查询词典 pyrethrum insecticide

Biological pesticide pyrethrum 50 per cent of the original drug and aerosol, sprayed the Treasury agents, natural pyrethrum mosquito coils, electric-mosquito coils and other agents of natural Pyrethrum ; Melia azedarach plight of 100 percent neem oil, 37 percent Melia azedarach EC, 0.3 percent Melia azedarach EC.

生物农药有50%除虫菊原药及气雾剂、喷务剂、天然除虫菊蚊香、电热蚊香片等天然除虫菊素制剂；苦楝素100%苦楝原油、37%苦楝乳油、0.3%苦楝乳油。

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。

On the other hand, 3(2)-fluoro-4-methoxyl methyl benzyl alcohol and 3(2)-fluoro-4-methyl benzyl alcohol are mixture and components of pyrethrum esters. Both of them have "mixture fluorine effect " and higher activity, lower drug resistance. As we know, the mixture benzyl alcohol containing fluorine is more easy to be synthesized than the single, so the cost of preparation is lower. We hope to apply it to molecule design of the new agriculture chemical. On the base of molecule design and structure-activity relationship research of pyrethric acid II and mixture of alcohol containing fluorine, we intend to get new pyrethrum ester that have higher activity and lower resistance.

另一方面，混合含氟对甲氧甲基苄醇和混合含氟对甲苄醇都是具有"混合氟效应"的高活性、低抗性的拟除虫菊酯醇组分，由于混合含氟醇的合成要比单一异构体的合成容易，成本较低，本文希望将其应用到新农药的分子设计中，用第二菊酸和一些含氟醇进行分子设计及进一步的构效关系的研究，筛选出一些高活性低抗性的拟除虫菊酯换代新品种。

On the other hand, 3(2)-fluoro-4-methoxyl methyl benzyl alcohol and 3(2)-fluoro-4-methyl benzyl alcohol are mixture and components of pyrethrum esters. Both of them have "mixture fluorine effect " and higher activity, lower drug resistance. As we know, the mixture benzyl alcohol containing fluorine is more easy to be synthesized than the single, so the cost of preparation is lower. We hope to apply it to molecule design of the new agriculture chemical. On the base of molecule design and structure-activity relationship research of pyrethric acid II and mixture of alcohol containing fluorine, we intend to get new pyrethrum ester that have higher activity and lower resistance.

另一方面，混合含氟对甲氧甲基苄醇和混合含氟对甲苄醇都是具有&混合氟效应&的高活性、低抗性的拟除虫菊酯醇组分，由于混合含氟醇的合成要比单一异构体的合成容易，成本较低，本文希望将其应用到新农药的分子设计中，用第二菊酸和一些含氟醇进行分子设计及进一步的构效关系的研究，筛选出一些高活性低抗性的拟除虫菊酯换代新品种。

The extract of pyrethrum could be used on the vegetable production for the substitute of synthetic insecticide.

结论］除虫菊提取物完全可以作为化学合成农药的替代品在蔬菜生产中使用。

There is a serious drug-resistant problem, resulted from a flood of usage of pyrethrum ester insecticide in long-term. In this paper, we analyzed the problem and put forward a project for trying solution it.

本文针对拟除虫菊酯类杀虫剂由于长期大量的使用而出现的严重抗药性问题进行了分析并提出一个试图解决该问题的方案。

And the compared efficacy test was executed between extract of pyrethrum and other several normal synthetic insecticide.

中提取天然除虫菊提取物，与常用的几种化学合成杀虫剂对比，进行药效试验。

An insecticide derived from a plant, e.g. pyrethrum.

3来源于植物的杀虫剂，例如除虫菊。

Coccineum, which are sources of the insecticide pyrethrum.

婆罗门参的根部可以食用，菊苣可以作为咖啡的替代品，莴苣，白花除虫菊以及红花除虫菊是很好的除虫剂的来源。

Objective To offer evidence of prevention of Musca domestica by exploring the principle of different insecticide and different time of Musca domestica fed with insecticide.

目的 探讨不同种类杀虫剂在不同施药方式下对家蝇的作用机制。

" I' d like to get some rough idea about music in the baroque ear, please."

请简要介绍一下巴罗克时期的音乐，好吗？

The results showed that the peak latency and pattern of SEPs elicited by electrical needling in LI-l1 and MP were similar. The amplitude of SEPs elicited by electrical needling in LI-l1 was higher than that of MP. There was no obvious SEPs generation when MM was electrical needling.

结果显示，电针刺激曲池穴和其邻近桡侧伸腕长肌运动点诱发性脑电波的波形和波峰时间是类似的，只是穴位的诱发性脑电波波幅较大，而电针刺激非穴位点并没有明显的诱发性脑电位。