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当前位置: 首页 > 文章 > 土壤重金属处理对烟草中As、Cd、Hg和Pb的累积与分布的影响 中国烟草学报 2016,22 (1) 47-54
Position: Home > Articles > Effects of heavy metal treated soil on accumulation and distribution of As, Cr, Hg and Pb in tobacco Acta Tabacaria Sinica 2016,22 (1) 47-54

土壤重金属处理对烟草中As、Cd、Hg和Pb的累积与分布的影响

作  者：
魏益华;何俊海;冯小虎;王利兵;周瑶敏;李琰琰;袁丽娟;罗林广
单  位：
江西省烟草公司抚州市公司;江西省农业科学院农产品质量安全与标准研究所
关键词：
烟叶;重金属;累积;分布
摘  要：
为了解不同重金属处理烟草中重金属的累积及分布特征,进行了高、中、低浓度的砷(As)、镉(Cd)、汞(Hg)、铅(Pb)及其复合处理盆栽试验。结果表明:烟叶中As、Cd和Pb元素含量随时间变化规律为:初期>收获期、中期,Hg为中期>收获期>初期。重金属污染胁迫下,烟草中重金属累积分布特征为:As和Pb为根>茎>叶,Cd为茎>根>叶,Hg为根>叶>茎(对照:叶>根>茎)。烟草中重金属(除Hg)含量总体随外源添加浓度的增大而显著增大(p<0.05)。复合处理烟叶中重金属含量低于单元素处理。烟叶中重金属增幅顺序为As>Cd>Pb>Hg,As和Cd处理间烟草(根、茎和叶)中As和Cd含量均差异显著。可见,烟草对土壤As和Cd污染最为敏感,烟草种植时应尽量选择土壤As和Cd含量较低的区域以避免其过度累积。
译  名：
Effects of heavy metal treated soil on accumulation and distribution of As, Cr, Hg and Pb in tobacco
作  者：
WEI Yihua;HE Junhai;FENG Xiaohu;WANG Libing;ZHOU Yaomin;LI Yanyan;YUAN Lijuan;LUO Linguang;Institute for Quality & Safety and Standards of Agricultural Products, Jiangxi Academy of Agricultural Sciences;Jiangxi Fuzhou Municipal Tobacco Company;
关键词：
tobacco;;heavy metal;;accumulation;;distribution
摘  要：
Pot experiments with single treatments(As, Cd, Hg and Pb) and compound treatments were carried out to investigate the accumulation and distribution of heavy metals in tobacco. Results indicated that As, Cd and Pb contents in tobacco leaf changed with passing time in the following order: early stage > harvest stage, medium stage, while Hg content was highest at medium stage, followed by harvest stage and early stage. As and Pb contents distributed highest in root, followed by stem and leaf, Cd content highest in stem followed by root and leaf, and Hg highest in root followed by leaf and stem(control treatment: leaf > root > stem) under heavy metals pollution stresses. The accumulation of heavy metals(except Hg) in tobacco increased significantly(p < 0.05) with the increase of additive concentration as a whole. The concentration of heavy metals in compound treatments was lower than that in single element treatments. The growth rates of heavy metals in tobacco leaf were: As > Cd > Pb > Hg. There were significant differences between As content under As treatment and Cd content under Cd treatment in tobacco(root, stem and leaf). It was proved that tobacco was most sensitive to pollution of As and Cd in soil, and thus tobacco planting should select areas with low content of As and Cd to avoid excess accumulation.

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