模拟酸雨及施磷对水稻土中汞的淋溶特性影响研究  

Leaching properties of Hg in paddy-soil under influence of acid rain and phosphorus

作　　者：陶春军[1] 周涛发[2] 李湘凌[2] 陈永宁[1] 陈兴仁[1] 贾十军[1] 陈富荣[1] 袁峰[2] 

机构地区：[1]安徽省地质调查院,安徽合肥230001 [2]合肥工业大学资源与环境工程学院,安徽合肥230009

出　　处：《资源调查与环境》2008年第2期139-144,共6页Resources Survey & Environment

基　　金：中国地质调查局国土资源大调查项目(编号JH2005-3);安徽省优秀青年科技基金资助

摘　　要：采用pH3.0、pH4.5与对照pH 5.6的3种模拟酸雨淋溶土柱的方法,研究了酸雨及含磷酸雨淋溶下合肥市郊水稻土中汞的释放特征与规律。结果表明:经过相当于1980降水量的淋溶后,汞释放量总体上是随着酸雨强度增加累积淋溶量的增加。酸雨作用下,施磷量越多土壤中汞的淋失总量越大。在酸雨及施磷条件下,大兴地区黄褐土Hg较义城地区水稻土易于淋失。A soil leaching column experiment has been designed to investigate the release of Hg from pad- dy-soil in suburb of Hefei city under the influence of simulated acid rain. Compared with pH 5.6 rain ,pH 3.0 and pH 4.5 acid rain were studied. Under leaching similar to 1980 mm rainfall in the experiment, the release of Hg from the paddy-soil increases with the increasing of the acid rain strength. Promoting the release of Hg can be due to the enhancement of the phosphate quantity increased. The release amount of Hg differs with soil types. The leaching effect is more remarkable for soil sample from Daxing area than for that from Yichen area.

关 键 词：酸雨 水稻土 磷 淋溶 

分 类 号：S153.6[农业科学—土壤学]