杀虫的

Strains containing cry1 genes were the most abundant in our collection (66%), and 21 different cry1-type gene combinations were found. Furthermore, several novel holotype cry genes were found and the full-length sequences of 3 novel cry genes were designated as cry54Aa1, cry30Fa1, and cry30Ga1 by B.

PCR-RFLP鉴定结果表明：此地区的苏云金芽胞杆菌主要含有cry1，cry2，cry3，cry4/10，cry9，cry30和 cry40 等7种cry基因类型；含cry1基因的菌株最丰富，共有21种不同cry1型基因组合；从中发现了新型模式基因，并采用Tail-PCR技术获得了其中3个基因的全长序列，被国际苏云金芽胞杆菌杀虫晶体蛋白基因命名委员会命名为cry54Aa1、cry30Fa1和cry30Ga1。

To prevent mulberry leaves from being polluted by its spraying in mixed farming area of rice and mulberries, it is preferred to apply granulated pesticide instead of liquid one to rice fields.

农药杀虫双对家蚕的毒性较大，为防止对桑叶的污染，在稻、桑混栽地区将稻田喷施的水剂改为粒剂施用为宜。

Last May a study published by Cornell University showed that pollen from some strains of corn with built-in pesticides can kill the larva of the Monarch butterfly, a pest by nobody's standards.

去年五月，康奈尔大学的一份调查报告显示，含有杀虫功能的玉米花粉能杀死黑脉金斑蝶的幼虫，而任何人都不会把蝴蝶当成害虫。

Their biological activity is generally attributable to inhibition of NADH: ubiquinone oxidoreductase activity and thereby mitochondrial respiration.

这一类化合物之所以具有很好的杀虫活性，是由于对还原型烟酰胺腺嘌呤二核甘酸的抑制作用而阻断了线粒体的呼吸。

Ten insecticidal constituents of T. wilfordii were isolated by means of phytochemistry combined with bioassay method.

采用生物活性追踪和化学分离相结合的方法，对雷公藤根皮中的杀虫活性成分进行了系统的研究。

Natural Insecticidal Pyrethrum CHENG Xuan-Sheng1, ZHAO Ping2, YU Yong3 (1Jiangsu Pesticide Research Institute, Nanjing 210036, China; 2Shenyang Research Institute of Chemical Industry, Shenyang 110021, China; 3Shengyang BMD Chemical Company, Shenyang 110021, China) Abstract: This paper reviews research pertaining to natural insecticidal pyrethrum, including the active ingredient in the pyrethrum flower, manufacture, formulation, toxicity, and research on control of agriculturally important insect pests.

天然除虫菊程暄生1，赵平2，于涌3 (1江苏省农药研究所，南京210036；2沈阳化工研究院，沈阳 110021；3沈阳博美达化学有限公司，沈阳110021)摘要综述了天然除虫菊的相关研究，包括除虫菊花的杀虫活性成分、制剂与加工、毒性及在农业害虫防治方面的研究。

That Rachel Carson's 1962 book Silent Spring was one of the chief sources of inspiration for the development of nontoxic pesticides.

参考译文：Rachel Carson于1962年出版的《沉静的春天》一书可能是发展无毒杀虫这一灵感的主要源泉之一。

We have developed new types of pesticide with broad spectrum,high efficiencyand low poison.At present,we have six TC including insecticide,weedicide,bactericide and four series intermediates used in medicine,pesticide and dyestuff.

大力发展广谱、高效、低毒的新型农药，目前已形成前后一体化产品体制，包括杀虫、除草、杀菌六大原药以及用于医药、农药和染料的四大系列的中间体产品。

Introducing into to wheat the gna gene that encodingsnowdrop lectin(Galanthus nivalis agglutinin;GNA),a toxic protein to Homoptera,or cryIA gene that encoding Bacillus thuringiensis insecticidal protein forLepidopteraby genetic transformation will produce new germplasm that maybe produce resistant to somekinds of pests.

利用转基因技术，将对同翅目昆虫具有抗性的雪花莲凝集素基因gna和对鳞翅目昆虫具有抗性的苏云金芽孢杆菌杀虫蛋白基因cryIA导入小麦，极有可能获得对某些害虫具有一定抗性的小麦新种质。

In the insecticidal test, compounds 2-29 exhibited the most potent effect against Plutella xylostella and a moderate effect against Heliothis virescens.

在农业常见害虫的杀虫活性测试中，化合物2-29几乎完全抑制小菜蛾的生长，对 Heliothis virescens也有中等强度的抑制效果。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。