摘要
为了研究自制免烧粉煤灰陶粒(比表面积17.038 m2/g)处理完生活污水后农用的可行性,设计了其作为栽培基质种植小白菜的试验,研究废料的施用量对小白菜生长、发芽和产量的影响。先对陶粒废料进行Cr、Cd、Hg、As和Pb的重金属和TN、TP、TK和有机质等养分进行检测,结果表明,各项指标均符合《城镇垃圾农用标准》(GB 8172-87),可以进行资源化利用。然后将其按照0%、10%、20%、30%、40%、50%6种质量分数同土壤均匀混合后栽培小白菜。结果显示,陶粒废料施用量为20%时,能有效提高小白菜抗虫害、抗倒伏的能力且增产效果最好,为59.69%。但随着施用量的增加,栽培基质抗旱保湿能力下降,反而会抑制种子发芽和幼苗生长。
In order to explore the feasibility of the homemade unburned fly ash ceramsite（SSA =17.038 m^2/g） after processing the sewage for agriculture,they were used as cultivation substrate to cultivate Brassica chinensis. The influence of seed germination rate,the growth and the yield were studied. Results showed that the heavy metals such as Cr,Cd,Hg,As,Pb and the nutrients like TN,TP,TK and the organic matter were within the national standard GB 8172-87,which proved the waste ceramsites could be recycled. The ceramsites were mixed with the soil according to six different proportions including 0%,10%,20%,30%,40% and 50%. The influence is obvious,and Brassica chinensis becomes more pest-resistant and lodging-resistant. It increased as high as 59.69% when the proportion was 20%. However the higher the proportion is,the weaker the drought-resistance is,which would also inhibits the seed germination as well as growth.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2016年第12期150-153,共4页
Environmental Science & Technology
基金
国家科技支撑计划项目(2012BAJ21B06)
关键词
粉煤灰
污泥
陶粒废料
资源化
小白菜
fly ash
sludge
waste ceramsite
recycling
Brassica chinensis
