山东寿光农业利用方式对土壤砷累积的影响  

Arsenic accumulation in different agricultural soils in Shouguang of Shandong Province

作　　者：曾希柏[1] 李莲芳[1] 白玲玉[1] 梅旭荣[1] 杨佳波[1] 胡留杰[1] 

机构地区：[1]中国农业科学院农业环境与可持续发展研究所农业部农业环境与气候变化重点开放实验室,北京100081

出　　处：《应用生态学报》2007年第2期310-316,共7页Chinese Journal of Applied Ecology

基　　金：国家"十五"科技攻关资助项目(2004BA516A19)

摘　　要：对山东省寿光市不同农业利用方式下土壤砷的累积状况进行了调查.结果表明,寿光市农田土壤砷平均含量为9.63mg.kg-1,最高值为15.15mg.kg-1,以山东省当地的土壤背景值(9.3mg.kg-1)为基准,有53.1%的样本出现了砷富集现象.所调查地区土壤砷含量的空间分布为西、东、北部较高,中部居中,南部最低.不同农业利用方式下土壤砷含量呈现出明显差异,按由高到低顺序排列为小麦/玉米地>棉花地>设施菜地>露天菜地,分析呈现这种规律的原因发现,土壤砷含量的差异除了受当地土壤砷背景值影响外,还不同程度地受农业活动的影响.随着设施菜地种植年限的增加,土壤砷含量呈增加趋势.猪粪和鸡粪中的砷可能是设施菜地土壤砷累积的重要来源,施用豆肥可在一定程度上减少土壤砷的累积.The study on the soil arsenic （As） accumulation under different types of agricultural use in Shouguang of Shandong Province showed that farmland soils had an average As content of 9. 63mg·kg^-1 , with the highest being 15.15 mg·kg^-1. Compared with the local background value （9.3 mg As ·kg^-1）, 53.1% of soil samples was detected as As enrichment. The soil As content was high in the west, east and north parts of Shouguang, relatively lower in the middle part, and the lowest in the south part. Different agricultural use had an obvious effect on the soil As content, which was decreased in the order of wheat/maize land 〉 cotton field 〉 protected vegetable land 〉 uncovered vegetable land. Such a difference in soil As content was mainly affected by agricultural activities. With the increasing year of vegetable planting, soil As content had an increasing trend, because the As input from pig dung and chicken feces was the main source of soil As in protected vegetable land. Soil As enrichment could be reduced to some degree by applying soybean cake fertilizer.

关 键 词：土壤 砷 分布 设施菜地 寿光 

分 类 号：X53[环境科学与工程—环境工程]