烟草对污染土壤中镉胁迫的响应机制及影响因素研究进展.pdf

2011-08,32(4) 中国烟草科学 Chinese o Science 87
烟草对污染土壤中镉胁迫的响应机制及影响因素研究进展
雷丽萍 1,陈世宝 2 *,夏振远 1,柴家荣 1,王萌 2
(,云南玉溪 653100;,中国农业科学院农业资源与
农业区划研究所,北京 100081)
摘要:低危害烟叶的开发研究一直是国内外烟草研究的热点。大量研究表明,土壤镉(Cd)污染是影响我国烟草品质安
全性的主要因素之一。烟草属于易累积 Cd 的作物之一,Cd 污染胁迫不仅影响烟草的生理过程,同时也会降低烟叶的品质。
笔者针对目前国内外对 Cd 在土壤-烟草系统中的迁移、转化规律及其影响因素进行了综述,并对降低烟草 Cd 吸收的主要
措施及相关研究进行了展望。
关键词:镉胁迫;污染土壤;烟草;修复
中图分类号: 文章编号:1007-5119(2011)04-0087-07 DOI:.1007-
Tolerance and Accumulation of Cadmium by o Plants and the
Influence Factors in Polluted Soils: a Review
LEI Liping1, CHEN Shibao2*, XIA Zhenyuan1, CHAI Jiarong1, WANG Meng2
( Academy of o Sciences, Yuxi, Yunnan 653100, China; 2. Ministry of Agriculture Key Laboratory of Plant Nutrition
and Nutrient Cycling, and Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081, China)
Abstract: Cultivation of low-hazard-o (Nicotiana tabacum L.) has been focus of research on o sciences. Recently,
numerous studies indicated that cadmium accumulation by o in polluted soils was ing one of the main factors that
affecting the o quality. Cadmium was readily accumulated by crops such as o in soils, and the cadmium stress in soils
could not only affect the physiological process, but also reduced o’s quality. The mechanisms governing the transport,
accumulation, par