论文部分内容阅读
我市油菜常年种植面积在15万公顷左右,菌核病是我市油菜上的主要病害之一,近年来在我市连续暴发,产量损失严重。据调查,用药品种不同,其防治效果差异显著,特别是多年来本市长期、单一使用多菌灵及其混配剂防治油菜菌核病,使菌核病菌对多菌灵及其复配剂普遍产生了抗性,而且表现为高抗水平,每666.7m~2用25%多菌灵 WP200g,适期用药一次,其防病效果只有20%～30%,为此,通州市植保站在抗性油菜菌核病的新药剂及其应用技术方面进行了研究,筛选和开发出了对抗性油菜菌
Perennial planting area of our city about 150,000 hectares, sclerotinia is one of the major diseases on our city rape, continuous outbreak in our city in recent years, the output loss is serious. According to the survey, different drug varieties, the prevention and treatment of significant differences, especially over the years the city’s long-term, single use of carbendazim and its mixture to prevent sclerotinia sclerotinia so that sclerotinia carbendazim and its compound Generally have a resistance, but also showed a high level of resistance, every 666.7m ~ 2 with 25% carbendazim WP200g, medication once, its disease control effect is only 20% to 30%, therefore, Tongzhou Plant Protection Station Resistant rape sclerotinia and its application of new pharmaceutical agents were studied, screening and development of resistant rapeseed