| 李晓清,钟娴慧,黄靖淇,黄彦,吴启堂,陈杨梅,卫泽斌.施锰对降低水稻镉含量的增强效应[J].农业环境科学学报,2024,43(11):2637-2643. |
| 施锰对降低水稻镉含量的增强效应 |
| Enhancement effect of manganese application on reducing cadmium accumulation in rice after soil stabilization |
| 投稿时间：2023-11-14 |
| DOI：10.11654/jaes.2023-0957 |
| 中文关键词: 水稻 镉 锰 沸石 增强效应 |
| 英文关键词: rice cadmium manganese zeolite enhancement effect |
| 基金项目:国家重点研发计划项目(2022YFC3701304);广东特支项计划本土创新团队项目(2019BT02L218) |
| 作者 | 单位 | E-mail | | 李晓清 | 华南农业大学资源环境学院, 广东省农业农村污染治理与环境安全重点实验室, 广州 510642 | | | 钟娴慧 | 华南农业大学资源环境学院, 广东省农业农村污染治理与环境安全重点实验室, 广州 510642 | | | 黄靖淇 | 华南农业大学资源环境学院, 广东省农业农村污染治理与环境安全重点实验室, 广州 510642 | | | 黄彦 | 华南农业大学资源环境学院, 广东省农业农村污染治理与环境安全重点实验室, 广州 510642 | | | 吴启堂 | 华南农业大学资源环境学院, 广东省农业农村污染治理与环境安全重点实验室, 广州 510642 | | | 陈杨梅 | 华南农业大学资源环境学院, 广东省农业农村污染治理与环境安全重点实验室, 广州 510642 | | | 卫泽斌 | 华南农业大学资源环境学院, 广东省农业农村污染治理与环境安全重点实验室, 广州 510642 | wezebin@scau.edu.cn |
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| 中文摘要: |
| 为探讨锰肥施用对镉污染农田水稻降镉的叠加效果，在田间条件下进行盆栽试验，即在田间试验前茬对照、沸石钝化处理的基础上设置了施锰的盆栽试验。通过早稻+晚稻的田间盆栽试验，分析了不同处理对水稻生物量、镉含量和土壤镉含量的影响。结果表明：前茬沸石钝化处理使早、晚稻籽粒镉含量分别降低了69.1%和90.7%；施锰进一步降低了水稻籽粒镉含量，在前茬沸石钝化处理的基础上施加锰肥可以使早、晚稻籽粒镉含量分别降至 0.104 mg·kg-1和 0.011 mg·kg-1，降低幅度分别为 19.4% 和31.3%。盆栽底部无孔处理水稻镉含量低于有孔盆栽处理。研究表明，在钝化的基础上继续施加锰肥是一种进一步降低水稻镉含量的有效措施，田间盆栽试验也为研究多因素影响水稻吸镉提供了方法。 |
| 英文摘要: |
| To elucidate the enhancement effect that manganese（Mn） fertilizer application can have on reducing cadmium（Cd） accumulation in rice grown in Cd-contaminated farmland pre-treated with soil stabilization, a special pot experiment was conducted in the field, with and without Mn addition. Two soil pre-treatments were applied before the pot experiment：the control and the alkaline zeolite treatment. Rice biomass, Cd contents of the rice, and soil were measured for both the early and late rice crops. Compared with the control, the zeolite pre-treatment decreased Cd content in early and late rice by 69.1% and 90.7%, respectively. Mn fertilizer further reduced the Cd content of early and late rice grains to 0.104 mg·kg-1 and 0.011 mg·kg-1, respectively. When combined with the zeolite pre-treatment, the reduction rates were 19.4% and 31.3%, respectively. Cd contents of rice grown in pots without holes at the bottom were generally lower than that in pots with holes. These results indicate that after soil stabilization, the application of Mn fertilizer can further reduce Cd accumulation in rice, and the pot experiment in the field provides a useful tool for studying the effects of multiple factors on Cd accumulation in rice. |
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