除虫菊是目前颇具推广价值的一种经济植物,其花、茎、叶含有大量除虫菊酯,广泛用于生产高效、低毒、广谱、无污染农药和制作蚊香、避蚊油、灭虱粉、灭害灵等卫生药物的原料。现在全球各国都在推广使用菊酯类农药,除虫菊需求量日益增加。除虫菊原产于欧洲和非洲,适应性较强,具有耐寒、耐高温、耐瘠薄、抗干旱、自杀虫、不需整枝打叉等特性。我国南北各地均可种植。它不择土壤,易种易管,宿根生长,一次播种可以连续收获7年以上。除虫菊用种子繁殖可春秋两季播种,如采用分根和插条繁殖法,种植期则酌情而定,一般春季3～5月,秋季8～10月。其栽培管理技术如下。(1)备好苗床苗床 Pyrethrum is a kind of economic plant with popularization value nowadays. Its flower, stem and leaf contain a large amount of pyrethrins, which are widely used in the production of high efficiency, low toxicity, broad spectrum, non-polluting pesticides and mosquito coils, mosquito repellent oil, Exterminators and other health drugs raw materials. Now all countries in the world are promoting the use of pyrethroid pesticides, pyrethrum demand increasing. Pyrethrum native to Europe and Africa, adaptable, with cold, heat, barren, drought-resistant, suicide insects, without pruning and other characteristics of pruning. Our country can be planted all over north and south. It does not select the soil, easy to plant easy to manage, perennial growth, a sowing can be harvested for more than 7 years. Pyrethrum seed breeding can spring and autumn seeding, such as the use of root and cuttings propagation method, the planting period is appropriate, the general spring 3 ~ May, autumn 8 ~ October. The cultivation and management techniques are as follows. (1) prepare seedbed seedbed