Evaluation of Soil Nutrient Depletion in Phyllostachys heterocycla cv. pubescens Stand in Songyang

Determinations were conducted on pH, organic substances content, total N, available N, total P, available P, and available K of soil at 0-30cm from 144 sample plots of Phyllostachys heterocycla cv. pubescens stand in 18 villages of 5 towns in Songyang, Zhejiang province from December of 2014 to January of 2015. The results showed that pH ranged 3.90-5.60, while pH 4.5-7.0 is suitable for bamboo growth, mean organic substances content was 42.94g/kg, total N 2.15g/kg, available N 159.79mg/kg, available P 2.27mg/kg, available K 61.28mg/kg. Evaluations demonstrated that soil N at bamboo stand in Songyang was too much, P and K was strongly depleted, and there were difference of soil nutrient depletion among different villages.