Abstract:

The research aimed to provide theoretical basis for improving soil fertility of the tableland tea garden in Yunnan province. The contents of chemical composition including major nutrients, minor nutrients, heavy metal elements and other chemical constituents were determined in the soil of tableland tea garden from main tea areas (Xishuangbanna, Puer, Lincang, Baoshan) of Yunnan by flame photometry, atomic absorption spectrometry and other methods. The results showed that the average contents of soil organic matter were 3.88%. The average contents of Available N, P and K were 133.55, 6.78, 83.56 mg/kg respectively. The average contents of effective Ca, Mg, Mn, Cu, Zn and B were 177.55, 64.39, 24.04, 11.35, 0.70, 0.68, 1.22 mg/kg respectively. The average contents of total Cr and Pb were 70.64, 83.6 mg/kg respectively. The contents of soil organic matters of the tableland tea garden were high, but the contents of the major nutrients and minor nutrients of the tableland tea garden were low. Therefore, it proposed to enhance using the fertilizer of major nutrients, while increasing the fertilizer of minor nutrients. The qualities of soil environment in the tableland tea garden were good on the whole，and it accorded with the soil environment quality standards of the non-polluted tea garden.