| 苹果酸、草酸对铅镉胁迫下刺槐生长与离子富集特性的影响 |
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| 引用本文： | 熊鹏辉,周建、.苹果酸、草酸对铅镉胁迫下刺槐生长与离子富集特性的影响[J].现代农业科技,2022(7). |
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| 作者姓名： | 熊鹏辉 周建、 |
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| 作者单位： | 1.河南科技学院园艺园林学院,1.河南科技学院园艺园林学院;2.河南省园艺植物资源利用与种质创新工程研究中心 |
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| 基金项目： | 河南省科技攻关项目(202102110053)。 |
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| 摘 要： | 为了探索铅镉胁迫下苹果酸、草酸对刺槐生长与离子富集特性的影响,本试验以刺槐植株为研究对象,在600mg/kg铅、20mg/kg镉污染土壤中添加不同浓度的苹果酸、草酸,测定刺槐生长量、铅镉含量和离子转移特性等指标。试验结果表明,苹果酸和草酸对铅镉胁迫下刺槐植株生长有一定程度的抑制作用,但差异不显著；两者促进刺槐根部的铅、镉离子富集,但降低了铅、镉离子的转运率,其中8.0mmol/kg草酸的铅富集促进效益最显著。因此,8.0mmol/kg草酸可作为一种外源调控手段应用于刺槐修复铅镉污染土壤的实践中。
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| 关 键 词： | 刺槐 苹果酸 草酸 铅镉胁迫 生长 离子富集 |
| 收稿时间： | 2021/7/27 0:00:00 |
| 修稿时间： | 2021/7/27 0:00:00 |
Effects of Malic Acid and Oxalic Acid on Characteristics of Growth and Ion Accumulation of Robinia pseudoacacia Seedling under Lead and Cadmium Stress |
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| Authors: | ZHOU Jian |
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| Institution: | School of Horticulture and Landscape Architecture,Henan Institute of Science and Technology,Xinxiang,;Henan Province Engineering Center of Horticultural Plant Resource Utilization and Germplasm Enhancement,Xinxiang |
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| Abstract: | In order to explore effects of malic acid (MA) and oxalic acid (OA) on plant growth and ion accumulation of Robinia pseudoacacia seedlings under lead and cadmium stress, the seedlings were taken on as experimental materials, different concentrations of MA and OA were added into polluted soil containing 600mg/kg Pb and 20mg/kg Cd, and finally, some indexes consisted of plant growth, contents of Pb and Cd and ion-transporting coefficient were measured in this experiment. Experiment results showed that MA and OA brought an non-significant inhibition of seedling growth to a certain extent, and they promoted the ion accumulations of Pb and Cd, but decreased their transporting capacities in treated seedlings as for R. pseudoacacia, and while, 8.0mmol/kg OA had the most significant promoting efficency in this experiment. So spraying 8.0mmol/kg oxalic acid could be used as an exogenous regulation method in the practice of R. pseudoacacia in the remediation of lead and cadmium contaminated soil. |
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| Keywords: | R pseudoacacia malic acid oxalic acid lead cadmium stress growth ion accumulation |
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