重工业城市农田生态系统中Hg污染及防治

在太原市三大农业区布点采集成熟的农作物籽粒 (玉米、高粱、水稻、小麦、谷子)和相应的农田土壤进行Hg含量的测定 ,分析Hg在土壤和作物中的迁移转化的关系。结果表明 ,土壤和作物中的Hg含量有显著相关 ,尤以水稻对Hg的吸收富集最强 ,玉米和谷子次之 ,小麦和高粱较弱。对太原市农田生态系统中的Hg含量进行评价 ,得出土壤Hg有轻微超标 ,其含量分别为水稻土>高粱土>玉米土>谷子土>小麦土 ,作物中Hg含量不超标。

Mercury Pollution and Its Control of Agriculture Eco-System in Heavy Industry City

Mercury content in several crop grains and farmland were measured and analyzed in Taiyuan agriculture area. The results showed that a significant correlation was observed between crop's grains and soils. Of these, rice had a strongest accumulation of the metal, and maize grain, wheat and sorghum were more passive than rice. Furthermore, Hg contents in the soils had a definite sequence in order: rice soil>sorghum soil>maize soil>grain soil>wheat soil.