大米镉与土壤环境的相关性研究  

Study on the Correlation Between Cadmium in Rice and Soil Environment

作　　者：江籽琏 王永 任芳[1] 朱玲 杨孝容[1] Jiang Zilian;Wang Yong;Ren Fang;Zhu Ling;Yang Xiaorong(College of Chemistry,Leshan Normal University,Leshan 614000,China)

机构地区：[1]乐山师范学院化学学院,四川乐山614000

出　　处：《现代食品》2020年第12期170-172,共3页Modern Food

基　　金：2018年国家大学生创新创业训练计划项目(编号:201810649051)。

摘　　要：为研究大米中镉含量与土壤环境的相关性,本文测定了大米中的镉含量和水稻收获时对应的土壤pH、有机质和镉含量。结果表明,大米和土壤的镉含量分别为0.051~0.259 mg·kg^-1和0.288~1.208 mg·kg^-1;土壤有机质13.6~33.0 g·kg^-1,pH 5.5~7.8。大米中镉含量与土壤背景镉呈明显的正相关,与土壤pH和有机质含量呈较弱的负相关。In order to study the correlation between cadmium content in rice and soil environment,the cadmium content in rice and the corresponding soil pH,organic matter and cadmium content in rice harvest were determined.The results showed that the contents of Cd in rice and soil were 0.051~0.259 mg·kg^-1 and 0.288~1.208 mg·kg^-1,respectively;the contents of organic matter in soil were 13.6~33.0 g·kg^-1 and pH was 5.5~7.8.The content of cadmium in rice was positively correlated with soil background cadmium,and negatively correlated with soil pH and organic matter.

关 键 词：大米 土壤 镉 有机质 PH 

分 类 号：X53[环境科学与工程—环境工程]