山东安丘地区土壤-小麦系统重金属等元素间的相互作用  

Interaction of heavy metals and other elements in soil-wheat system in Anqiu area,Shandong Province

作　　者：赵秀芳 王艺璇 张永帅 王燕燕 ZHAO Xiufang;WANG Yixuan;ZHANG Yongshuai;WANG Yanyan(The Seventh Geological and Mineral Exploration Institute of Shandong Province,Linyi,Shandong276006,China;College of Horticulture,Nanjing Agricultural University,Nanjing,Jiangsu210095,China)

机构地区：[1]山东省第七地质矿产勘查院,山东临沂276006 [2]南京农业大学园艺学院,江苏南京210095

出　　处：《现代地质》2020年第5期936-944,共9页Geoscience

基　　金：山东省财政基金项目(鲁勘字(2016)57号)。

摘　　要：为了研究土壤-小麦系统重金属等元素间的相互作用,通过相关分析,探讨了安丘地区40件小麦籽实及其根系土中重金属元素间的相互关系。研究发现:(1)小麦籽实Cd、Hg、Pb、As、Ni、Cu、Zn富集系数与土壤pH、CEC、黏粒含量呈负相关,Cr富集系数与pH呈正相关;(2)小麦籽实重金属等元素富集系数间多数呈正相关;(3)小麦籽实Pb、Cu含量分别与土壤As、Pb含量呈正相关,籽实Cu、Zn含量分别与土壤Cd、Pb含量呈正相关。籽实除Cr含量与土壤Mg含量呈显著正相关外,籽实中其他重金属元素含量与土壤元素Ca、Mg含量关系不显著。小麦籽实中Cd、Pb、As等重金属元素含量与土壤中Mn、Mo、F等微量元素含量少数呈显著-极显著正相关;(4)小麦籽实中Cd、Hg、Pb、As等重金属元素含量与籽实中Ca、Mg、Mn、Mo等其他元素含量之间多数呈显著正相关。这些研究结果表明,土壤-小麦系统重金属元素之间、重金属元素与其他元素之间存在协同或拮抗作用,但具体机制尚需要进一步研究。To study the interactions between heavy metals and other elements in the soil-wheat system,we perform correlation analysis and discuss the relations between 40 sets of wheat seed and their root soil elements.The results show that:(1)Enrichment coefficients of Cd,Hg,Pb,As,Ni,Cu and Zn in the wheat seed are negatively correlated with the soil pH,CEC and clay contents,whereas positive correlation exists between pH and Cr enrichment coefficient;(2)Enrichment coefficients of heavy metals and other elements in the wheat seed are mostly positively correlated;(3)In the wheat seeds,the Pb and Cu contents are positively correlated with the soil As and Pb contents,respectively,while the Cu and Zn contents in the wheat seeds are positively correlated with the Cd and Pb contents in the soil,respectively.Except that the Cr content in the wheat seeds is markedly positively correlated with the Mg content in the soil,there is no major relation between other heavy metals in the wheat seeds and Ca and Mg in the soil.The contents of some heavy metals(such as Cd,Pb and As)in the wheat seeds are positively correlated to the contents of trace elements(such as Mn,Mo and F)in the soil,but most of them are not highly correlated;(4)Contents of most heavy metals(such as Cd,Hg,Pb and As)in the wheat seeds show significant positive correlation with the contents of Ca,Mg,Mn and Mo in the wheat seeds.The above results indicate synergistic or antagonistic effects among heavy metals and other elements in the soil-wheat system,yet the actual mechanism would require further investigation.

关 键 词：小麦籽实 重金属元素 相互分析 安丘 

分 类 号：P595[天文地球—地球化学] P632[天文地球—地质学]