无病毒大粒葡萄新品种──大红球我国目前生产上主栽的葡萄品种都是带有病毒的，这对其产量和质量都有不良影响。美国的葡萄栽培已实现无毒化，所以其鲜食和制干葡萄均产量高，品质优。八十年代中期我国从美国引进了一批无病毒葡萄良种，经过多年在东北、华北黄河故道各地... Virus-free large grapes new varieties ─ ─ red ball China’s current production of the main varieties are grafted with viruses, which have an adverse effect on the yield and quality. The United States has achieved non-toxic viticulture, so its fresh and dried grapes are high yield, excellent quality. In the mid-1980s, China introduced a number of virus-free grape varieties from the United States. After many years in the northeast and the ancient course of the Yellow River in North China,