不同释钾菌对粉煤灰的生态效应  

Ecological effects of potassium-dissolving bacteria on coal fly ash

作　　者：胡俊波[1] 毕银丽[2] 张海[1] 

机构地区：[1]西北农林科技大学资源与环境学院,杨凌712100 [2]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《环境工程学报》2009年第6期1109-1112,共4页Chinese Journal of Environmental Engineering

基　　金：国家高技术研究发展计划(863)项目(2006AA06Z372);教育部新世纪优秀人才计划项目(NCET-06-0200);教育部霍英东青年教师基金(111081)

摘　　要：粉煤灰治理难度大,但它含有植物生长必需的营养元素钾,将其就地资源化生物利用是一条较好的途径。释钾菌是一种能把矿物中的难溶性钾转化为有效钾的细菌,从土壤中筛选出2种释钾菌,经过在粉煤灰基质中的驯化培养,通过盆栽试验种植紫花苜蓿,比较不同菌株对粉煤灰的改良作用及其对植物生长的影响。结果表明,筛选出的菌株C6对粉煤灰中速效钾的释放效果明显,降低了基质pH,显著地促进了植物的生长,对粉煤灰生态修复具有重要意义。Coal fly ash has essential nutrients for plant growth. It is a good way to take it as the medium for ecological restoration. Potassium-dissolving bacteria can release potassium from minerals and translate insoluble potassium into avaliable K for plant uptake. Two strains were selected from soil. They can release K^＋ from the fly ash in the laboratory. A pot experiment was carried out to study the ecological effects of the potsssium-dissolring strain on coal fly ash. The results showed that one strain named C6 can improve plant growth, release potassium,and decrease pH significantly. It will cause a good significance to apply potassium-dissolving bacteria in coal fly ash to achieve ecological restoration.

关 键 词：粉煤灰 释钾菌 生态效应 

分 类 号：X705[环境科学与工程—环境工程]