在农业学大寨、普及大寨县的伟大革命群众运动推动下,为了进一步促进生产的发展,确保农林生产丰收,寻求安全、经济有效的防治病虫害的新方法、新途径,我们开展了应用植物碱防治害虫的探索.多数植物碱能有抑制细胞分裂,促使细胞衰老和杀死生殖细胞的作用,1974年美国已报道喜树碱对家蝇是一种很高效的 Under the impetus of the Great Revolution in Massachusetts and the popularization of Dazhai County, in order to further promote the development of production, ensure the harvest of agriculture and forestry and seek for new and safe and economical ways to prevent pests and diseases, we have carried out the application of plants Alkali pest control exploration. Most plant alkaloids can inhibit cell division, to promote cell senescence and kill germ cells, the United States in 1974 reported that camptothecin is a very efficient housefly