铜铅镉砷在紫色丘陵农田中的径流迁移  

Translocation of Cu, Pb, Cd anb As in a Purple Soil in Hill Region

作　　者：李英伦[1] 蒲富永[1] 

机构地区：[1]西南农业大学土化系,重庆630716

出　　处：《农业环境保护》1992年第2期66-71,60,共7页Agro-Environmental Protection

摘　　要：通过天然降雨的径流小区试验,探求铜,铅,镉、砷在土表流、壤中流和固体径流中的含量及迁移量。用实测的元素含量与紫色土区域的径流量推算区域输出量。用盆栽试验中元素的土、水含量平衡关系,评价了水稻生长的元素临界含量是否对水环境造成影响。结果表明,农田污染以稻田最为突出,即使在稻田土壤处于临界含量条件下,其稻田径流水质也能达到国家地面水质三级标准。In natural conditions in Chongqing area, a runoff experiment was carried out to investigate the surface runoff, subsurface flow and solid runoff of Cu, Pb, Cd and As. The results showed that more than 95% of migration of the four elements was carried away by suspending solids. In liquid runoff, copper mainly ran off through subsurface flow, while Pb and Cd through surface runoff. Paddy soil could accumulat these elements in this area. tt was suggested that the quality of runoff water matches the grade Ⅲ of the national surface water quality standard, even though the content of there elements in paddy soil reaches their critical concentration.

关 键 词：铜 铅 镉 砷 径流迁移 紫色土 

分 类 号：X503.231[环境科学与工程—环境工程]