一、发病规律及症状病株上部叶片显深或浅绿花叶.茎杆上中部先后出现暗绿色下陷短条纹、深褐色下陷油渍状坏死条斑.病茎质脆易断,皮层和髓部呈褐色.病株果实全部畸形腐烂,果面布不规则褐色下陷油渍状坏死斑.病情严重时,病株萎黄枯死. 条斑病毒病是由黄瓜花叶病毒、烟草花叶病毒或马铃薯??病毒混合侵染的.病毒可 First, the incidence of disease and symptoms The upper leaves of diseased plants were significantly darker or light green leaves.The stems on the middle of the dark green subsidence has emerged short stripes, dark brown sagged streaky stain necrosis stump crisp easily broken cortex and pith Brown. Strain all the fruit deformity decay, irregular brown fruit surface subsidence oil-like brown necrosis spot necrosis. In severe cases, the diseased plants withered yellow dead. Streak virus disease is cucumber mosaic virus, tobacco mosaic virus or potato ?? Virus mixed infection. Virus can