魔芋在我市的长阳、兴山、五峰、秭归、远安等县市近几年发展较快。但是，随着种植面积的扩大，尤其是农民对魔芋病害防治措施不力，致使魔芋每年病害的发病率在３０％～５０％左右，重者绝收。 １魔芋主要病害发生危害特点 １．１软腐病：又名黑腐病，是由细菌Ｅｒｗｉｎｉａ Konjac in Changyang, Xingshan, Wufeng, Zigui, Yuanan and other cities and counties in recent years, rapid development. However, with the expansion of planting area, especially the poor farmers' prevention and cure of konjac diseases, the incidence of konjac disease is about 30% ~ 50% annually, and the crops are harvested. 1 konjac major disease hazard characteristics 1.1 soft rot: also known as black rot, is caused by the bacteria Erwinia