| H2O2介导的Fenton反应对砷镉污染下水稻生物量的影响 |
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| 引用本文： | 黎俏文,秦俊豪,陈桂葵,黎华寿.H2O2介导的Fenton反应对砷镉污染下水稻生物量的影响[J].农业环境科学学报,2015,34(7):1233-1238. |
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| 作者姓名： | 黎俏文 秦俊豪 陈桂葵 黎华寿 |
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| 作者单位： | 华南农业大学 农业部华南热带农业环境重点实验室, 广州 510642;广东省高等学校农业生态与农村环境重点实验室, 广州 510642,华南农业大学 农业部华南热带农业环境重点实验室, 广州 510642;广东省高等学校农业生态与农村环境重点实验室, 广州 510642,华南农业大学 农业部华南热带农业环境重点实验室, 广州 510642;广东省高等学校农业生态与农村环境重点实验室, 广州 510642,华南农业大学 农业部华南热带农业环境重点实验室, 广州 510642;广东省高等学校农业生态与农村环境重点实验室, 广州 510642 |
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| 基金项目： | 国家重点基础研究发展计划(973)项目(2011CB100400);国家高技术研究发展计划(863)项目(2013AA102402);国家自然科学基金项目(41271469);广东省科技计划项目(2012A020100003) |
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| 摘 要： | 采用土壤-石英砂根袋法,研究了淹水和干湿交替两种水分条件下,模拟天然降雨中微摩尔级浓度H2O2介导Fenton反应对砷镉污染土壤上水稻生长的影响。结果表明,添加砷浓度30 mg·kg-1处理组在有Fenton反应的情况下显著提高了水稻在分蘖期的干重和鲜重,在添加砷浓度30 mg·kg-1和镉浓度0.3 mg·kg-1的复合污染处理组Fenton反应也提高了水稻在成熟期的干重和鲜重,同时Fenton反应增加了添加镉浓度为0.3、3 mg·kg-1处理组的稻谷产量。模拟研究证明,H2O2介导的Fenton反应可以缓解砷、镉污染对水稻的胁迫作用,提高水稻的生物量和产量。
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| 关 键 词： | Fenton反应 砷 镉 淹水 干湿交替 |
| 收稿时间： | 2015/1/26 0:00:00 |
Effect of Hydrogen Peroxide Induced Fenton Reaction on Biomass of Rice in Soil Contaminated by Cd and As |
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| LI Qiao-wen,QIN Jun-hao,CHEN Gui-kui and LI Hua-shou.Effect of Hydrogen Peroxide Induced Fenton Reaction on Biomass of Rice in Soil Contaminated by Cd and As[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2015,34(7):1233-1238. |
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| Authors: | LI Qiao-wen QIN Jun-hao CHEN Gui-kui and LI Hua-shou |
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| Institution: | Key Laboratory of South China Tropical Agro-Environment, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China;Key Laboratory of Agroecology and Rural Environment of Guangdong Higher Education Institutions, Guangzhou 510642, China,Key Laboratory of South China Tropical Agro-Environment, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China;Key Laboratory of Agroecology and Rural Environment of Guangdong Higher Education Institutions, Guangzhou 510642, China,Key Laboratory of South China Tropical Agro-Environment, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China;Key Laboratory of Agroecology and Rural Environment of Guangdong Higher Education Institutions, Guangzhou 510642, China and Key Laboratory of South China Tropical Agro-Environment, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China;Key Laboratory of Agroecology and Rural Environment of Guangdong Higher Education Institutions, Guangzhou 510642, China |
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| Abstract: | A pot experiment using a rhizo-bag system filled with soil and sand was conducted to investigate if rice growth was influenced by Fenton Reaction induced by hydrogen peroxide at micro molar level from simulated rain water in arsenic and/or cadmium contaminated paddy soil under all-time flooding and partial flooding. Results show that the Fenton Reaction significantly improved the dry weight and fresh weight of rice at tillering stage in the treatment with 30 mg As·kg-1 soil, and at maturing stage in the treatment with both 30 mg As·kg-1 soil and 0.3 mg Cd·kg-1 soil. Fenton Reaction also improved the weight of rice grain in treatments with 0.3 mg Cd·kg-1 soil and 3 mg Cd·kg-1 soil. These findings prove that Fenton Reaction could reduce the negative impacts of arsenic and cadmium contamination on rice growth and increase rice biomass and yield. |
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| Keywords: | Fenton Reaction arsenic cadmium continuous flood interval flood |
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