Abstract:The yearly biomass, contents of nitrogen, phosphorus and potassium and their accumulation at different parts of Zizvphus jujube tree were studied. The trees are cultivated about 6 years under field condition. The results show that the cumulative amounts of dry matter, N, P and K in all organs are increased with the growth and development of Chinese jujube, especially from the fruit expanding stage to harvest stage. The yearly biomass increase is about 3908.5 g/plant. Total nitrogen, phosphorus and potassium absorption rates are 70.5, 19.9 and 99.3 g/plant in one year of the growing period , in which 55.6%、68.1% and 56.1% are absorbed during the harvest stage. To attain 1000 kg economic yield, Zizvphus jujube tree should uptake N 14.1, P 4.5 and K 19.9 kg.