生态与农村环境学报Issue(6)：774-779,6.
不同玉米品种对重金属铅镉的富集和转运能力
Accumulation and Transfer of Lead (Pb) and Cadmium (Cd) on Different Species of Maize
摘要
Abstract
Based on a pot experiment using 10 cultivars of maize from 10 different production areas, characteristics of the maize adsorbing and accumulating heavy metals, like Pb and Cd were studied. Results show that under combined Pb (400 mg·kg-1)and Cd (10 mg·kg-1) stress, the accumulation of Pb in maize varied with the growth stage, displaying de⁃creasing order of ripening stage>jointing stage>seedling stage, while the Cd accumulation in maize did, too, but displaying a different order, i.e. seedling stage>jointing stage>ripening stage. In addition, the distribution of Pb and Cd in the plant also varied, showing an order as root>stem>leaf>grain, which means that root was the main part where the heavy metals were accumulated. Obviously, the 10 cultivars of maize all exceeded the criteria for Pb (≤0�2 mg·kg-1 ) in grains speci⁃fied in the National Sanitation Standard of China ( NSSC) in content of Pb, while Cultivars Guangtian 3, Guoshenjun 79-5, Xinghuangdan 892, Jindan 51, and Beike 4 were under the criteria for Cd (≤0�1 mg·kg-1 ) in grain specified in the NSSC. The lowest accumulation of Cd was found in Guangtian 3, which suggested that this maize cultivar can be extraplot⁃ed to areas slight or medium in soil pollution.关键词
玉米/铅/镉/富集/转运Key words
maize/lead/cadmium/accumulation/transfer分类
农业科技引用本文复制引用
杨惟薇,刘敏,曹美珠,张超兰..不同玉米品种对重金属铅镉的富集和转运能力[J].生态与农村环境学报,2014,(6):774-779,6.基金项目
国家自然科学基金（41061045）；广西有色金属及特色材料加工重点实验室项目（ GXKFJ12－15）；广西大学科研基金（XJZ130367）；广西自然科学基金 （）
