大豆花叶病(SMV)所结种子有褐斑粒也有非褐斑粒。它们的带毒率是否有差异关系到在生产上如何选用无毒种子、杜绝病毒来源与传播的一项基本措施。本试验通过播种在同一地块所收褐斑粒种子和非褐斑粒种子观察其自然出苗情况及病苗率,验证带毒率是否有差异,为在生产上选种、调种提供依据。 Soybean mosaic disease (SMV) seed seeded have brown spots and non-brown spots. Whether they have different rates of virulence relates to the production of how to use non-toxic seeds to eliminate the source of the virus and spread of a basic measure. In this experiment, we observed the natural emergence and the rate of disease-free seedlings by seeding the seeds of brown spot and non-brown spots in the same plots to verify whether there was a difference in the virulence rate, which provided the basis for selection and breeding in production.