对烟台地区从1974年流行起来的土传小麦花叶病进行了调查研究。寄主作物为小麦、大麦和黑麦。麦株是在秋苗期被侵染,至返青时才显现症状,病症分黄叶和花叶两个发展阶段。传播途径为病土。病毒质粒主要为直棒状,有明显的空心结构,其长度在60～360nm(高峰在60～140nm),直径为12～20nm。发病与品种、土质、肥力等因素有关。采取“以抗、耐病品种为主的农业栽培综合防治措施”,可控制危害。 A survey was conducted on soil-borne wheat mosaic disease, which became popular in Yantai since 1974. Host crops are wheat, barley and rye. Wheat plants were infested in the fall seedlings, until the return of youth showed symptoms, symptoms of yellow leaves and mosaic two stages of development. The route of transmission is soil. The virus plasmids are mainly straight rods and have a hollow structure with a length of 60-360 nm (peak at 60-140 nm) and a diameter of 12-20 nm. Incidence and variety, soil, fertility and other factors. Adopting the “comprehensive prevention and control measures for agricultural cultivation with resistance and disease-resistant varieties” to control hazards.