关键词: 综合因子, 分析, 土壤, 重金属

Abstract: The contents of heavy metals:As, Cd, Cr, Cu, Hg, Pb, Zn, Ni etc in 69 soil samples of the tea garden in 16 counties and municipalities in northeast of Sichuan province are evaluated with index of single factor and compositive factors. The results show that:at the present, these soils are suitable to planting tea tree and to producing tea that suit health standard based on monitoring standard of environment quality. Based on standard of heavy metals content in soil of organic tea garden, Pb, Cu, Zn, Ni etc in soils of tea garden in northeast of Sichuan province are in standard, but some of soil samples are over standard for Cd, Hg, As and Cr, and proportion of over standard in soil samples are 85.51%、63.77%、37.68% and 11.59% respectively based on single factor index, and are 43.48% based on compositive factors.

Key words: compositive factor, evaluation, soils, heavy metals