煤矸石渣土改良及其效果研究
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国家林业公益性行业科研专项项目“建设工程损毁林地植被修复关键技术研究与示范”(200904030);北京市科学技术研究院科技创新工程项目“环境修复中微生物资源和渣土改良技术研究”(2011A-4-Z)


Analysis on Gangue Improvement and Its Effect
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    摘要:

    自燃煤矸石山渣土具有高盐强酸性,严重制约了植物的生长,因此在对自燃煤矸石山进行植被恢复时,首先要对煤矸石山渣土进行改良。以研究区内黄土作为改良剂,研究了其对自燃煤矸石渣土的改良方法和效果。选取高羊茅、刺槐、紫穗槐、侧柏、山皂角在改良后的渣土中进行种植实验,测试改良效果,筛选适宜在煤矸石山上种植的植物,并确定黄土作为改良剂的施用比例。改良实验结果表明,黄土作为改良剂对自燃煤矸石渣土的强酸性改良效果良好,在pH值为2.8的强酸性渣土中,加入25%的黄土,pH值可提高到6.8。对自燃煤矸石渣土的高盐性改良效果较差,在盐分为3.8%的煤矸石渣土中,加入62.5%的黄土,盐分可降低至0.97%。种植实验也表明,高羊茅、紫穗槐、山皂角对改良后煤矸石渣土的适应性较强,刺槐、侧柏的适应性则较弱。

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    Due to it sat tribute such as high salt and strong acid,the mountainous gangue which had under gone spontaneous combustion seriously constrains plant growth.Therefore it is imperative for ameliorating the conditions of gangue mountain tores to revegetation.The abundant and cheap loess was selected as ameliorant,then the ameliorative effect of the diverse ameliorated methods on Festuca elata,Robiniap seudoacacia ,A morpha fruiticosa,Platycladus oriental is and Gleditsia horrid a respectively in the mixed gangue and loess was studied aimed to select the plant which has strong resistance and is suitable for the coal gangue mountain and determine the proportion of loess applicat ion.The results showed that the loess as ameliorant was effective for improving the strong acidity,while adding 25 percent of loess into str ong acid gangue with pH 2.8 could raise pH to 6.8.How ever it is unconspicuous for the high salt,adding 75 percent of loess into high salt gangue with salt content of 3.8% could reduce salt content to 1.01%.In addition,Festuca elata,A morpha fruiticosa and Gleditsia horrida were more suitable than Robiniap seudoacacia and Platycladus orientalis.

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张静雯,张成梁,宋楠,王贤,张焜.煤矸石渣土改良及其效果研究[J].水土保持通报,2011,(4):227-231

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  • 收稿日期:2010-11-18
  • 最后修改日期:2010-12-24
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  • 在线发布日期: 2014-11-26
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