本文对不同抗性亲本所配制的组合后代,采用早期世代混合株系接种鉴定、稳定世代分株系接种鉴定的方法进行选育,得到了优良抗病品系。研究表明:抗病育种关键,是亲本的抗性、丰产性水平。并明确了(SMV)三株系群的致病程度,及对大豆若干产量性状和籽粒斑驳的影响程度。 In this paper, the parents of different combinations of the preparation of the combination of progeny hybrid early generations of hybrid identification, stable generations of inoculation identification of breeding methods, obtained excellent resistance strains. Studies have shown that the key to disease resistance breeding is the level of resistance and high yield of parents. The pathogenicity of three strains of SMV and the degree of influence on some yield characters and grain mottle of soybean were also determined.