Abstract:

The soil fertility was tested and fertilization level was mastered in Tie-guanyin garden. The object was to provide scientific basis for rational fertilization and soil improvement. The contents of Organic matter, N, P, K and pH of soil Tie-guanyin tea garden soil, which fertilized after autumn plucked at 8 main productive towns were analyzed. Results showed that the mean of mountain soil pH was 4.69, the soil pH of tea garden was between 3.37~4.94, the phenomena of tea garden soil acidification were serious. The difference was very significant. The contents of soil organic matter were rich overall, ranged from 1.22% to 5.39% of surface soil, mean was 2.61%. 87.5% organic matter contents higher than the level of soil fertility grade Ⅰ. The contents of nitrogen were in an appropriate amount. The contents of total nitrogen and alkali-hydrolysable nitrogen of 91.67% surface soil reached the level Ⅰ. The contents of available phosphorus were high. The contents of available phosphorus of the surface soil at Xianghua Xiangdi were 464.8 mg/kg, exceeding the critical value 60 mg/kg. The contents of potassium were imbalanced. The contents of available potassium were low of subsoil generally. The content of total potassium was high in Gande-Wujia, the difference was very significant with the other 7 towns. Available potassium was seriously short in Xiping Songyan and Longjuan Huaxiangyuan .