...氮磷积累量；基质脲酶；基质磷酸酶 [gap=1717]Keywords：root system vigor；peroxide enzyme；growing biomass quantity；N and P accumulation quantity；matrix Urease；matrix phosphatase ..
The absorptionandaccumulationofNitrogen, Phosphorous were the highest at the period from pod-setting to pod-filling, account for 47.74% and 44.00% of totalrespectively.