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中国农学通报 ›› 2022, Vol. 38 ›› Issue (3): 81-86.doi: 10.11924/j.issn.1000-6850.casb2021-0218

所属专题: 生物技术 土壤重金属污染 小麦 水稻

• 资源·环境·生态·土壤 • 上一篇    下一篇

石灰配施有机物料对稻麦轮作土壤镉影响研究

高琳琳1(), 王陈丝丝2, 张宁1, 胡含秀1, 马友华1()   

  1. 1安徽农业大学资源与环境学院,合肥 230036
    2休宁县农业综合行政执法大队,安徽黄山 245400
  • 收稿日期:2021-03-04 修回日期:2021-06-03 出版日期:2022-01-25 发布日期:2022-02-25
  • 通讯作者: 马友华
  • 作者简介:高琳琳,女,1993年出生,河北隆化人,硕士,研究方向:土壤重金属污染与修复。通信地址:230036 安徽省合肥市蜀山区长江西路130号 安徽农业大学,Tel:0551-65786289,E-mail: 1206077738@qq.com
  • 基金资助:
    农业部农业生态环境保护项目“安徽省农产品产地土壤重金属污染监测”(农财发[2013]16号)

Effect of Lime Application with Organic Materials on Soil Cadmium Form in Rice-wheat Rotation Fields

GAO Linlin1(), WANG Chensisi2, ZHANG Ning1, HU Hanxiu1, MA Youhua1()   

  1. 1School of Resources and Environment, Anhui Agricultural University, Hefei 230036
    2Xiuning County Agricultural Comprehensive Administrative Law Enforcement Team, Huangshan, Anhui 245400
  • Received:2021-03-04 Revised:2021-06-03 Online:2022-01-25 Published:2022-02-25
  • Contact: MA Youhua

摘要:

研究旨在开展探究田间试验条件下铜陵市矿区附近镉重度污染农田土壤经石灰和有机物料修复后土壤镉形态的变化,为农田镉污染提供依据。通过水稻和小麦生长田间试验,研究生物有机肥、生物炭、生物肥3种有机物料与石灰配施对稻麦轮作土壤中镉形态变化的影响。研究结果显示:石灰配合有机物料施用后,小麦季土壤酸碱度范围为pH 4.72~5.39,水稻季土壤为pH 6.30~7.25,土壤有效态镉含量显著降低(P<0.05),降幅分别为1.27%~14.71%和17.72%~33.22%,土壤镉的酸溶态等活性形态向残渣态转换,实现了对镉的钝化作用。有机物料配施石灰较单独施用石灰对土壤中镉的钝化效果好,在小麦季生物有机肥配施石灰的钝化效果最好,水稻季则是生物肥配施石灰的钝化效果更好。

关键词: 石灰, 有机物料, 镉污染, 稻麦轮作, 土壤

Abstract:

The study aims to explore the changes of cadmium form in heavily polluted farmland soil near the mining area of Tongling City after remediation with lime and organic materials under field experiment conditions, and provide a basis for the remediation of cadmium contaminated arable land. The soil cadmium morphological changes by applying bioorganic fertilizer, biochar and biofertilizer combined with lime in rice-wheat rotation field were studied respectively. The results showed that after the application of lime with organic materials, the soil pH range of wheat season was pH 4.72-5.39, while that of the rice season was pH 6.30-7.25. The available cadmium content in soil significantly decreased by 1.27%-14.71% and 17.72%-33.22%, respectively (P<0.05). The active forms of soil cadmium, such as acid-soluble state, converted to the residual state, realized the deactivation of cadmium. The passivation effect of lime with organic materials was better than that of lime alone, and the passivation effect of biological organic fertilizer with lime was the best in wheat season. By contrast, biological fertilizer with lime had the best passivation effect in rice season.

Key words: lime, organic materials, cadmium pollution, rice-wheat rotation, soil

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