Tobacco readily accumulates cadmium (Cd), an unnecessary and poisonous element. A total of 107 soil and tobacco leaf samples were collected from South China, to clarify the quantitative relationship between soil properties and Cd content in tobacco leaves. The results showed that 86.9% of the total sampling points had soil cadmium in excess of standard value, and the ratio of active Cd content to total soil Cd content was 24.0%. The enrichment factor of tobacco Cd was 3.43. There was a significant positive correlation between Cd concentration in tobacco leaves and soil Cd content. Soil pH, organic matter and cation exchange amount were negatively correlated with the Cd enrichment factor of tobacco. This present study has provided a regression model of tobacco Cd content based on soil factors, which could accurately predict Cd content in different parts of tobacco.

烟草很容易积累镉 (Cd)，这是一种不必要的有毒元素。为阐明土壤性质与烟叶Cd含量之间的定量关系，在华南地区采集了107个土壤和烟叶样品。结果显示，86.9%的采样点土壤镉超标，活性镉含量占土壤镉总含量的比例为24.0%。烟草Cd富集系数为3.43。烟叶Cd浓度与土壤Cd含量呈显着正相关。土壤pH、有机质和阳离子交换量与烟草Cd富集因子呈负相关。本研究提供了基于土壤因子的烟草Cd含量回归模型，可以准确预测烟草不同部位的Cd含量。