近几年在刺槐上发现一种烂皮病,越冬后的刺槐不萌发或萌发后又枯萎。最初我们称为枯萎病;后来发现上部枝叶枯萎是由于主干上溃疡病斑所致,又叫溃疡病。在山东省部分地区对发展刺槐已构成严重威胁。省林业厅将此病列为省内检疫对象。但造成刺槐溃疡的病原有好几种。根据全省病虫普查采到的标本,经检查都有镰刀菌,曾定名为Fusarium sp.我们自1972年对此病进行了研究,认为它的真正病原是壳梭孢菌(Fusicoccum sp.), In recent years found in a black locust tree disease, after winter locust does not germinate or germination and then wilt. Initially we called wilt disease; later found that the upper branches and leaves withered due to the main ulcer lesion, also known as ulcer disease. In some parts of Shandong Province, the development of black locust has posed a serious threat. Provincial Forestry Department will be the province as a quarantine object. However, there are several kinds of pathogen causing locust ulcer. According to the province’s census census specimens collected, after examination have Fusarium, has been named Fusarium sp. We studied the disease since 1972, that its true pathogen is Fusobacterium (Fusicoccum sp.) ,