The effect of different phosphorus application rate on soybean biomass accumulation and distribution were analyzed by pot experiment in soil under high phosphorus-efficient and low phosphorus-efficient genotypes. The stem and leave biomass of high phosphorus efficiency genotypes increased with the increase of phosphorus application and reached peak values at P640 of phosphorus treatment,and the biomass of stems and leaves still increased for low phosphorus efficiency genotypes. The root cap ratio of high ph...