| 张彦儒,孙思佳,王雅君,姜玉韬,李哲涵,卞广聪,刘国飞,林大松.MnSO4与钝化材料联合施用对镉污染稻田的修复效果[J].农业环境科学学报,2026,45(2):352-361. |
| MnSO4与钝化材料联合施用对镉污染稻田的修复效果 |
| Effects of combined application of MnSO4 and passivation materials on the remediation performance of cadmium-contaminated rice fields |
| 投稿时间：2025-03-11 修订日期：2025-04-03 |
| DOI：10.11654/jaes.2025-0239 |
| 中文关键词: MnSO4 钝化材料 联合应用 Cd 污染 稻田 |
| 英文关键词: MnSO4 passivation materials combined application cadmium contamination rice paddies |
| 基金项目:国家自然科学基金项目（41877403，42307057） |
| 作者 | 单位 | E-mail | | 张彦儒 | 农业农村部环境保护科研监测所, 天津 300191
农业农村部环境保护科研监测所湘潭综合实验站, 湖南 湘潭 400099 | | | 孙思佳 | 农业农村部环境保护科研监测所, 天津 300191
农业农村部环境保护科研监测所湘潭综合实验站, 湖南 湘潭 400099
东北农业大学资源与环境学院, 哈尔滨 150030 | | | 王雅君 | 农业农村部环境保护科研监测所, 天津 300191
农业农村部环境保护科研监测所湘潭综合实验站, 湖南 湘潭 400099 | | | 姜玉韬 | 农业农村部环境保护科研监测所, 天津 300191
农业农村部环境保护科研监测所湘潭综合实验站, 湖南 湘潭 400099
东北农业大学资源与环境学院, 哈尔滨 150030 | | | 李哲涵 | 农业农村部环境保护科研监测所, 天津 300191
农业农村部环境保护科研监测所湘潭综合实验站, 湖南 湘潭 400099
东北农业大学资源与环境学院, 哈尔滨 150030 | | | 卞广聪 | 农业农村部环境保护科研监测所, 天津 300191
农业农村部环境保护科研监测所湘潭综合实验站, 湖南 湘潭 400099 | | | 刘国飞 | 农业农村部环境保护科研监测所, 天津 300191
农业农村部环境保护科研监测所湘潭综合实验站, 湖南 湘潭 400099 | gfliu@zju.edu.cn | | 林大松 | 农业农村部环境保护科研监测所, 天津 300191
农业农村部环境保护科研监测所湘潭综合实验站, 湖南 湘潭 400099 | Lindasong608@126.com |
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| 中文摘要: |
| 为探讨MnSO4和不同钝化材料联合施用对酸性Cd污染稻田的钝化修复效果，选取某酸性Cd污染稻田为试验对象，研究MnSO4和4种钝化材料[生物炭（BC）、腐植酸（HA）、赤泥（RM）和高岭土（KL）]联合施用对土壤的理化性质、根表铁胶膜、有效态Cd含量、Cd形态分布和水稻各部位（根、茎叶、籽粒）Cd富集量的影响。结果表明，MnSO4与钝化材料的联合施用可显著降低Cd污染稻田土壤中 Cd的生物有效性，并抑制水稻对 Cd的吸收，且添加量越大，钝化效果越明显。MnSO4与钝化材料联合应用显著降低土壤有效态Cd含量（降幅为33.33%~51.22%），其中成熟期时MnSO4+生物炭3.0 t·hm-2（ MnBC2）处理效果最佳；联合施用显著促进Cd由酸溶态向可还原态和残渣态转化（残渣态占比提升0.47%~22.27%），其中成熟期时MnSO4+赤泥3.0 t·hm-2（ MnRM2）处理提升残渣态Cd的效果最佳；MnSO4联合钝化材料在添加量为（0.075+3.0）t·hm-2时，水稻籽粒Cd含量较CK降低32.14%~51.42%，均低于食品安全限值（0.2 mg·kg-1），其中 MnRM2和MnBC2处理效果最优。MnSO4与钝化材料的联合施用通过调控土壤理化性质、促进根表铁胶膜生成及多方面钝化机制，显著降低了 Cd 的生物有效性。研究表明，MnBC2 和 MnRM2 两种组合的修复性能最优，MnSO4+高岭土3.0 t·hm-2（MnKL2）和MnSO4+腐植酸3.0 t·hm-2（ MnHA2）两种组合的修复性能还需进一步加强，后续研究应关注田间长期修复效果及材料稳定性。 |
| 英文摘要: |
| To investigate the passivation restoration effect of MnSO4 combined with different passivation materials on paddy fields contaminated by acidic Cd, an acidic Cd-contaminated paddy field was selected to test the effects of combined application of MnSO 4 and four passive materials（biochar, BC; humic acid, HA; red mud, RM; kaolin, KL）on soil physicochemical properties, root surface iron plaque, bioavailable Cd content, Cd morphological distribution in soil, and Cd contents in different parts of rice tissues（roots, stems and grains）. The results showed that the combined application of MnSO4 and passivation materials significantly reduced the bioavailability of Cd in Cd-contaminated paddy soil and inhibited the uptake of Cd by rice. The passivation ability increased with the increase of addition rate of materials. MnSO4 combined with passivating materials significantly reduced the bioavailable Cd content（33.33% to 51.22%）, and MnSO4+ biochar 3.0 t·hm-2（MnBC2）showed the best remediation performance at maturity stage. Moreover, the combined applications promoted the conversion of Cd from acid-soluble state to reducible state and residual state（the proportion of residual state increased by 0.47% to 22.27%）, and MnSO4+ red mud 3.0 t·hm-2（ MnRM2）did best at the maturity stage. Under the treatment of（0.075+3.0）t·hm-2, the content of Cd in rice grains was reduced by 32.14%~51.42% compared with CK, lower than the Chinese food safety limit（0.2 mg·kg-1）. MnRM2 and MnBC2 had the best abilities in decreasing the Cd content in rice grains. The combined application of MnSO4 with these passivation materials significantly reduced the bioavailability of Cd by regulating the physical and chemical properties of soil, promoting the formation of iron plaque on the rice root surface. This study showed that the MnBC2 and MnRM2 had the best performance in remediating Cd-contaminated paddy soils, and the passivation abilities of MnSO4+ kaolin 3.0 t·hmm-2 MnKL2）and MnSO4+ humic acid 3.0 t·hmm-2 MnHA2）needed to be further strengthened. Follow-up studies should focus on the long-term repair effect and material structure stability in the soil. |
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