油菜菌核病是我国长江流域油菜主产区重要的常发性病害。近年来 ,随着农业生产结构的调整 ,油菜种植面积扩大 ,菌核病的发生呈上升趋势。在病害防治中 ,由于多菌灵及其复配制剂的长期单一使用 ,导致病菌抗药性上升 ,防治效果下降 ,用药量加大。为开发和推广应用新的防治菌核病 Sclerotinia sclerotiorum is an important and frequent disease in the main producing area of ​​the Yangtze River rape in China. In recent years, with the adjustment of agricultural production structure, rapeseed area expanded, the incidence of sclerotinia is on the rise. In the disease prevention and control, due to the long-term single use of carbendazim and its compounded formulations, leading to increased resistance of bacteria, prevention and control decreased, the dosage increased. To develop and promote the application of new sclerotinia