一、前言花生青枯病(Pseudomonas sola—nacearum E.F.Smith)是我区花生产区的一个严重病害,历年都有不同程度的发生,特别是轮作周期较短的早作区,发病面积占播种面积40％以上,一般发病率10％左右,造成缺苗减产,严重病田死苗率达50％以上,甚至失收。例如1979年鹿寨县雒容公 I. Introduction Pseudomonas sola-nacearum EFSmith is a serious disease in the flower-producing area of ​​our country and has different degrees of occurrence over the years, especially the early cropping area with short rotation period, the area of ​​disease accounted for the sown area 40% or more, the general incidence of about 10%, resulting in reduced production of seedlings, severe disease seedlings rate of 50% or more, and even lost. For example, Luzhai County in 1979 Rong public