Annual biomass and nutrient accumulation of Korla fragrant pear

The annual biomass and nutrient absorption of Korla fragrant pear tree were studied using 6 year old Korla fragrant pear tree. The results show that the cumulative amounts of dry matter, N, P and K per single plant are increased with the growth and development of Korla fragrant pear, and compared with the early bud stage, which are increased by 5804.92 g, 75.71 g, 27.11 g and 103.10 g, respectively. The accumulation contents and accumulation rate are the biggest at the fruit expanding stage, which account for 53.52%, 22.93%, 44.04% and 62.66% respectively.To attain 1000 kg economic yield, Korla fragrant pear trees should uptake N 7.52 kg, P 4.29 kg and K 6.05 kg.