摘要
通过桶栽实验对粉煤灰施入砂姜黑土粉所引起的重金属污染进行了研究,结果表明:粉煤灰所含的重金属元素镉、铬、铅、汞、砷在土壤和小麦各器官中的分布趋势基本相同,大小顺序为:土壤>根>茎>鞘>叶>籽粒.通过建立这些有害元素在土壤和小麦各器官中的累积量与粉煤灰施用量之间的模拟方程(Y=47.7957+1.6652x-0.0526x2),得出粉煤灰的最佳施用量为2.4×10-5kg.hm-2,并对它们所引起的污染情况进行评价.
The heavy metal pollution caused by ShaJiang Black soil amended by fly ash was studied by barrel experientment. The result showeds that the trends of distribution of Cd , Cr , Pb , Hg , As in soil and each organ of wheat were kept in same step. The simulation equation between the residual of these harmful metals in soil and each organ of wheat and the amount of fly ash was established（ Y =47. 7957 ＋ 1. 6652x -0. 0526x^2）. The optimal amount of coal fly ash was 2.4 × 10^5 kg · hm^-2. Further residuals of harmful metal elements in soil and all organ of wheat were evaluated.
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2006年第4期429-433,共5页
Journal of Xinyang Normal University(Natural Science Edition)
基金
河南省杰出青年基金项目(0612003100)
关键词
粉煤灰
砂姜黑土
土壤改良
重金属
污染指数
coal fly ash
ShaJiang Black Soil
soil amendment
heavy metal
pollution index
