- 更多网络例句与除虫菊相关的网络例句 [注：此内容来源于网络，仅供参考]
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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。
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In an effort to elucidate the mechanisms of the resistance,our laboratory has previously identified and reported a number of genes associated with resistance to a widely used pyrethroid deltamethrin,including a Culex chymotrypsin gene.
为阐明媒介昆虫对拟除虫菊酯的抗性机制，本实验室先前已经鉴别并报道了一系列拟除虫菊酯代表种溴氰菊酯抗性相关基因，其中包括糜蛋白酶基因。
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Supercritical carbon dioxide was used to extract pyrethrin from pyrethrum flowers.
采用超临界二氧化碳萃取除虫菊花中的有效成分除虫菊酯，设计了一个突然降压的过程，使除虫菊花的细胞壁破碎，减少过程的传质阻力。
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Almost all the existent pyrethrum esters are prepared from the pyrethrinI and pyrethrin II almost has never been used.
现有的拟除虫菊酯品种，基本源出于除虫菊酯Ⅰ，而除虫菊酯Ⅱ中的第二菊酸及其酯却几乎未被利用过。
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People in natural Pyrethrum ester chemical structure on the basis of a variety of pyrethroid insecticides, but the validity of these pesticide residues are short and easy solutions for optical characteristics.
人们在天然除虫菊酯化学结构研究的基础上合成出了多种拟除虫菊酯杀虫剂，但这些杀虫剂均有残效期短和极易光解的特点。
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The effect of ultrasound on the degradation of pyrethrins and the velocity of extraction are studied through the supercritical carbon dioxide extraction of pyrethrins from pyrethrum.
本文以除虫菊花中的除虫菊酯萃取为对象，研究用超临界CO2对其萃取时，施加超声场对萃取物降解及萃取速率的影响。
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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。
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Plant tissue and cell culture of pyrethrum cinerariifolium Trev.
在活性追踪指导下，对除虫菊细胞培养物中活性物质生物合成进行研究，以为今后通过植物细胞培养途径产生除虫菊素提供实验室小试的理论依据，提高通过植物细胞培养途径产业化生产除虫菊素的经济和技术可行性。
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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。
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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。
- 更多网络解释与除虫菊相关的网络解释 [注：此内容来源于网络，仅供参考]
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pyrethrin：除虫菊酯
蚊香中通常含有0.3%-0.4%(重量百分比)的除虫菊酯(pyrethrin)杀虫剂,以及相当量的无火焰熏燃物质. 虽然来自植物的除虫菊酯对人相对无毒,但是占其99%的附加成分包括粘合剂、填料和染料等的燃烧所引起的健康效应还不清楚,
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pyrethrin：除虫菊素
后来许多科学家又经过40多年的研究,才明确除虫菊花中含有除虫菊素(Pyrethrin)Ⅰ和Ⅱ、瓜叶(除虫)菊素(Cinerin)Ⅰ和Ⅱ、茉莉(除虫)菊素(Jasmolin)Ⅰ和Ⅱ等六种杀虫有效成分(表1),总称为天然除虫菊素,以除虫菊素Ⅰ和Ⅱ含量最高,杀虫活性最高.
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pyrethrin：除虫菊脂
Pyrenone 醚菊合剂 | pyrethrin 除虫菊脂 | pyrethrum powder 除虫菊粉
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II","pyrethrin II：除虫菊素
,"194","除虫菊素I","pyrethrin I " | ,"195","除虫菊素II","pyrethrin II " | ,"196","瓜叶菊素I","cinerin I"
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I pyrethrin I：除虫菊素
除虫菊素 pyrethrins | 除虫菊素I pyrethrin I | 除虫脲 diflubenzuron
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pyrethrum：除虫菊
除虫菊(pyrethrum)是菊科菊属类的多年生草本植物,原产于中东地区,其后在日本、非洲、南美等广为栽培并形成产业,于1987年左右成功引进我国. 除虫菊酯(结构式如右图所示)是除虫菊中的主要杀虫成分,因其对蚊、蝇、虱、甲虫、臭虫、蛾等害虫有驱杀作用而得名. 天然除虫菊酯是由六
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pyrethrum：除虫菊属
这类植物过去被视为单独的一属--除虫菊属(Pyrethrum). 特别是从除虫菊花蕊中提炼出来的除虫菊脂价值更高,用它制成的除虫菊脂类农药,药效大,无残毒,是蚜虫、蚊蝇、菜青、棉铃等害虫的死敌. 用除虫菊叶做的蚊香,可以杀蚊驱蝇,
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pyrethrum：除虫菊(天然除虫菊)
Prohexadione calcium 调环酸钙盐 | Pyrethrum 除虫菊(天然除虫菊) | Pyributicarb 稗草畏
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pyrethrum：除虫菊素
1.24 天然除虫菊酯pyrethrins | 1.25 除虫菊素pyrethrum | ---2.1 马拉硫磷malathion
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pyrethrum powder：除虫菊粉
pyrethrin 除虫菊脂 | pyrethrum powder 除虫菊粉 | pyrethrum 除虫菊