Study on Soil Quality under Phyllostachys heterocycla cv. pubescensForest with Fertilization

From 2014 to 2015, 1141 soil samples were collected from Phyllostachys heterocycla cv. pubescens forest with fertilization in 16 counties of Zhejiang province. Determinations were made on soil pH, organic matter, available potassium, available phosphorus and ammonium nitrogen. Analytic hierarchy process on soil quality of 16 counties resulted that good quality of soil occupied 68.75%, the best was in Changshan and Deqing with quality index of 1.0135 and 1.0936, the left (31.25%) was medium or below, especially in Longquan, Shaoxing and Longyou. Correlation analysis showed that soil ammonium nitrogen had significant correlation (R=0.943, P <0.01) with soil fertility quality index, as well as soil organic matter and available potassium content with soil fertility quality index , with R square of 0.640 (P<0.01) and 0.670 (P<0.01), indicating that nitrogen, organic matter and available potassium was important indicator for soil fertility quality. The determination demonstrated that mean pH value of the tested soil was 4.84, perhaps caused by fertilization with nitrogen.