论文部分内容阅读
一、我省有机磷农药混用的追溯七十年代初期我省叶蝉、稻瘟病为害严重,对口农药马拉硫磷、稻瘟净供不应求。浙江省嵊县等地农资公司辅导员(技术员)在实践中发现稻瘟净对叶蝉有一定的防治效果,为了节约农药,达到稻瘟病、叶蝉病虫兼治,试验将40%稻瘟净乳剂和50%马拉硫磷乳剂(商品,下同)各减量混合喷施,取得了防治叶蝉、稻瘟病的理想效果,这是我省较早的有机磷农药混合配方。后来随着叶蝉对马拉硫磷抗性的增加及褐稻虱为害加重,稻马合剂(1:
First, the province of organic phosphorus pesticide retrospective retrospective In the early 1970s, our province leafhopper, rice blast serious harm counterparts malathion, rice blast in short supply. Sheng County, Zhejiang Province and other agricultural companies counselors (technicians) in practice found that rice blast net leafhopper have some control effect, in order to save pesticides to achieve rice blast, leafhopper pest and disease control, the test will be 40% The net emulsion and the 50% malathion emulsion (commodity, the same below) were sprayed at various decrements to achieve the desired effect of preventing leafhoppers and rice blast, which is the earlier formula of organophosphorus pesticide mixture in our province. Later, with the increased leafhopper resistance to malathion and brown planthopper damage worse, rice and horse mixture (1: