生境家蝇对常用的有机磷和氨基甲酸酯类杀虫剂的抗性现状及其发展趋势。

Since 1992 a vigorous, pesticide-tolerant strain of Panama disease has been wiping out bananas—including previously resistant crops of Cavendish—in Southeast Asia.

自1992年以来，抗杀虫剂的巴拿马病卷土重来，横扫了东南亚所有香蕉，包括之前对此免疫的Cavendish植株。

In the last 50 years, there has been a 33 fold increase in the amount of pesticide used in farming.

在过去的50年里，农业上使用杀虫剂的数量增长了33倍。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。