Three spring soybean [Glycine max (L..) Merr] cultivars (high-protein cultivar NE42, middle-protein cultivar SN14 and low-protein cultivar NE163) were used as materials in the experiment. In pots, studying on the characteristics of protein and its subunit content accumulation in relation with dynamic change of nitrogen accumulation and translocation of different genotypes of soybean, which illustrated the acceleration effects and quantitative effect of measure from the molecular standard on this...