干旱区生态环境知识资源中心(Arid): Cd/Pb胁迫下油菜中重金属的分布、富集及迁移特征

Arid

	Cd/Pb胁迫下油菜中重金属的分布、富集及迁移特征
其他题名	Distribution,enrichment and migration characteristics of heavy metals in rape under Cd/Pb stress
	王宁; 南忠仁; 王胜利; 武文飞; 周婷; 李程程; 李萍; 金诚; 雒焕章; 薛粟尹
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2012
卷号	48 期号:3 页码:18-22
中文摘要	采用盆栽试验,研究了干旱区绿洲土壤Cd/Pb复合胁迫下重金属在油菜中的分布、富集及迁移规律.结果表明:较低水平的Cd/Pb复合胁追水平(omega（Cd）<1.4010~(-6),omega（Pb）<30010~(-6))对油菜的生长具有促进作用,超过此临界值后具有逐渐增大的抑制作用;油菜各部位的重金属质量分数均与土壤中相应元素的胁迫水平呈显著正相关,均随着复合胁迫水平的增加而增加,吸收和迁移模式均为二次项;油菜不同部位对Cd,Pb的富集能力和迁移能力存在差异,对于Cd,茎叶富集能力较大,而对于Pb,根系富集能力较大;转运能力为Cd大于Pb,油菜能将根系吸收的Cd更多地转运到茎叶,而同时也将更多的Pb滞留在了根中.
英文摘要	A pot experiment for the distribution,accumulation and migration of heavy metals in the rape was conducted in arid area oasis soil under Cd and Pb combined stress.The results showed that a lower level of Cd/Pb composite stress levels(w（Cd）<1.4010~(-6),w（Pb）<30010~(-6)) could promote the growth of rape,but beyond this critical value it would lead to increased inhibition.The heavy metal content in different parts of rape and the concentrations of the corresponding element of coercion in soil showed a significant positive correlation. The content of heavy metals in different parts of rape was increasing with the Cd,Pb combined stress level. The absorption and transport models were quadratic.The enrichment and migration capabilities of Cd and Pb were different in different parts of rape,with the enrichment capability of stems and leaves of Cd being greater, and for Pb it was greater in the roots.The transport capacity of Cd was greater than Pb,and the roots of rape could transfer more Cd to stems and leaves,while more Pb also remained in the root.
中文关键词	镉 ; 铅 ; 富集 ; 迁移
英文关键词	Cd Pb enrichment migration
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4589857
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228279
作者单位	兰州大学资源环境学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	王宁,南忠仁,王胜利,等. Cd/Pb胁迫下油菜中重金属的分布、富集及迁移特征[J]. 兰州大学,2012,48(3):18-22.
APA	王宁.,南忠仁.,王胜利.,武文飞.,周婷.,...&薛粟尹.(2012).Cd/Pb胁迫下油菜中重金属的分布、富集及迁移特征.兰州大学学报. 自然科学版,48(3),18-22.
MLA	王宁,et al."Cd/Pb胁迫下油菜中重金属的分布、富集及迁移特征".兰州大学学报. 自然科学版 48.3(2012):18-22.