CHEN Xiao-yun,ZHANG Ya-wen,ZHAN De-jiang,et al.Study on Evaluation of Soil Heavy Metal Pollution of Greenhouse Vegetable in North China[J].Northern Horticulture,2014,38(01):165-169.
辽宁海城设施蔬菜土壤重金属污染评价研究
- Title:
- Study on Evaluation of Soil Heavy Metal Pollution of Greenhouse Vegetable in North China
- 文章编号:
- 1001-0009(2014)01-0165-05
- Keywords:
- protected vegetable; soil; heavy metal; cultivation years; fertilizing
- 分类号:
- S 151.9+5
- 文献标志码:
- A
- 摘要:
- 对采集于辽宁省海城市典型设施种植基地1~10 a土壤及周边陆地大田种植作物土壤进行营养元素、重金属元素含量的检测；并对该地区设施蔬菜土壤采用《无公害蔬菜产地环境要求》及《绿色食品产地环境质量标准》等标准进行了评价。结果表明：重金属元素含量之间多呈正相关关系，其中Hg、Cd、Cu元素之间相关性达到了显著水平(P<0.05)，除As、Cr元素外，其它重金属含量均与大棚使用年限呈正相关关系；与棚外露地土壤相比，棚内土壤重金属元素含量明显高于自然背景值，部分年限的蔬菜大棚土壤Hg、Cd、Cu元素含量出现超标的现象；超标的重金属Hg、Cd、Cu含量与土壤有机质、全氮、全磷含量呈正相关关系，且均达到极显著水平(P<0.01)，证明了大量施肥可能是导致蔬菜大棚土壤中重金属元素含量升高的主要原因。
- Abstract:
- With 1~10 cultivation years soil from Liaoning typical facilities planting base and the surrounding crop field as samples,the content of the nutrient and the heavy metal in them were determined,and it were evaluated by Pollution-free Vegetable Production Requirements and Environmental Quality of Green Food.The results showed that there was positive correlation among the content of heavy metals,especially among Hg,Cd,Cu (P<0.05).Except for As and Cr,the content of other heavy metal elements had positive correlation with cultivation years of greenhouse.Compared with soil outside the greenhouse,the content of heavy metal elements in the greenhouse soil were all significantly higher than that of the natural background value.Hg,Cd,Cu in the greenhouse soil with several years significantly exceeded the standard and had significantly positive correlation with the content of the organic matter,nitrogen and phosphorus,reaching significant difference at 0.01 level.It was proved that heavy fertilizing may be the main cause of the increasing heavy metal content in the greenhouse soil.
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备注/Memo
第一作者简介：陈晓云（1964-），女，研究员，现主要从事农业生态和农产品质量安全等研究工作。E-mail:chenxy308@sohu.com.