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首页> 外文期刊>Environmental engineering and management journal >MITIGATION OF HEAVY METAL ACCUMULATION IN RICE GRAIN WITH SILICON IN ANIMAL MANURE FERTILIZED FIELD
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MITIGATION OF HEAVY METAL ACCUMULATION IN RICE GRAIN WITH SILICON IN ANIMAL MANURE FERTILIZED FIELD

机译：硅肥在动物粪肥田中减轻水稻中重金属的积累

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摘要

Animal manure is widely used as organic fertilizer for crops. However, high concentrations of heavy metals in animal manure are of great concern. In this study, we found that chicken and pig manure compost contain high concentrations of arsenic (As), cadmium (Cd), copper (Cu) and zinc (Zn), and the concentrations of these heavy metals in the pig manure were higher than those in the chicken manure. Chicken or pig manure compost fertilization elevated the concentrations of these heavy metals in the paddy soil and polished rice grains. Silicon (Si) application at the tilling stage significantly mitigated the accumulation of As, Cd, Ni, Cu and Zn in polished rice grains. In the chicken manure-fertilized rice grains, Si application decreased As, Cd, Ni, Cu and Zn concentrations by 25.9%, 29.6%, 33.4%, 17.0% and 16.3%, respectively. In the pig manure fertilized rice grains, these parameters decreased by 23.2%, 29.8%, 30.8%, 18.7% and 16.4%, respectively. These results indicate that Si application could be a feasible and effective approach to mitigate heavy metal accumulation in the rice grains produced in animal manure-fertilized paddy fields.
机译：动物粪便被广泛用作农作物的有机肥料。然而，动物粪便中高浓度的重金属引起极大关注。在这项研究中，我们发现鸡粪和猪粪堆肥中都含有高浓度的砷（As），镉（Cd），铜（Cu）和锌（Zn），并且猪粪中这些重金属的浓度高于那些在鸡粪里。鸡粪或猪粪堆肥的施肥提高了水稻土和精米粒中这些重金属的浓度。在耕作阶段施用硅（Si）可以显着减轻精制稻米中As，Cd，Ni，Cu和Zn的积累。在鸡粪施肥的稻米中，硅的施用分别使砷，镉，镍，铜和锌的浓度分别降低了25.9％，29.6％，33.4％，17.0％和16.3％。在猪粪施肥的稻谷中，这些参数分别降低了23.2％，29.8％，30.8％，18.7％和16.4％。这些结果表明，施用硅可能是减轻动物粪肥田中稻米中重金属积累的一种可行而有效的方法。

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  • 来源
    《Environmental engineering and management journal》 |2016年第10期|2223-2229|共7页
  • 作者

    Duan Guilan; Zhang Hongmei; Shen Yaqiang; Li Gang; Wang Hui; Cheng Wangda;

  • 作者单位

    Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, 18 Shuangqing Rd, Beijing 100085, Peoples R China;

    Jiaxing Acad Agr Sci, Xiuzhou Dist 314016, Jiaxing, Peoples R China;

    Jiaxing Acad Agr Sci, Xiuzhou Dist 314016, Jiaxing, Peoples R China;

    Chinese Acad Sci, Inst Urban Environm, 1799 Jimei Rd, Xiamen 361021, Peoples R China;

    Jiaxing Acad Agr Sci, Xiuzhou Dist 314016, Jiaxing, Peoples R China;

    Jiaxing Acad Agr Sci, Xiuzhou Dist 314016, Jiaxing, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Animal manure; heavy metal; rice; silicon;

    机译：动物粪便;重金属;大米;硅;

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