| 镉、丁草胺单一及复合污染对苋菜生长的影响 |
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| 引用本文： | 刘文霞,陈元琦,寇渊博,郭华武,常乐.镉、丁草胺单一及复合污染对苋菜生长的影响[J].河南科学,2009,27(3):305-308. |
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| 作者姓名： | 刘文霞 陈元琦 寇渊博 郭华武 常乐 |
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| 作者单位： | 河南农业大学,环境系,郑州,450002 |
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| 基金项目： | 河南农业大学博士启动基金，河南农业火学林学园艺学院创新基金 |
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| 摘 要： | 通过盆栽试验研究了镉、丁草胺单一及复合污染对苋菜生长的影响.结果表明,镉在土壤中的质量比为5mg/kg（低质量比）时能促进苋菜生长,高质量比（20mg/kg）时抑制了苋菜生长,造成苋菜幼苗成活率显著下降,植株矮化,叶面积和生物量显著减小,镉的毒性作用对苋菜生长的影响持续时间较长.丁草胺污染程度越大,对苋菜生长的抑制作用越强,随着其在土壤中质量比增大到50mg/kg以上,种子发芽延迟,幼苗存活期缩短.随着镉和丁草胺复合污染程度的增高,苋菜成活率、株高等生理指标显著降低,对苋菜生长的抑制作用显著增强.
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| 关 键 词： | 镉 丁草胺 复合污染 苋菜 生理指标 |
Effects of Individual and Combined Pollution of Cadmium and Butachlor on Growth of Amaranth |
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| Liu Wenxia,Chen Yuanqi,Kou Yuanbo,Guo Huawu,Chang Le.Effects of Individual and Combined Pollution of Cadmium and Butachlor on Growth of Amaranth[J].Henan Science,2009,27(3):305-308. |
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| Authors: | Liu Wenxia Chen Yuanqi Kou Yuanbo Guo Huawu Chang Le |
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| Institution: | Department of Environmental Sciences;Henan Agricultural University;Zhengzhou 450002;China |
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| Abstract: | The pot experiment was conducted to study the effects of individual and combined pollution of butachlor and cadmium on amaranth.The results showed that low concentration of cadmium(5 mg/kg)promoted amaranth's growth whereas higher concentration of cadmium(20 mg/kg)strongly restrained their growth,resulting in obvious reduction of survival rate,plant dwarf and decrease of leaf area and biomass.It was indicated that the toxicity of cadmium poses longer-time influence on growth of amaranth.On the other hand,th... |
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| Keywords: | cadmium butachlor combined pollution amaranth physiological index |
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