| 香蕉幼苗对重金属Pb的吸收累积规律研究 |
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| 引用本文： | 黄月华,毕仁军,江剑侑. 香蕉幼苗对重金属Pb的吸收累积规律研究[J]. 热带作物学报, 2011, 31(4): 48-50 |
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| 作者姓名： | 黄月华 毕仁军 江剑侑 |
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| 作者单位： | 1 海南大学环境与植物保护学院 海南儋州 571737;2 海南省农垦科学院 海南海口 570206;1 海南大学环境与植物保护学院 海南儋州 571737 |
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| 摘 要： | 研究重金属Pb在土壤-香蕉幼苗体系中的迁移分配规律。以沙质砖红壤为供试土壤,以香蕉幼苗为试验植物,采用实验室盆栽模拟试验进行研究。结果表明：Pb进入土壤后,从土壤向根系、茎、叶迁移,组织中Pb含量逐渐减少,表现为根系＞茎＞叶;不同Pb处理浓度对香蕉苗体内Pb富集效果有较大影响,随着Pb处理浓度的增加,香蕉苗各部位富集系数呈现先增后减的趋势,并在100 mg/kg处理时达到最大值;不同处理的香蕉苗各部位富集系数表现为根系＞茎＞叶。香蕉苗不同部位吸收累积重金属Pb大部分在根部,向茎和叶迁移的量较小。
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| 关 键 词： | 香蕉-土壤系统 Pb 吸收累积 |
Potted cultivation was carried out to study the process of absorption and accumulation of Pb2+ in soil and banana system. The results showed that after Pb2+ was introduced to the banana-soil system, the order of concentration of Pb2+ in different parts of |
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| Affiliation: | 1 Environment and plant protection college, Hainan University, Danzhou, Hainan 571737;2 Academy of sciences of Hainan State Farms, Haikou, Hainan 570206;1 Environment and plant protection college, Hainan University, Danzhou, Hainan 571737 |
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| Abstract: | Potted cultivation was carried out to study the process of absorption and accumulation of Pb2+ in soil and banana system. The results showed that after Pb2+ was introduced to the banana-soil system, the order of concentration of Pb2+ in different parts of banana was root, stem and leaf. The enrichment coefficients of banana seedling showed a trend from ascent to descent with increasing concentration of Pb2+ treatment, and the enrichment coefficients tent to the peak when concentration of Pb2+ was 100mg/kg. The sequence of enrichment coefficients of different parts of banana was root, stem and leaf at each treatment. Pb2+ were absorbed and attributed in largely, few were transported to the above ground parts. |
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| Keywords: | banana-soil system Pb absorption and accumulation |
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