青枯病是一种寄主范围非常广泛,危害严重,损失最大的植物病原细菌之一.可感染35个科,200多种植物。主要危害番茄、花生、茄子、马铃薯、烟草、辣椒、芝麻、大豆、蚕豆、向日葵、香蕉等植物和一些杂草。据最近报道,在我国还危害桑树、油橄榄.花生青枯病是我国花生生产中的重要病害之一,遍及南方广大的花生产区和北方部分产区.据对四川省花生产区的调 Bacterial wilt is one kind of plant pathogenic bacteria with wide range of host, serious harm and loss, which can infect 35 families and 200 kinds of plants. Mainly harmful to tomatoes, peanuts, eggplant, potatoes, tobacco, peppers, sesame, soybeans, broad beans, sunflowers, bananas and other plants and some weeds. It has recently been reported that mulberry and olive are also harmed in our country .Plant peanut bacterial wilt is one of the most important peanut diseases in China, spreading over the vast areas of southern flower-growing and northern part of China.