甘薯病毒是一种常年发生的系统性病害。由于甘薯是无性繁殖作物，一旦感染了病毒，其体内的病毒会不断积累，使病情逐年加重，最终导致甘薯品种种性退化，产量和品质同步下降，大面积生产上，常年一般团甘薯病毒病减产叨叽以上。甘薯病毒种类复杂，已报道的有10多种，我国主要 Sweet potato virus is a perennial systemic disease. Because sweet potato is asexual reproduction of crops, once infected with the virus, the virus will continue to accumulate in the body, so that the disease increased year by year, eventually led to degeneration of sweet potato variety, yield and quality decline, the large-scale production, perennial general sweet potato virus disease Cut more than grumble. Sweet potato virus is a complex species that has been reported for more than 10 species in our country