摘要
选用猪粪和牛粪与小麦秸秆分别按体积比75∶25和50∶50进行配合,在接种和不接种微生物条件下进行堆腐试验。结果表明,随着堆腐的进行,各处理总有机碳(TOC)含量均呈下降趋势,但腐殖物质碳质量占TOC质量的比例呈增加趋势,接种微生物促进了TOC的矿化和腐殖质的形成。在堆腐过程中,牛粪与秸秆2种配比处理胡敏酸/富里酸含量(H/F)比值随着堆腐进程均呈现上升趋势,而猪粪与秸秆2种配比处理H/F比值均呈现先上升后下降趋势。在堆腐结束时,接种微生物处理H/F比值均比不接种微生物处理高,说明接种微生物有利于胡敏酸的形成。从接种微生物促进腐殖质形成的效果来看,牛粪比猪粪更明显。
Mixtures of pig or cow manure and wheat straw,prepared in two different ratios,75 ∶ 25 and 50 ∶ 50,were used in a composting experiment,with or without inoculation of efficient cellulose-lignin degrading bacteria.The experiment lasted for 28 days.Results show that with composting going on,the total organic carbon （TOC） displayed a declining trend in all the treatments,while humus carbon increased its proportion in TOC ; Inoculation of the microbes promoted mineralization of TOC and formation of humus.The humic substances accumulated more in the mixtures with microbial inoculation than without inoculation,which shows that the microbial treatment tends to increase the proportion of humic substances.The ratio of humic acid to fulvic acid （H/F） increased with the decomposition process in the mixture of cow manure and wheat straw,while it increased first and then decreased in the mixture of pig manure and wheat straw.At the end of the composting,the treatments with inoculation were higher in H/F than those without inoculation,indicating that microbial inoculation promoted humic acid formation.To sum up,a high proportion （75 ∶ 25） of manure in mixture plus microbial inoculation can promote formation of humic substances,which is more obvious with the mixture of cow manure and wheat straw than with the mixture of pig manure and wheat straw.
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2014年第4期541-544,共4页
Journal of Ecology and Rural Environment
基金
"十二五"国家科技支撑计划(2012BAD14B11)
陕西省科技统筹创新工程计划(2011KTDZ02-01-04)
关键词
猪粪
牛粪
小麦秸秆
堆腐过程
腐殖物质
cow manure
pig manure
wheat straw
composting process
humic substance
