矿粮复合区土壤—水稻体系中重金属含量特征分析
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摘要
以徐州市北郊矿粮复合区采集的土壤和种植的水稻样品作为研究对象,分别对土壤及水稻籽实中镉、铬、锌、铅、铜等重金属含量进行分析和评价。采用SPSS软件对土壤及水稻籽实中重金属含量进行了相关性和显著性分析。结果表明,各采样点土壤除Cd轻度超标外,较为清洁;水稻籽实则受到各种重金属元素复合污染,其中Cr和Pb的超标率分别为100%和80%,污染现象较为严重。各重金属在土壤和籽实中的含量变化趋势具有一致性,但相关性均不显著。
The soil and rice seed samples were collected in mine-crop mixed area in northern suburb of Xuzhou in order to study and evaluate the concentrations of heavy metals,such as cadmium,chromium,zinc,lead and copper. SPSS software was used for the correlation and significance analyses of heavy metal contents in soil and rice seed. The results show that the soil is clean except for slight excess of Cd in sampling sites. The rice seeds are polluted by various heavy metal elements,among which Cr and Pb exceed 100% and 80% respectively,and the pollution was serious. The trend of the contents of heavy metals in soil and rice seed was consistent,but the correlation was not significant.
The soil and rice seed samples were collected in mine-crop mixed area in northern suburb of Xuzhou in order to study and evaluate the concentrations of heavy metals,such as cadmium,chromium,zinc,lead and copper. SPSS software was used for the correlation and significance analyses of heavy metal contents in soil and rice seed. The results show that the soil is clean except for slight excess of Cd in sampling sites. The rice seeds are polluted by various heavy metal elements,among which Cr and Pb exceed 100% and 80% respectively,and the pollution was serious. The trend of the contents of heavy metals in soil and rice seed was consistent,but the correlation was not significant.
引文
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[2]张素娟,肖玲,关帅朋,等.蓝田冶炼厂周边农田土壤重金属复合污染分析评价[J].干旱地区农业研究,2009(5):265-270.
[3]刘情,陈红艳.苏南典型区土壤—水稻系统中重金属迁移特征及定量模型研究[J].江苏科技,2016(5):20-25.
[4]Zhao K,Zhang W,Zhou L,et al.Modeling transferof heavy metals in soil-rice system and their risk assessment in paddy fields[J].Environmental Earth Sciences,2009,59(3):519-527.
[5]孙花,谭长银,黄道友,等.土壤有机质对土壤重金属积累、有效性及形态的影响[J].湖南师范大学:自然科学学报,2011,34(4):82-87.
[6]张满满,肖昕,谭敏,等.徐州北郊土壤重金属污染评价研究[J].北方园艺,2013(6):177-179.
[7]杨远.主要重金属在水稻土—水稻、小麦籽粒中的分布与聚集特征研究[D].成都:四川农业大学,2005.
[8]仲维科,樊耀波,王敏健.我国农作物的重金属污染及其防止对策[J].农业环境保护,2001(4):270-272.
[9]陈静文.公路陆域绿化带植物重金属分布规律及富集性研究[D].西安:长安大学,2003.