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重金属锌胁迫下湿地植物对磷的吸收能力变化研究

Keywords: 湿地植物,,,吸收

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Abstract:

选择4种常见的湿地植物,研究了重金属锌胁迫下,湿地植物对磷的吸收能力的变化。结果表明,当加入0.5gZnSO4/kg土壤时,4种湿地植物根表铁氧化物胶膜对锌的吸附量增加,而对磷的吸附量显著降低(p<0.05);湿地植物根表铁氧化物胶膜上吸附的磷是湿地植物吸收的磷源,并影响湿地植物地上部分磷含量;在高浓度锌的胁迫下,灯心草地上部分铁含量增加,而导致地上部分磷含量显著降低(p<0.05)。湿地植物根表铁氧化物胶膜上的锌和地上部分铁含量都影响了湿地植物对磷的吸收。

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