湖南省商品有机肥料质量与重金属污染程度分析
作者:
作者单位:

(1.湖南省土壤肥料研究所 /湖南省新型肥料工程技术研究中心,湖南 长沙 410125;2.长沙环境保护职业技术学院,湖南 长沙 410004)

作者简介:

孙玉桃(1963-),女,湖南长沙人,副研究员,本科,主要从事植物营养、作物栽培及农化检测等研究。E-mail:1016462984@qq.com。

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基金项目:

基金项目:“十三五”国家重点研发计划(2016YFD0200809,2018YFD0301006);湖南省农业科技创新资金项目(2018ZD02-2, 2SO4-2019LS03-1)。


Analysis of commercial organic fertilizer quality and degree of heavy metal contamination of soil by adding commercial organic fertilizer in Hunan province
Author:
Affiliation:

(1.Soil and FertilizerInstitute of Hunan Province/New Type Fertilizer Engineering and Technological Research Center of Hunan,ChangshaHunan410125;2.Changsha Environmental Protection VocationalCollege,Changsha Hunan410004)

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    摘要:

    通过检测湖南省 2013~ 2017年的 663个商品有机肥料样品,分析与研究湖南省有机肥料的质量和重金属含量状况。结果表明,663个样品的有机质质量分数、总养分、水分、酸碱度和重金属 5项指标的总体合格率为 75.9%,产品出现不合格指标的分布较为分散,导致不合格产品率较高,建议加强对商品有机肥料质量的监督管理。按照现行 NY 525-2012有机肥料中重金属限量标准,663个样品中 5种重金属As、Hg、Pb、Cd、Cr含量总体超标状况为Cd>Pb>As>Cr>Hg,超标率较低,均在 5.0%以内。663个有机肥样品质量受 Cd、Pb和 As污染的风险较大,相关生产企业及监管部门应加强对肥料中 Cd、Pb、As的监测。663个有机肥样品中重金属的单因子污染指数和内梅罗综合污染指数 P综均在安全级别范围。可见,所检测的 663个商品有机肥样品中重金属污染程度发展趋势良好,可以在农业生产中安全使用。

    Abstract:

    In order to analyze dynamic change of commercial organic fertilizer quality and heavy metal contents,the 663organic fertilizer samples from 2013 to 2017 were determined in Hunanprovince.The results showed that the overall qualifiedrate of the organic matter content,total nutrients,water content,pH and heavy metal contents was75.9%,and theunqualified indexes were relatively scattered in all of thesamples.This scatter caused a higher rate of unqualifiedproducts.Therefore,the suggestion is proposed to strengthen the supervision and management of the quality of commercial organicfertilizers.The order of over standard rate of five heavy metal content was:Cd>Pb>As>Cr>Hg,but the exceeding rates offive heavy metals were relativelylow,all less than5.0%.The quality of the 663 organic fertilizer samples was at greater riskof contamination byCd,Pb andAs.Thus,the relevant production enterprises and regulatory departments should strengthenmonitoring ofCd,Pb and As in fertilizers.The single factor pollution index and Nemerow Synthetical Pollution Index ofheavy metals in the 663 organic fertilizer samples were in the safetyranges.It showed the development trend of heavy metal pollution of the 663 commercial organic fertilizer samples tested was good and could be safely used in agricultural production.

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孙玉桃,黄凤球,杨茜,李海露,张春霞,范美蓉.湖南省商品有机肥料质量与重金属污染程度分析[J].中国土壤与肥料,2020,(3):176-181.

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  • 收稿日期:2019-10-08
  • 最后修改日期:
  • 录用日期:2020-01-11
  • 在线发布日期: 2020-07-13
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