| 李南,刘玉玲,张朴心,姚俊帆,尹雪斐,铁柏清.肠杆菌（Enterobacter sp. M5）-生物炭复合材料对水稻镉、砷积累的影响[J].农业环境科学学报,2025,44(7):1697-1709. |
| 肠杆菌（Enterobacter sp. M5）-生物炭复合材料对水稻镉、砷积累的影响 |
| Effects of Enterobacter sp. M5-biochar composite material on cadmium and arsenic accumulation in rice |
| 投稿时间：2024-09-01 |
| DOI：10.11654/jaes.2024-0729 |
| 中文关键词: 镉（Cd） 砷（As） 水稻 硫酸盐还原 磁性椰壳炭 |
| 英文关键词: cadmium（Cd） arsenic（As） rice sulfate reduction magnetic coconut shell biochar |
| 基金项目:湖南省高新技术产业科技创新引领计划项目（2020NK2001）；国家重点研发计划项目（2017YFD0801505） |
| 作者 | 单位 | E-mail | | 李南 | 湖南农业大学环境与生态学院, 长沙 410128
湖南省灌溉水源水质污染净化工程技术研究中心, 长沙 410128
农业农村部南方产地污染防控重点实验室, 长沙 410128 | | | 刘玉玲 | 湖南农业大学环境与生态学院, 长沙 410128
湖南省农业科学院, 湖南省农业环境生态研究所, 长沙 410125 | | | 张朴心 | 湖南农业大学环境与生态学院, 长沙 410128
湖南省灌溉水源水质污染净化工程技术研究中心, 长沙 410128
农业农村部南方产地污染防控重点实验室, 长沙 410128 | | | 姚俊帆 | 湖南农业大学环境与生态学院, 长沙 410128
湖南省灌溉水源水质污染净化工程技术研究中心, 长沙 410128
农业农村部南方产地污染防控重点实验室, 长沙 410128 | | | 尹雪斐 | 湖南农业大学环境与生态学院, 长沙 410128
湖南省农业科学院, 湖南省农业环境生态研究所, 长沙 410125 | | | 铁柏清 | 湖南农业大学环境与生态学院, 长沙 410128
湖南省灌溉水源水质污染净化工程技术研究中心, 长沙 410128
农业农村部南方产地污染防控重点实验室, 长沙 410128 | tiebq@qq.com |
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| 中文摘要: |
| 为探究肠杆菌M5-生物炭复合材料对水稻镉（Cd）、砷（As）积累的影响，采用盆栽试验方法，以肠杆菌M5、生物炭及肠杆菌M5-生物炭复合材料作为试验材料设置6个处理，分别为对照（CK）、肠杆菌M5（M5）、椰壳炭（B）、磁性椰壳炭（MB）、肠杆菌M5-椰壳炭复合材料（BM5）和肠杆菌M5-磁性椰壳炭复合材料（MBM5）。结果表明：肠杆菌M5、生物炭单独施用和复合施用均能降低籽粒中Cd、As含量，其中M5、MB、BM5和MBM5处理的籽粒Cd、无机砷（IAs）含量符合食品安全国家标准。相较于单一施用菌株和生物炭的处理，肠杆菌M5-生物炭复合处理对于降低水稻籽粒、壳与植株各部位中Cd、As含量的效果更好，其中MBM5处理降低籽粒中Cd、As含量的效果最佳，使早、晚稻籽粒Cd含量分别降低了25.49%、74.00%，As含量分别降低了39.83%、30.95%。BM5、MBM5处理显著提高了水稻根表铁膜中Cd、As、S和Fe的含量，其中MBM5处理的根表铁膜Cd、As、S和Fe的含量分别增加了171.82%、139.94%、72.52%和140.20%。B、MB、BM5和MBM5处理均显著降低了根际土、非根际土有效态Cd、As含量。肠杆菌M5-生物炭复合处理可提高微生物群落丰度和多样性，BM5和MBM5处理使Enterobacter属的相对丰度分别提高了9.99倍和17.26倍。研究表明，施用MBM5是同时降低水稻吸收积累Cd、As的有效方法。 |
| 英文摘要: |
| This study was designed to investigate the impact of the Enterobacter sp. M5-biochar composite material on cadmium（Cd）and arsenic（As）accumulation in rice. We established six treatments using a pot experiment method, including Enterobacter sp. M5, biochar, and Enterobacter sp. M5-biochar composite material：control（CK）, Enterobacter sp. M5（M5）, coconut shell biochar（B）, magnetic coconut shell biochar（MB）, Enterobacter sp. M5-coconut shell biochar composite material（BM5）, and Enterobacter sp. M5-magnetic coconut shell biochar composite material（MBM5）. The results showed that the single and combined applications of Enterobacter sp. M5 and biochar could reduced Cd and As concentration of rice grains. The M5, MB, BM5, and MBM5 treatments resulted in rice contained levels of Cd and inorganic arsenic（IAs）that comply with national food safety standards. Compared to the treatments with single application of Enterobacter sp. M5 and biochar, Enterobacter sp. M5-biochar composite material were more effective in reducing the Cd and As contents in brown rice, husk and various parts of the plant, among which MBM5 treatment has the best effect on reducing the contents of Cd and As in rice, resulting in reductions Cd content in early and late rice grains by 25.49% and 74.00%, respectively, and decreases in As content by 39.83% and 30.95%, respectively. The BM5 and MBM5 treatments significantly increased the contents of Cd, As, S and Fe in root surface iron plaque, among which the contents of Cd, As, S and Fe in MBM5 treatment were increased by 171.82%, 139.94%, 72.52% and 140.20%, respectively. The B, MB, BM5, and MBM5 treatments significantly reduced the contents of available Cd and As in rhizosphere and non-rhizosphere soil. Enterobacter sp. M5-biochar composite material treatment improve the abundance and diversity of the microbial community, with the relative abundance of the Enterobacter genus increasing by 9.99, and 17.26 times in the BM5, and MBM5 treatments, respectively. Research indicate that the application of MBM5 was an effective method to simultaneously reduce the absorption and accumulation of Cd and As in rice. |
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