| 粉煤灰充填复垦下大豆和玉米的生长状况及环境风险评估 |
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| 引用本文： | 张晶,李敏,杨海燕,崔龙鹏.粉煤灰充填复垦下大豆和玉米的生长状况及环境风险评估[J].农业环境科学学报,2011,30(8). |
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| 作者姓名： | 张晶 李敏 杨海燕 崔龙鹏 |
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| 作者单位： | 1. 北京林业大学环境科学与工程学院,北京,100083
2. 安徽理工大学地球与环境学院,安徽淮南,232001 |
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| 基金项目： | 国家自然科学基金(50709001); 安徽省“十一五”科技攻关项目(06013065A) |
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| 摘 要： | 为了解粉煤灰充填复垦下农作物的生长状况,阐明复垦方式对土壤和农作物中重金属含量的影响,以淮南田集电厂粉煤灰为例,采用不同的覆土方式,以全土为对照,在5块试验田种植大豆和玉米,定期观察其长势,并利用ICP-AES和HF-AFS测得种植农作物后土壤、粉煤灰、大豆和玉米的茎叶和果实中的重金属含量。结果表明,各种充填方式下,表层土壤大部分重金属含量降低,而Hg和Se含量增多,并表现出随覆土厚度增大而减少的趋势;复合充填下层土壤中Hg的污染指数为5.732,明显高于其他充填方式;在覆土30cm的充填方式下,农作物的株高大于其他覆土方式;并且在覆土30、50cm方式下,作物的茎叶和果实中所含的重金属的量比较接近全土种植下作物中重金属水平。所以,相对于50cm的覆土方式,覆土30cm充填方式是采煤塌陷地带生态修复和燃煤电厂粉煤灰处置较为经济的方式,也是对农作物中重金属元素影响较小的措施。
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| 关 键 词： | 种植试验 粉煤灰 重金属 生态修复 |
Evaluation of Soybean and Corn Growth and Environmental Risk in Different Patterns of Reclaimed Land Filled with Fly Ash |
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| ZHANG Jing,LI Min,YANG Hai-yan,CUI Long-peng.Evaluation of Soybean and Corn Growth and Environmental Risk in Different Patterns of Reclaimed Land Filled with Fly Ash[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2011,30(8). |
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| Authors: | ZHANG Jing LI Min YANG Hai-yan CUI Long-peng |
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| Institution: | ZHANG Jing1,LI Min1 *,YANG Hai-yan2,CUI Long-peng2(1.School of Environmental Science and engineering,Beijing Forestry University,Beijing 100083,China,2.School of Earth and Environment,Anhui University of Science and Technology,Huainan 232001,China) |
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| Abstract: | In this study,fly ashes were used to reclaim the coal mining subsidence lands to investigate the growth situations of soybeans and corns.The concentrations of heavy metals in soils and crops of the reclaimed lands were also observed.The reclamation included four patterns with 20 cm,30 cm,50 cm and interlayers of soil covers respectively.Half soybeans and half corns were planted on each of the four reclaimed lands,as well as on a control field with ordinary local soils.The results showed that the concentrati... |
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| Keywords: | planting tests fly ash heavy metals ecological restoration |
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