湖南农业大学学报（自然科学版）2012，Vol.38Issue(3)：325-329,5.DOI:10.3724/SP.J.1238.2012.00325
铅锌尾矿重金属胁迫下秸秆对蓖麻生理特性和重金属积累的影响
Effects of straw addition on physiological parameters and uptake of heavy metals in Ricinus communis under the stress of Pb/Zn mine tailing
摘要
Abstract
Pot experiments were carried out to investigate the effect of straw addition on biomass, contents of malonyldialdehyde (MDA), activities of superoxide dismutase (SOD), catalase (CAT), peroxide enzyme (POD) and the accumulation of heavy metals (Pb, Zn, Cd) in Ricinus communis under the stress of Pb/Zn mine tailing. The results indicated that straw addition significantly increased fresh weight, height and root length of Ricinus communis. The contents of MDA and the activities of SOD, POD, CAT in the leaves of Ricinus communis under the straw treatments were 48.08%, 7.28%, 28.60% and 4.74% lower than the control, respectively. DTPA-extractable contents of Pb, Zn and Cd in the Pb/Zn mine tailing decreased significantly. The contents of Pb, Zn and Cd in plant organs of Ricinus communis decreased significantly with straw addition. An extremely significant positive correlation were observed between the activities of POD, SOD and the contents of Pb, Zn and Cd in the leaves of Ricinus communis, and significant or extremely significant positive correlation were observed between the contents of Pb, Zn and Cd in plant organs of Ricinus communis and DTPA-extractable contents of Pb, Zn and Cd in Pb/Zn mine tailing.关键词
秸秆/蓖麻/生理特性/铅锌尾矿砂/重金属胁迫Key words
straw/ Ricinus communis/ physiological parameters/ Pb/Zn mine tailing/ heavy metal stress分类
资源环境引用本文复制引用
朱佳文,邹冬生,向言词,王晖,谭伟文..铅锌尾矿重金属胁迫下秸秆对蓖麻生理特性和重金属积累的影响[J].湖南农业大学学报（自然科学版）,2012,38(3):325-329,5.基金项目
湖南省科学技术厅项目(2010NK3020) （2010NK3020）
湖南省教育厅重点项目(10A031) （10A031）
湖南省自然科学市州联合基金项目(11JJ9007) （11JJ9007）
