华北农学报Issue(z1)：366-370,5.
烟草对重金属铅铬砷汞积累分配特性分析
Analysis of Characteristics of Accumulation and Translocation of Tobacco to Different Heavy Metal Elements
摘要
Abstract
To provide the reference to tobacco heavy-metal elements absorption mechanism research ,the experi-ment was carried out on characteristics of heavy-metal enrichment ,transfer and distribution of heavy-metal elements between organs of tobacco .With Zhongyan 103 as material ,tobacco samples were acquired ,heavy-metal elements in tobacco plant spatial distribution were detected after transplanting 30,45,60,75,90 and 110 days.Tobacco root ab-sorption of lead and chromium remained active throughout its living stage , and lead and chromium content in the roots were significantly higher than those of stems and leaves .Tobacco arsenic content in the root has been main-tained at a high level , and was significantly higher than that of stem and leaf .But in 45 days and 75 days ( After transplanting ) ,lower leaves arsenic content were the highest .Mercury content in leaves was higher than that in the root and stem .However ,middle leaves mercury content was significantly higher than that of other parts of tobacco plants in the late growth period .Tobacco varies in absorption and accumulation to different heavy-metal elements . Mercury behaves as late accumulation ,and lead,chromium and arsenic to metaphase accumulation .Mercury accu-mulation and root-to-leaf transfer capability is the strongest among the four elements .Lead and chromium are mainly stored in root ,and the storage of arsenic and mercury is almost equally in root and leaf .关键词
烟草/重金属/积累/分配Key words
Tobacco/Heavy-metal/Accumulation/Translocation分类
农业科技引用本文复制引用
鲁黎明,顾会战,彭毅,陈勇,王栋..烟草对重金属铅铬砷汞积累分配特性分析[J].华北农学报,2013,(z1):366-370,5.基金项目
广元市烟草公司科技项目 （）
