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农学学报

农学学报 ›› 2025, Vol. 15 ›› Issue (6): 42-49.doi: 10.11923/j.issn.2095-4050.cjas2024-0065

• 土壤肥料 资源环境 生态 • 上一篇    下一篇

不同水分管理措施对中度镉污染农田水稻吸收和积累镉的影响

宋肖琴1(), 陈国安2(), 陈福明2, 叶正钱3   

  1. 1 义乌市种子和植物检疫站，浙江义乌 322000
    2 义乌市农技推广服务中心，浙江义乌 322000
    3 浙江农林大学/浙江省土壤污染生物修复重点实验室，杭州 311300
  • 收稿日期:2024-03-26 修回日期:2024-06-24 出版日期:2025-06-20 发布日期:2025-06-18
  • 通讯作者:
    陈国安，男，1981年出生，浙江义乌人，农艺师，本科，研究方向：主要从事植保、土肥、栽培技术研究及推广工作。通信地址：322000 浙江省义乌市江东中路369号，义乌市农技推广服务中心，Tel：0579-89059112，E-mail：。
  • 作者简介:

    宋肖琴，女，1985年出生，浙江义乌人，高级农艺师，主要从事植保和土壤肥料技术推广工作。通信地址：322000 浙江省义乌市江东中路369号，Tel：0579-89980098，E-mail：。

  • 基金资助:
    浙江省“领雁”研发攻关计划项目“非粮化耕地障碍因子消减及快速复耕技术-非粮化耕地复耕培肥提质关键技术研发及推广示范”(2023C02020); “2023年义乌市省级水稻安全利用技术试验及推广项目”(SJZJZC2023228GK)

The Effects of Different Water Management Measures on Absorption and Accumulation of Cadmium by Rice in Moderately Cadmium Polluted Farmland

SONG Xiaoqin1(), CHEN Guoan2(), CHEN Fuming2, YE Zhengqian3   

  1. 1 Yiwu Seed and Plant Quarantine Station, Yiwu Zhejiang 322000
    2 Yiwu Agricultural Technology Extension Service Center, Yiwu Zhejiang 322000
    3 Zhejiang A& F University/Key Laboratory of Bioremediation of Soil Pollution in Zhejiang Province, Hangzhou 311300
  • Received:2024-03-26 Revised:2024-06-24 Online:2025-06-20 Published:2025-06-18

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摘要：

为了研究不同水分管理措施在镉(Cd)中度污染农田中的应用效果，本试验采取了5种水分管理措施（全生育期淹水、湿润灌溉、阶段性湿润灌溉、分蘖—抽穗2次晒田和常规灌溉），进行室内盆栽试验，测定了水稻生长状况，水稻不同生育阶段（分蘖期、孕穗期、灌浆期和成熟期）各部位中Cd含量，计算Cd富集和转运系数及土壤pH和有机质变化情况。结果表明：在湿润灌溉处理下，水稻千粒重增加8.64%，显著降低水稻分蘖期根部、茎部和叶部中的Cd含量。与常规灌溉处理相比湿润灌溉能够显著降低成熟期水稻籽粒中Cd含量，降幅达78.83%(P<0.05)，全生育期淹水处理降低效果次之（降幅39.69%）。此外，全生育期淹水和湿润灌溉处理主要通过抑制Cd由茎部和叶部向籽粒的迁移，进而降低稻谷中的Cd含量。从水稻生产和实际情况出发，建议采用湿润灌溉作为Cd中度污染农田水稻种植的水分管理措施。研究旨在为Cd中度污染农田水稻种植提供理论依据和数据支撑。

关键词: 土壤重金属, 湿润灌溉, 富集系数, 水分管理, 粮食安全

Abstract:

The aim was to explore the application effects of different water management measures in cadmium (Cd) moderately polluted farmland and ensure food safety production. In this experiment, five water management measures (conventional irrigation, whole growth period flooding, moist irrigation, periodic moist irrigation and twice field drying at tillering-heading stage) were adopted to carry out the indoor pot experiments. The experiment measured the growth status of rice, the Cd content in different parts of rice at various growth stages (tillering stage, booting stage, filling stage and maturity stage), and calculated the Cd enrichment and transport coefficients as well as changes in soil pH and organic matter. The results showed that the moist irrigation treatment increased the 1000-grain weight of rice by 8.64%, and significantly reduced the Cd content in the roots, stems and leaves of rice at tillering stage. Compared with conventional irrigation treatment, moist irrigation could significantly reduce the Cd content in mature rice grains, with a decrease of 78.83% (P<0.05), followed by the whole growth period flooding treatment (with a decrease of 39.69%). In addition, the whole growth period flooding and moist irrigation treatments mainly reduced the Cd content in rice by inhibiting the migration of Cd from stems and leaves to grains. Based on rice production and actual situation, it was recommended to use moist irrigation as a water management measure for rice planting in moderately Cd-contaminated farmland.

Key words: soil heavy metals, moist irrigation, enrichment coefficient, water management, food safety