不同配比对煤矸石及巨菌草体内重金属含量的影响
Effects of Different Proportions on Heavy Metal Contents in Coal Gangue and Pennisetum giganteum
DOI: 10.12677/me.2026.144115, PDF,    科研立项经费支持
作者: 王 宏, 徐秀月*, 付知鑫, 霍莹莹：贵州师范学院地理与资源学院，贵州 贵阳；贵州省流域地理国情监测重点实验室，贵州 贵阳
关键词: 煤矸石；粉煤灰；有机质；重金属；巨菌草；Coal Gangue； Fly Ash； Organic Matter； Heavy Metal； Pennisetum giganteum
摘要: 为探究煤矸石、粉煤灰与有机质不同配比对基质重金属含量及巨菌草(Pennisetum giganteum)茎部重金属富集的影响，设置CK (纯煤矸石)及CS1~CS9共9个复配处理(总质量1500 g)，分析基质与植物茎中Fe、Cu、Zn、Mn四种元素含量及其相关性。结果表明：基质中，CS2 (7:2:1)处理有利于Fe、Cu富集，CS3 (6:3:1)处理有利于Zn富集，CS6 (7:1:2)处理有利于Mn富集；有机质添加整体抑制Cu、Zn积累。植物茎中，CS4 (5:4:1)处理促进Cu富集(59.91 mg/kg)，CS2处理促进Zn富集(580.52 mg/kg)，复配处理均显著降低Mn含量(降幅86%以上)，Fe含量处理间无显著差异。相关性分析显示，基质Fe与茎Fe(r = 0.623)、基质Zn与茎Zn (r = 0.715)呈显著或极显著正相关，Cu、Mn未达显著水平。综合考量，CS8 (5:1:4)和CS9 (4:1:5)配比在促进植物生长的同时能有效抑制重金属向地上部分迁移，具有较好应用潜力。
Abstract: To investigate the effects of different proportions of coal gangue, fly ash, and organic matter on heavy metal contents in the substrate and the enrichment of heavy metals in the stem of Pennisetum giganteum, nine treatments, including CK (pure coal gangue) and CS1 to CS9 (total mass 1500 g), were established. The contents of Fe, Cu, Zn, and Mn in the substrate and plant stems, as well as their correlations, were analyzed. The results showed that in the substrate, the CS2 (7:2:1) treatment facilitated the enrichment of Fe and Cu, the CS3 (6:3:1) treatment facilitated the enrichment of Zn, and the CS6 (7:1:2) treatment facilitated the enrichment of Mn. Organic matter addition generally inhibited the accumulation of Cu and Zn. In plant stems, the CS4 (5:4:1) treatment promoted Cu accumulation (59.91 mg/kg), and the CS2 treatment promoted Zn accumulation (580.52 mg/kg). All compound treatments significantly reduced Mn content (by more than 86%), while no significant difference in Fe content was observed among treatments. Correlation analysis revealed that substrate Fe was significantly positively correlated with stem Fe (r = 0.623), and substrate Zn was highly significantly positively correlated with stem Zn (r = 0.715), while Cu and Mn did not reach significant levels. Overall, the CS8 (5:1:4) and CS9 (4:1:5) ratios promoted plant growth while effectively inhibiting the migration of heavy metals to the aboveground parts, demonstrating good application potential.
文章引用：王宏, 徐秀月, 付知鑫, 霍莹莹. 不同配比对煤矸石及巨菌草体内重金属含量的影响[J]. 矿山工程, 2026, 14(4): 1168-1180. https://doi.org/10.12677/me.2026.144115

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