| 王玺洋,辛在军,李晓晖,李亮,孙小艳,闵芳芳.稻秆炭与巨菌草联合对铜镉污染土壤的修复[J].农业环境科学学报,2021,40(1):74-82. |
| 稻秆炭与巨菌草联合对铜镉污染土壤的修复 |
| Effect of combination of rice-straw biochar and Pennisetum sinese on remediating Cu and Cd contaminated soil |
| 投稿时间：2020-07-28 |
| DOI：10.11654/jaes.2020-0878 |
| 中文关键词: 联合修复 稻秆生物炭 铜镉复合污染 巨菌草 绝对富集量 修复边际效率 |
| 英文关键词: combined remediation rice-straw biochar joint pollution of Cu and Cd Pennisetum sinese absolute enrichment amount marginal remediation efficiency |
| 基金项目:江西省重大科研开发专项（20194ABC28010）；江西省科学院重点研发项目（2020-YZD-27）；江西省中央引导地方科技发展专项资金项目（20192ZDD01001）；江西省科学院博士基金项目（2017-YYB-01）；江西省科学院普惠制项目（2017-XTPH1-01） |
| 作者 | 单位 | E-mail | | 王玺洋 | 江西省科学院鄱阳湖研究中心, 南昌 330096
江西省重金属污染生态修复工程技术研究中心, 南昌 330096 | | | 辛在军 | 江西省科学院鄱阳湖研究中心, 南昌 330096
江西省重金属污染生态修复工程技术研究中心, 南昌 330096 | | | 李晓晖 | 江西省科学院鄱阳湖研究中心, 南昌 330096
江西省重金属污染生态修复工程技术研究中心, 南昌 330096 | | | 李亮 | 江西省科学院鄱阳湖研究中心, 南昌 330096
江西省重金属污染生态修复工程技术研究中心, 南昌 330096 | | | 孙小艳 | 江西省科学院鄱阳湖研究中心, 南昌 330096
江西省重金属污染生态修复工程技术研究中心, 南昌 330096 | | | 闵芳芳 | 江西省分析测试研究所, 南昌 330029 | mff823348915@163.com |
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| 中文摘要: |
| 通过野外小区试验施加不同用量（0、5 000、10 000、15 000、20 000 kg·hm-2）的稻秆生物炭（稻秆炭），探究施用稻秆炭对巨菌草修复铜镉复合（Cu-Cd）污染土壤的影响，并评价稻秆炭与巨菌草联合修复重金属污染土壤的潜力和优势。结果表明，稻秆炭施用可明显提高巨菌草在Cu-Cd污染土壤中的成活率，提高其地上生物量；稻秆炭的施用降低了土壤有效态Cu、Cd和全量Cd含量，在一定程度上降低了巨菌草对Cu的富集，但同时促进了巨菌草对Cd的富集，于5 000 kg·hm-2处理下增幅最大，其根、茎、叶的Cd吸收量分别增加60.75%、230.31%和83.34%；稻秆炭施用显著增加了巨菌草地上部重金属绝对富集量，Cu最高达3 741.04 g·hm-2（用量为10 000 kg·hm-2），Cd最高达167.81 g·hm-2（用量为5 000 kg·hm-2）；各处理的修复边际效率显示，5 000 kg·hm-2稻秆炭施用量更经济、有效。研究表明，稻秆炭施用提升了巨菌草地上部对Cu、Cd的富集水平，其联合修复潜力巨大。 |
| 英文摘要: |
| Herein, a field plot experiment was conducted to investigate the effect of rice-straw biochar application on the Pennisetum sinese remediating the Cu- and Cd-contaminated soil by setting up different application amounts of rice-straw biochar(0, 5 000, 10 000, 15 000 kg·hm-2, and 20 000 kg·hm-2), with an aim to evaluate the potential and advantage of the combined remediation of rice-straw biochar and Pennisetum sinese. The results showed that the rice-straw biochar application significantly increased the survival and shoot biomass of Pennisetum sinese in the Cu- and Cd-contaminated soil. Furthermore, the application decreased the available Cu and Cd and the total Cd in soil, and lowered the Cu bioconcentration to some extent; however, it increased the Cd bioconcentration in the Pennisetum sinese. The 5 000 kg·hm-2 biochar treatment made the biggest Cd gains in root, stem, and leaf of Pennisetum sinese, wherein the increases were 60.75%, 230.31%, and 83.34%, respectively. Additionally, the biochar application significantly promoted the absolute enrichment of Cu and Cd in Pennisetum sinese shoot, wherein the biggest increases were up to 3 741.04 g·hm-2 with a 10 000 kg·hm-2 treatment and 167.81 g·hm-2 with a 5 000 kg·hm-2 treatment, respectively. Results suggest that 5 000 kg·hm-2 of rice-straw biochar application amount is more economical and effective according to the marginal efficiency of remediation. The application of rice-straw biochar enhanced the bioconcentration level of the Cu and Cd in the Pennisetum sinese shoot and showed a great remediation potential for Cu- and Cdcontaminated soil. |
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