| 间作对不同品种玉米和大叶井口边草吸收积累重金属的影响 |
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| 引用本文： | 秦欢,何忠俊,熊俊芬,陈丽娟,毕云.间作对不同品种玉米和大叶井口边草吸收积累重金属的影响[J].农业环境保护,2012(7):1281-1288. |
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| 作者姓名： | 秦欢 何忠俊 熊俊芬 陈丽娟 毕云 |
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| 作者单位： | 云南农业大学资源与环境学院,昆明650201 |
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| 基金项目： | 云南省科技厅应用基础研究基金资助项目（2008CD127） |
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| 摘 要： | 采用土壤盆栽试验,研究砷（As）超积累植物大叶井口边草（PteriscreticaL.）与玉米品种云瑞6号（ZeamaysL.Yunrui6）、云瑞8号（ZeamaysL.Yunrui8）、云瑞88号（ZeamaysL.Yunrui88）间作对其吸收积累重金属的影响。结果表明,不同玉米品种对大叶井口边草的生物量都有一定的抑制作用,均不同程度地降低了其生物量。与玉米间作显著提高了大叶井口边草地上部和根部对As、Cd的吸收,同时显著降低了地上部对Pb的吸收,而地下部对Pb的吸收却有明显增加,尤其以云瑞8号的间作效应最显著。与单作相比,间作能显著提高玉米各器官重金属含量,只有云瑞88号的茎中As含量明显降低,由单作的310.89mg.kg-1降低至间作的145.86mg.kg-1。研究初步表明,大叶井口边草与云瑞8号间作可提高修复As、Cd、Pb污染土壤的效率。
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| 关 键 词： | 玉米 大叶井口边草 间作 重金属 |
Effects of Intercropping on the Contents and Accumulation of Heavy Metals in Maize varieties and Pteris cretica L. |
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| QIN Huan,HE Zhong-jun,XIONG Jun-fen,CHEN Li-juan,BI Yun.Effects of Intercropping on the Contents and Accumulation of Heavy Metals in Maize varieties and Pteris cretica L.[J].Agro-Environmental Protection,2012(7):1281-1288. |
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| Authors: | QIN Huan HE Zhong-jun XIONG Jun-fen CHEN Li-juan BI Yun |
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| Institution: | (Faculty of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China) |
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| Abstract: | Intercropping as an effective approach has been proposed to improve soil contaminated by heavy metals. A soil pot-culture exper- iment was carried out to study the effects of intercropping on the heavy metals uptake by Maize varieties （Zea mays L. Yunrui6 ,Zea mays L. Yunrui8, Zea mays L. Yunrui88 ） with Pteris cretica L. （an arsenic-accumulating plant ）. The results showed that all tested maize vari- eties could reduce the biomass of Pteris cretica L., but there was no significant difference. Intercropping treatments significantly increased As and Cd concentration of the shoots and roots of Pteris cretica L. as well as Pb concentration in roots but significantly decreased Pb uptake in shoots. Intereropping Pter/s cretica L. significantly increased the heavy metal content in different organs of maize, only the As uptake in the stem of Zea mays L. Yunrui88 was reduced from 310.89 mg.kg^-l for mono-crop to 145.86 mg.kg^-1. Compared with monocropping method, in- tercropping of Pteris cretica L. and Zea mays L. Yunrui88 could significantly enhance the improvement efficiency of the soil contaminated by As, Cd, Pb in intercropping system. |
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| Keywords: | maize Pteris cretica L intercropping heavy metal |
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