摘要
将粉煤灰分别与污泥、酒糟按4∶1的质量比混合组成新型复垦基质,利用盆栽试验研究了该基质上苜蓿、棉花、高羊茅、早熟禾的生长情况以及基质主要化学性质变化。结果表明:4种植物均可在基质中生长,而且基质中生长的植物叶绿素含量均超过对照;种植前后基质中的有机质含量变化不大,而速效养分含量由于灌溉和雨水的淋洗有所降低,但仍维持较高水平,盐分含量明显降低;从测定的A s、C r、Pb、Cd、Cu、Zn的含量来看,除Cd外均低于土壤环境质量二级标准值。总之,该基质能够基本满足植物生长的需要,但最好种植非食用植物。这不仅开辟了粉煤灰、酒糟、污泥农业利用的新途径,而且为采煤沉陷地的修复提供了以废治废、节土造田的新理论与模式。
Fly ash was mixed separately with sewage sludge and distillers＇ grains in a ratio of 4 ： 1 to get new reclaiming substrates, the growth of Medicago sativa L. , Cotton, Festuca arundinacea, Poa pratensis L. in the substrates and the main characteristics of the substrates were studied by the pot experiments. The results showed that the plants could grow in the substrates, chlorophyll content of the plant in the substrates all exceeded that of the plant in the soil, few change was observed with the organic matter content in the substrates, available nutrient content reduced because of the leaching by irrigation and rainwater. But they still kept high contents compared with their contents in soil. The salt content reduced obviously in the substrates, the contents of As, Pb, Cd, Cu, Zn except Cd were lower than those of the Soil Environment Quality Standards Ⅱ . In conclusion, the substrates could basically meet the plant growth. But it had better to plant the non-edible plants.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2006年第4期62-65,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
山东省教育厅科技攻关资助项目(J02L07)
关键词
沉陷地
复垦
粉煤灰
污泥
酒糟
subsidence land
reclaiming
fly ash
sewage sludge
distillers＇ grains
