| .磷灰石和石灰联合巨菌草对重金属污染土壤的改良修复[J].农业环境科学学报,2013,32(7):. |
| 磷灰石和石灰联合巨菌草对重金属污染土壤的改良修复 |
| The Remediation of Heavy Metal Contaminated Soil by Combining Lime and Apatite with Pennisetum sp. |
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| DOI：10.11654/jaes.2013.07.008 |
| 中文关键词: 磷灰石 石灰 巨菌草 土壤 Cu Cd |
| 英文关键词: apatite lime Pennisetum sp. soil Cu Cd |
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| 摘要点击次数: 1949 |
| 全文下载次数: 1734 |
| 中文摘要: |
| 通过盆栽试验，研究了不同剂量磷灰石（0.6%和1.2%）和石灰（0.2%和0.4%）对Cu/Cd污染土壤的修复效果。结果表明，石灰和磷灰石处理均显著提高了土壤溶液和土壤pH，且均表现为0.4%石灰>0.2%石灰>1.2%磷灰石>0.6%磷灰石>对照；同时，土壤溶液和土壤有效态Cu/Cd含量随着磷灰石和石灰的添加而显著降低，且降幅均表现为随材料剂量增加而增加。石灰和磷灰石的添加显著增加了巨菌草的生物量，降低了巨菌草对重金属的吸收，其中0.4%石灰处理巨菌草生物量最高，地上和根生物量分别为：61.45 g和10.31 g。与石灰相比，磷灰石在维持较低活性Cu/Cd的能力方面具有更好的稳定性，但是高剂量的石灰更能有效地通过巨菌草转移土壤中的重金属。 |
| 英文摘要: |
| A pot experiment was set up to test the remediation effects in a Cu and Cd contaminated soil by applying of apatite（dosages of 0.6% and 1.2%） and lime（dosages of 0.2% and 0.4%）. The results showed that soil solution and soil pH was significantly increased with application of lime and apatite, and both followed the order 0.4% lime>0.2% lime>1.2% apatite>0.6% apatite>control. The content of soil solution Cu and Cd and availability Cu and Cd in soil apparently decreased with application of apatite and lime, and the decrease magnitude increased with increasing dosages of lime and apatite. With application of lime and apatite, biomass of Pennisetum sp. increased, and content of Cu and Cd in above part and root decreased. The highest biomass of in above part（61.45 g） and root（10.31 g） of Pennisetum sp.were found in 0.4% lime treated soil. Our results showed that apatite is more sustainable to sustain low availability of Cu and Cd with increasing simulation time than that in lime treated soil. However, lime at the dosage of 0.4% is more effective to remove heavy metal by uptake of Pennisetum sp. than that in apatite treated soil. |
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