废弃矿污水灌溉区稻米重金属含量及相关性  

Heavy Metal Contents in Rice and the Correlations in Sewage Irrigated Region of Abandoned Mines

作　　者：吴迪[1] 邓琴[2] 周超[1] 杨秀珍[1] 秦樊鑫[1] 李存雄[1] 耿丹[1] 

机构地区：[1]贵州师范大学贵州省山地环境重点实验室,贵州贵阳550001 [2]贵州师范大学科技处,贵州贵阳550001

出　　处：《贵州农业科学》2014年第2期194-197,共4页Guizhou Agricultural Sciences

基　　金：贵州省社会发展攻关项目"贵州典型铅锌矿区土壤重金属污染防治关键技术与修复示范"[黔科合SY(2010)3013];贵州省自然科学基金项目"贵州铅锌矿区土壤中重金属铅锌污染特征及铅锌富集植物筛选研究"[黔科合J字(2010)2031]

摘　　要：为了正确评价废弃铅锌矿区污水灌溉作物的重金属污染及生态环境问题,以贵州典型铅锌矿区DX和DW污水灌溉源的水稻为研究对象,测定其植株及稻米重金属的含量,对贵州铅锌矿区污水灌溉区稻米中重金属的污染及相关性进行分析和评价。结果表明:水稻株体各部分重金属含量最高的是Zn,重金属含量分布为稻茎>稻壳>稻米。水稻各部分中重金属的相关性分析表明,在1%和5%置信区间内,稻茎中Pb、Cu、Ni、Hg与其他4种元素没有明显的相关性,稻壳中Cr、Cd、Hg与其他5种元素没有明显的相关性,稻米中Pb、Cd、Hg、As与其他4种元素没有明显的相关性;而稻茎与稻壳、稻壳与稻米中的Cr、Pb、Cd、Cu、Zn、Ni、Hg和As的含量有显著正相关。In order to correctly evaluate heavy metal pollution and ecological environment problems in sewage irrigated region of abandoned mines,heavy metal contents in rice plant and rice from sewage irrigated region of abandoned lead-zinc mining area DX and DW,and the pollution status and correlations were also analyzed and evaluated.The results showed that Zn was of the highest content in rice plant following the sequence of stem＆gt; rice hull ＆gt; rice.In rice stem Pb,Cu,Ni and Hg had no significant correlations with the other four elements.In rice hull Cr,Cd and Hg had no significant correlations with the other five elements.In rice Pb,Cd,Hg and As had no significant correlations with the other four elements.Cr,Pb,Cd,Cu,Zn,Ni and Hg had significant positive correlation with As between rice stem and rice hull,and between rice hull and polished rice.

关 键 词：铅锌矿区 污水灌区 水稻米 重金属 相关性 

分 类 号：S51[农业科学—作物学]