油菜是我省主要油料作物之一 ,也是唯一的秋冬播油料作物。近几年来 ,油菜菌核病的发生 ,已经影响到油菜的产量和品质 ,成为油菜持续增产的限制因子。抓好菌核病的防治 ,已是夺取油菜高产的一项技术措施。油菜菌核病发生 ,有以下几个原因 :一是菌核残留量多 ,这是由于连作所致 Rape is one of the major oilseed crops in our province and also the only sown crop in autumn and winter. In recent years, the occurrence of sclerotinia sclerotiorum has affected the yield and quality of rape and has become a limiting factor for the continued increase of rapeseed production. Do a good job in the prevention and treatment of sclerotinia, is to win high yield rape a technical measure. Sclerotinia sclerotiorum occurs, there are several reasons: First, sclerotinia and more, which is due to continuous cropping