棉花枯萎病和黄萎病是我省棉花生产上两大毁灭性病害。五十年代我省黄萎病只在个别县零星发生,六十年代初才传进枯萎病。但由于这两种病害传播途径广,病菌习性顽固,蔓延成灾快,防治难,目前全省各产棉区均有不同程度的发生。潍坊地区发病最早,发生面积较大,一般减产10％左右, Fusarium wilt and Verticillium wilt are the two most devastating diseases in cotton production in our province. In the 1950s, Verticillium wilt in our province only sporadically occurred in individual counties and was only transmitted to wilt disease in the early 1960s. However, due to the wide spread of these two diseases, pathogenic bacteria stubborn, spread disaster disaster, prevention and treatment difficult, at present the province’s cotton producing areas have varying degrees of occurrence. The earliest incidence of Weifang area, occurred larger area, the general reduction of about 10%