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目的检测天然除虫菊酯的免疫毒性。To evaluate the immune toxicity of natural pyrethrum.
本品是拟除虫菊酯类杀虫剂。This article draws up the pyrethrum ester insecticide.
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广泛应用的有除虫菊、鱼藤和烟草等。Wider application of a pyrethrum , rotenone and tobacco, and so on.
目的研究血液灌流治疗重度菊酯类杀虫剂中毒的疗效。Objective To investigate effects of hemoperfusion on severe pyrethrum type pesticide poisoning.
作用于害虫的神经系统，如滴滴涕、对硫磷、呋喃丹、除虫菊酯等。Role in the nervous system of pests, such as DDT, parathion , carbofuran, esters, such as pyrethrum.
目的通过生物测试，观察天然除虫菊素盘式蚊香对淡色库蚊的药效。Objective To observe the efficacy of natural pyrethrum mosquito coil against Culex pipiens pallens by bioassay.
用除虫菊酯浸泡蚊帐防治疟疾及传疟媒介获得良好效果，可作处理流动人口疟疾疫点的重要措施。Pyrethrum impregnated bed nets were effective for control of malaria and it is an important measure for management of floating population.
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但国内外对于天然除虫菊素合成相关基因的研究很少，从而制约了利用基因工程技术提高除虫菊花中除虫菊素的含量。Improving the content of pyrethrins in pyrethrum through genetic engineering technology is restricted, for little is known about pyrethrins-related genes.
天然除虫菊酯虽然具有理想化学农药的一些特性，但光不稳定性和昂贵的价格限制其大面积使用。Pyrethrum possesses some ideal characteristics of environmental compatible chemical pesticide, however its photo lability and expensive price limit its broad use in the field.
用超临界CO2从除虫菊干花中萃取的除虫菊素，这种膏状物不能直接用来加工或深加工杀虫产品。Extracted pyrethrins from pyrethrum dried flower by super critical CO2 . is a paste called oleoresin which isn't suitable to formulate insecticidal products either use in household or crops.
用秋水仙素诱导除虫菊多倍体，获得多个染色体加倍遗传稳定的变异试管苗，进行试管苗快速繁殖并建立株系。The polyploids of Pyrethrum Cinerariifolium Trev were induced by colchicine solution. Many variation tube buds with doubled chromosome were obtained, then propagated the buds to gain the strains.