文献类型： 中文期刊
关键词： 设施土壤;;蔬菜;;重金属;;累积;;肥料
期刊名称：环境科学
ISSN： 0250-3301
年卷期： 2018 年 第39卷 卷 第6期 期
页码：
收录情况： EI（2021版） ; 北大核心（2020版） ; CSCD（2020-2021年度） ; 科技核心（2020版）
摘要： 选取吉林四平市典型设施蔬菜生产系统为研究对象，采集不同土地利用方式下的设施菜地、玉米地和森林土壤样本124份进行比较分析，同步采集设施蔬菜（81份）、肥料（50份）及灌溉水样品（10份），利用电感耦合等离子体质谱技术检测重金属含量，以揭示设施土壤及相应蔬菜中重金属的累积特征。结果表明，研究区域设施菜地中除铅（Pb）以外的重金属元素含量显著高于玉米地和林地，设施土壤重金属镉（Cd）、铜（Cu）、铬（Cr）、镍（Ni）、锌（Zn）均出现了不同程度的累积，研究区域不同类型土壤Cd平均含量为0.45mg•kg-1，约42.8%的样本Cd超过温室蔬菜产地环境质量评价标准(HJ 333-2006)，其他重金属均未出现超标现象；不同类型蔬菜比较，叶菜类Cd含量为0.033 mg kg-1(以鲜重计)，明显高于果菜类，2.5%的蔬菜Cd超标，1.2%蔬菜存在Pb超标，其他重金属均未出现超标现象；随着设施利用年限的增加，土壤酸化愈加明显，设施土壤和蔬菜中重金属呈同步累积趋势；设施蔬菜重金属含量受土壤pH、有机质的显著影响；含高量重金属有机肥和化肥的大量施用是设施土壤重金属累积及设施蔬菜风险增加的重要原因。
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