中文摘要：

为明确苏南地区Cd的污染状况，于2005年10月开展了对该地区水稻土及水稻子粒样品Cd的污染调查研究。结果表明，在被调查的174个土壤样品中，Cd含量范围为0．06～0．60mg·kg^-1，平均值和中间值分别为0．18μg·kg^-1和0．16μg·kg^-1，有9个土壤样品Cd含量超过中国土壤环境质量Ⅱ级标准，占总样品数的5．17％；而稻米Cd含量范围为0～121μg·kg^-1，平均值和中间值分别为25μg·kg^-1和17μg·kg^-1，未发现超标样品。DTPA、KNO3和CaCl2提取态土壤Cd含量与土壤Cd总量间均成正相关，与土壤PH成负相关。但土壤Cd总量与水稻子粒中Cd含量间无显著相关性。从结果来看，苏南地区的水稻田整体上尚未受到Cd的污染。

英文摘要：

In order to recognize Cd pollution in soils and rice grains in the south of Jiangsu province, a survey was conducted in Oct. 2005. The results showed that the Cd concentrations of paddy soils were in the range of 0.06～0.60 mg·kg^-1, and the mean and median value were 0.18 and 0.16 mg·kg^-1, respectively. There were nine soil samples with higher Cd than the Chinese Soil Environmental Quality Standard II （0.30 mg·kg^-1）, up to 5.17% of the total samples. The Cd concentrations of rice grains were from 2 to 121μg·kg^-1, and the mean and median values were 25 and 17 ~g. kg-1, respectively, and no rice grain sample had more Cd than the Chinese Food Hygiene Standard. The extracted soil Cd concentrations by DTPA,KNO3 and CaCl2 showed good negative correlation with soil pH and positive correlation with total soil Cd. Ac cording to these results, we can conclude that the soil in the south of Jiangsu province is not contaminated with Cd.