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中国农学通报

中国农学通报 ›› 2025, Vol. 41 ›› Issue (16): 75-81.doi: 10.11924/j.issn.1000-6850.casb2024-0542

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

安徽沿江地区不同水稻品种镉吸收富集差异研究

谢君豪1(), 凌和1, 匡谢彬1, 张傲翔1, 孙蕤1, 高羽欣1, 陶荣浩2, 马友华1, 李江遐1()   

  1. 1 安徽农业大学资源与环境学院，合肥 230036
    2 华中农业大学资源与环境学院，武汉 430070
  • 收稿日期:2024-08-28 修回日期:2024-12-15 出版日期:2025-06-05 发布日期:2025-06-05
  • 通讯作者:
    李江遐，女，1973年出生，江西永新人，副教授，博士，主要从事植物营养生态及污染土壤生物修复研究。通信地址：230036 安徽省合肥市长江西路130号 安徽农业大学，Tel：0551-65786311，E-mail：。
  • 作者简介:

    谢君豪，男，1999年出生，安徽马鞍山人，硕士研究生，主要从事农田土壤修复研究。通信地址：230036 安徽省合肥市长江西路130号安徽农业大学，Tel：0551-65786595，E-mail：。

  • 基金资助:
    安徽省科技重大攻关项目“农田重金属污染高效纳米修复材料的开发与应用”(17030701053)

Differences in Cadmium Absorption and Accumulation Among Different Rice Varieties in Yangtze River Region of Anhui

XIE Junhao1(), LING He1, KUANG Xiebin1, ZHANG Aoxiang1, SUN Rui1, GAO Yuxin1, TAO Ronghao2, MA Youhua1, LI Jiangxia1()   

  1. 1 College of Resources and Environment, Anhui Agricultural University, Hefei 230036
    2 College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070
  • Received:2024-08-28 Revised:2024-12-15 Published:2025-06-05 Online:2025-06-05

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摘要： 为探讨不同水稻品种对镉吸收和富集的种间差异，以10个水稻品种为供试材料开展田间试验，比较轻度镉污染农田中不同水稻品种对镉吸收和富集的差异。结果表明，不同品种的水稻产量在7.60~10.77 t/hm2之间，产量最高的是‘两优5078’，显著高于其他品种(P<0.05)。不同水稻品种的糙米镉含量在0.177~0.503 mg/kg之间，其中‘镇糯29号’的糙米镉含量低于国家限量标准值(0.20 mg/kg)。不同水稻品种糙米对土壤全量镉的富集系数在0.281~0.858之间，富集系数均小于1，‘镇糯29号’的富集系数显著低于其他品种(P<0.05)。不同品种水稻成熟期根际土壤pH变化范围在5.49~6.93之间，平均值为6.27。根际土壤全量镉和有效态镉含量变化范围分别在0.407~0.827、0.180~0.293 mg/kg之间，平均值分别为0.634、0.252 mg/kg。对不同品种的水稻进行投入产出比分析，‘镇糯29号’的投入产出比达到了1.81，显著高于其他水稻品种(P<0.05)。研究表明，‘镇糯29号’可作为镉低积累水稻品种在该地区安全利用类耕地种植且具有较高的经济价值。

关键词: 镉低积累水稻品种, 筛选, 镉吸收富集, 产投比分析

Abstract:

To investigate the varietal differences in cadmium (Cd) absorption and accumulation among different rice varieties, a field experiment was conducted with 10 rice varieties in slightly Cd-contaminated farmland. The variations in Cd absorption and accumulation capacities were compared. The results demonstrated that grain yields of different rice varieties ranged from 7.60 to 10.77 t/hm2, with the highest yield observed in the cultivar ‘Liangyou 5078’, which was significantly higher than other varieties (P<0.05). The Cd content in brown rice of different varieties ranged from 0.177 to 0.503 mg/kg, with the Cd concentration in ‘Zhennuo 29’ being lower than the national limit standard (0.20 mg/kg). The enrichment factors of brown rice for total soil cadmium (Cd) in different rice varieties ranged from 0.281 to 0.858, all below 1. The enrichment factor of ‘Zhennuo 29’ was significantly lower than other varieties (P<0.05). Rhizosphere Soil pH values at the maturity stage varied between 5.49 and 6.93 across varieties, with a mean value of 6.27. The total Cd and available Cd contents in soil ranged from 0.407 to 0.827 mg/kg and 0.180 to 0.293 mg/kg, respectively, with average values of 0.634 mg/kg and 0.252 mg/kg. Through input-output ratio analysis of different rice varieties, the ratio for ‘Zhennuo 29’ reached 1.81, which was significantly higher than other varieties (P<0.05). The study demonstrates that ‘Zhennuo 29’ can be cultivated as a low-Cd-accumulating rice variety in safe utilization farmland in the region with high economic value.

Key words: low-Cd-accumulating rice varieties, screening, Cd absorption and enrichment, input-output ratio analysis