| 干旱区绿洲土壤外源Pb对油菜生长和吸收Cd、Zn的影响 |
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| 引用本文： | 颜斌,南忠仁,武文飞,臧振峰,赵转军.干旱区绿洲土壤外源Pb对油菜生长和吸收Cd、Zn的影响[J].干旱区资源与环境,2013(7):56-60. |
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| 作者姓名： | 颜斌 南忠仁 武文飞 臧振峰 赵转军 |
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| 作者单位： | 兰州大学资源环境学院西部环境教育部重点实验室 |
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| 基金项目： | 国家自然科学基金(NSFC 51178209、91025015);中央高校基本科研业务费专项资金(lzujbky-2011-66)共同资助 |
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| 摘 要： | 以干旱区绿洲土壤和油菜为供试对象,通过Cd-Zn和Cd-Pb-Zn胁迫下的盆栽试验研究了Cd-Zn污染绿洲土壤条件下Pb的介入对油菜生长及吸收和迁移Cd、Zn的影响。结果表明,Pb的介入促进了油菜茎叶的生长,在较低水平(Cd≤1.8mg·kg-1、Zn≤300mg·kg-1)时促进了根系的生长,而在较高水平(Cd>1.98mg·kg-1、Zn>300mg·kg-1)时则抑制了根系的生长;Pb的介入促进了油菜对Cd、Zn的吸收,但并未影响油菜对Cd、Zn吸收的变化趋势;Pb的介入促进了油菜对Cd、Zn的富集,却抑制了对Cd、Zn的迁移。
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| 关 键 词： | 绿洲土 油菜 铅 富集 迁移 |
Influence of added Pb on rape growth and Cd and Zn uptake in arid oasis soils |
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| YAN Bin,NAN Zhongren,WU Wenfei,ZANG Zhenfeng,ZHAO Zhuanjun.Influence of added Pb on rape growth and Cd and Zn uptake in arid oasis soils[J].Journal of Arid Land Resources and Environment,2013(7):56-60. |
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| Authors: | YAN Bin NAN Zhongren WU Wenfei ZANG Zhenfeng ZHAO Zhuanjun |
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| Institution: | (Key Laboratory of Western China’S Environmental Systems with the Ministry of Education,School of Resources and Environmental Sciences,Lanzhou University,Lanzhou 730000,P.R.China) |
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| Abstract: | Soil samples and rapes samples were collected from the arid oasis region and used as research objects.Pot experiments of Cd-Zn and Cd-Zn-Pb were conducted to study laws of the growth,uptake and transferring of rapes' roots and shoots to Cd/Zn Stress as added Pb in arid oasis soil.The results showed the growth of rape shoots was promoted while Pb was added,and rapes' roots growth were firstly promoted at low treatment level(Cd≤1.8 mg/kg,Zn≤300 mg/kg) and then inhibited at high treatment level(Cd>1.8 mg/kg、Zn>300 mg/kg).Owing to added Pb,the uptake of Cd and Zn become more easily,but the trends that both Cd and Zn were absorbed was not influenced.The accumulation of Cd and Zn from soils to roots was promoted,but the transferring of Cd and Zn from roots to shoots was inhibited to a certain extent as Pb was added. |
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| Keywords: | oasis soil Pb rape accumulation transportation |
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