粉煤灰所含有害元素在土壤和小麦器官中的残留及评价

Residues of harmful elements in coal fly ash in soil and organs of winter wheat and its evaluation

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.

Abstract: 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...