浙江农业学报 ›› 2024, Vol. 36 ›› Issue (1): 1-8.DOI: 10.3969/j.issn.1004-1524.20230079

• 作物科学 • 上一篇    下一篇

不同钝化产品对水稻生产中镉、铅、砷的钝化效果

杨西帆1,2(), 郭彬2, 裘高扬2, 刘俊丽2, 童文彬3,*(), 杨海峻3, 祝伟东3, 毛聪妍3   

  1. 1.浙江工业大学 环境学院,浙江 杭州 310032
    2.浙江省农业科学院 环境资源与土壤肥料研究所,浙江 杭州 310021
    3.衢州市衢江区农业农村局,浙江 衢州 324022
  • 收稿日期:2023-01-19 出版日期:2024-01-25 发布日期:2024-02-18
  • 作者简介:杨西帆(1998—),男,山东聊城人,硕士,主要从事受污染耕地安全利用研究。E-mail: 2112027172@zjut.edu.cn
  • 通讯作者: * 童文彬,E-mail:zjqztwb@163.com
  • 基金资助:
    衢州市衢江区农业局财政专项(2021R20A80D01);省部共建农产品质量安全危害因子与风险防控国家重点实验室专项

Inhibiting effects of immobilization agents on cadmium, lead and arsenic in rice production

YANG Xifan1,2(), GUO Bin2, QIU Gaoyang2, LIU Junli2, TONG Wenbin3,*(), YANG Haijun3, ZHU Weidong3, MAO Congyan3   

  1. 1. College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
    2. Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    3. Bureau of Agriculture and Rural Affairs of Qujiang Distrcit, Quzhou City, Quzhou 324022, Zhejiang, China
  • Received:2023-01-19 Online:2024-01-25 Published:2024-02-18

摘要:

采用田间试验,持续2年(2021—2022年)研究了市售6种钝化剂不同施用量(0、2 250、4 500、6 750 kg·hm-2)对土壤中镉(Cd)、铅(Pb)、砷(As)有效态含量,土壤pH值,及稻米Cd、Pb、As含量的影响。结果表明,选择适宜用量的钝化剂可显著(P<0.05)提高土壤pH值,降低土壤有效态Cd、Pb、As含量。其中,施用6 750 kg·hm-2长效型钝化剂的效果在2021年最优,土壤pH值由5.00提高至6.98,土壤有效态Cd、Pb含量分别显著降低82.2%和98.6%。此外,长效型钝化剂在4 500 kg·hm-2用量下,第二年的稻米镉含量仍可显著降低90.8%。综上,在对比的6种钝化剂中,长效型钝化剂阻控水稻籽粒Cd富集的效果和持效性最优,推测与其碳酸钙含量较高有关。

关键词: 水稻, 重金属, 钝化剂, 碳酸钙

Abstract:

In the present study, a field experiment was conducted with different application rates (0, 2 250, 4 500, 6 750 kg·hm-2) of commercial immobilization agents to examine their inhibiting effect on soil available cadmium (Cd), lead (Pb), arsenic (As) contents, soil pH value and Cd, Pb, As contents in rice grains for 2 years (2021—2022). It was shown that application of appropriate rate of immobilization agents significantly (P<0.05) increased soil pH value and decreased soil available Cd, Pb, As contents in soil. Among the 6 immobilization agents, the best effect in 2021 was noted in the treatment of application of 6 750 kg·hm-2 long-acting passivator, as the soil pH value was significanlty increased from 5.00 to 6.98, the soil available Cd, Pb contents were significantly decreased by 82.2%, 98.6%, respectively. Besides, in 2022, application of 4 550 kg·hm-2 long-acting passivator also significantly decreased Cd content in rice grains by 90.8%. In general, the long-acting passivator had the best effect and persistence among all the used immobilization agent, which might be related to its high content of calcium carbonate (CaCO3).

Key words: rice, heavy metal, immobilization agents, calcium carbonate

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