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除虫菊系多年生草本植物,因其体内含有一种既对人、畜无害,又能驱杀蚊、蝇、虱、臭虫、跳蚤和蚜虫、红蜘蛛、谷象、米象等多种农作物害虫以及治疗人畜癣病的理想物质——除虫菊素而身价倍增。 除虫菊适于在温和湿润的气候里生长,较耐低温,但怕霜冻,凡土层深厚、排水良好的中性或微碱性砂质土壤均可引种栽培,忌连作。 除虫菊有白花种和红花种两个品种,我国栽培的大都是白花种。可利用种子繁殖,也可进行分株繁殖。种子繁殖可采取春播或秋播。秋播在8月下旬至9月上旬播干籽。春播在3
Pyrethrum perennial herb, because of its body contains a not only harmless to humans and animals, but also to kill mosquitoes, flies, lice, bugs and fleas and aphids, spider moths, grain elephant and other crop pests and The ideal material for the treatment of human and animal diseases - pyrethrins and worth doubled. Pyrethrum suitable for growth in a mild and humid climate, more resistant to low temperature, but afraid of frost, where deep soil, well drained neutral or slightly alkaline sandy soil can be introduced and cultivated, avoid continuous cropping. Pyrethrum white flowers and safflower species two varieties, most of our cultivation of white flowers species. Seed breeding can be used, but also for breeding ramets. Seed propagation can be sowed in spring or autumn. Autumn sowing broadcasts seed from late August to early September. Spring sow in 3