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农学学报

农学学报 ›› 2026, Vol. 16 ›› Issue (1): 48-56.doi: 10.11923/j.issn.2095-4050.cjas2024-0182

• 土壤肥料 资源环境 生态 • 上一篇    下一篇

川东南地区不同水稻品种镉转运积累特征研究

于子涵1,2(), 韩熙1,2, 吴晓玲1,2, 肖光莉2(), 王盈1,2, 陈玉红1,2   

  1. 1 四川省科源工程技术测试中心有限责任公司，成都 611133
    2 自然资源部耕地资源调查监测与保护利用重点实验室，成都 610045
  • 收稿日期:2024-09-27 修回日期:2024-12-15 出版日期:2026-01-20 发布日期:2026-01-15
  • 通讯作者:
    肖光莉，女，1982年出生，四川自贡人，高级工程师，硕士，主要从事土壤生态研究。通信地址：610072四川省成都市青羊区青华路38号，Tel：028-87315214，E-mail：。
  • 作者简介:

    于子涵，男，1994年出生，河南洛阳人，助理工程师，硕士，研究方向：土壤生态研究。通信地址：611133 四川省成都市温江区科惠路一段919号1栋，Tel：028-61509500，E-mail：。

  • 基金资助:
    四川省能源地质调查研究所科研项目“不同耕地类型土壤-农作物镉的地球化学特征及影响因素研究”(202208002)

Research on Characteristics of Cadmium Translocation and Accumulation in Different Rice Cultivars in Southeastern Sichuan Region

YU Zihan1,2(), HAN Xi1,2, WU Xiaoling1,2, XIAO Guangli2(), WANG Ying1,2, CHEN Yuhong1,2   

  1. 1 Sichuan Keyuan Testing Center of Engineering Technology Co., Ltd., Chengdu 611133
    2 Key Laboratory of Investigation, Monitoring, Protection and Utilization for Cultivated Land Resources, Ministry of Natural Resources, Chengdu 610045
  • Received:2024-09-27 Revised:2024-12-15 Online:2026-01-20 Published:2026-01-15

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摘要：

本研究聚焦于川东南地区不同品种水稻中镉的转运积累特征，旨在为该区域轻度Cd污染稻田的稻米安全生产提供理论依据。研究选取四川省隆昌市8个当地主栽水稻品种作为试验材料，运用田间小区试验方法开展研究。先测定水稻的农艺性状和各部位Cd含量，进而分析各品种水稻Cd富集和转运特征，最终筛选出适种的Cd低累积水稻品种。研究结果表明，8个水稻品种的农艺性状存在显著差异，且均处于相应品种理论产量范围之内；除‘内香优3号’、‘内香优5号’和‘泰优2903’外，水稻不同部位的Cd富集能力排序为籽粒>叶片>秸秆>根系。在Cd富集能力方面，8个品种中仅‘泰优2903’籽粒中Cd含量低于标准限值(0.20 mg/kg)，符合国家食品污染物限量标准(GB 2762—2022)。同时，该品种的富集系数BCF籽粒和转运系数TF籽粒/叶片低于其他水稻品种。在转运系数方面，除‘内香优5号’和‘内香优8号’外，转运系数表现为TF叶片/秸秆>TF籽粒/叶片>TF秸秆/根。相关性分析表明水稻籽粒与秸秆中的Cd含量呈极显著正相关(P<0.01)，籽粒Cd含量分别与TF秸秆/根、TF籽粒/叶片呈显著正相关(P<0.05)。基于以上研究结果，推荐在轻度Cd污染区域推广种植‘泰优2903’，同时可通过合理搭配肥料等措施提高其产量。

关键词: 轻度Cd污染土壤, 水稻品种, 镉含量, 积累特征, 转运系数, 富集系数, 农艺性状, 聚类分析

Abstract:

The characteristics of cadmium (Cd) translocation and accumulation in different rice cultivars in the southeast Sichuan were investigated to provide theoretical references for the safe production of rice in regional mild Cd-contaminated paddy fields. Eight local staple rice cultivars in Longchang City, Sichuan Province, were selected as experimental materials to determine the agronomic traits and Cd content of each part of ricethrough field plot test methods, the Cd accumulation and translocation characteristics of each cultivar of rice were analyzed, to filter out the suitable rice cultivars with low Cd accumulation. The results showed that the agronomic traits of the eight rice cultivars differed significantly, and all of them were within the theoretical yield range of the corresponding cultivars. The accumulation capacity of Cd in different parts of rice was ranked as grain>leaf>straw>root, with the exception of ‘Neixiangyou 3’, ‘Neixiangyou 5’ and ‘Taiyou 2903’. Only ‘Taiyou 2903’ was below the standard limit of Cd content (0.20 mg/kg) in grains, which complied with the requirement set in the National Food Standards (GB 2762-2022) among the eight cultivars, and the BCF grains and TF grains/leaves of this cultivar were lower than those of other rice cultivars. The transfer factor pattern was TF leaf/straw > TF grain/leaf > TF straw/root, except for ‘Neixiangyou 5’ and ‘Neixiangyou 8’. Correlation analysis suggested a highly significant positive correlation between Cd content in rice grain and straw (P<0.01), and the Cd content in rice grain was positively correlated with TF straw/root and TF grain/leaf (P<0.05), respectively. Therefore, it was recommended to popularize the cultivation of ‘Taiyou 2903’ in mild Cd-contaminated areas, and the yield can be improved by rational matching of fertilizers and other measures.

Key words: mild Cd contaminated soil, rice cultivars, cadmium content, accumulation characteristics, transfer coefficient, accumulation coefficient, agronomic traits, cluster analysis