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除虫菊(Chrysanthemum ciuerariaefoliumVis.)是菊科的多年生草本植物,它的花朵中含有0.6—1.3％的除虫菊素,这种菊素可引起多种农业害虫麻痹中毒死亡。用除虫菊干花粉碎过120—150目筛,用1:300的比例加水,并酌加肥皂水做成悬浮液,可用于防治果树,蔬菜和茶叶的害虫。它使用安全,不污染环境,作物产品无残毒,对人畜无害,因此,是十分理想的植物农药。用除虫菊粉50％、榆树皮粉48％、萘酚1％,色料1％配比,再加入适当的水调成糊状、制做蚊香,具有明显的灭蚊效果。引种历史除虫菊原产南斯拉夫,我国引种除虫菊大约是在1919年,上海化学工业社从
Chrysanthemum ciuerariaefolium Vis. Is a perennial herb of Compositae. Its flowers contain 0.6-1.3% of pyrethrin, which causes paralytic death of many agricultural pests. It is used for controlling pests of fruit trees, vegetables and tea by using 120 to 150 mesh sieve with dried flower of pyrethrum, adding water in a ratio of 1: 300 and making it into a suspension with soapy water. It is safe to use and does not pollute the environment. The crop products are harmless to humans and animals, therefore, they are ideal plant pesticides. With 50% of pyrethrum, elm bark powder 48%, naphthol 1%, pigment 1% ratio, then add the appropriate water into a paste, making mosquito coils, with significant anti-mosquito effect. Introduction history Pyrethrum native Yugoslavia, China introduced pyrethrum about 1919, Shanghai Chemical Industry Association from