1油菜菌核病的防治油菜菌核病俗称麻秆、白秆等,不仅影响产量,而且使油菜品质、含油率下降。其症状是:先在近地叶柄或叶片出现病斑,病斑初期为圆形、褐色、水渍状,后转为青褐色,茎基部病斑由褐色变白色,有光泽,高湿时组织软腐,表现有棉絮状白霉,干燥后破裂如麻丝。受病茎秆易开裂、折断、倒状,髓部变为空心,有白霉 1 rape sclerotinosa prevention and control rape Sclerotinomycetes commonly known as burlap, white stalk, not only affect the yield, but also rapeseed quality, oil content decreased. The symptoms are: the first petioles or leaves in the ground near the spot, the initial lesion was round, brown, water-like, turned to a greenish brown, the base of the lesion from brown to white, shiny, wet tissue Soft rot, the performance of cotton-like white mold, dried and ruptured, such as hemp. Sick stem easily cracked, broken, inverted, pith into hollow, white mold