摘要
利用堆肥返料、菇渣和市售腐熟剂作为促腐菌剂,研究了不同促腐菌剂对园林废弃物堆肥过程中堆肥理化性质和优势微生物群落变化的影响。结果表明,添加堆肥返料、菇渣促使堆体在第1天即快速升温至47.4和46.3℃,比对照(CK)高温期(>50℃)时间分别延长了2 d和3 d,而添加市售菌剂的堆体在第7天才升温至50.2℃仅比CK提前2 d进入高温期;相比于CK,堆肥结束时添加堆肥返料的T1处理中纤维素、半纤维素和木质素等降解率分别提高了21.5%、15.5%和22.3%,添加菇渣的T2提高了纤维素和木质素的降解率仅分别为5.2%和2.5%;添加市售菌剂的T3使堆体内纤维素、半纤维素和木质素降解率相较于CK分别提高了9.6%、2%和5.8%。添加堆肥返料或菇渣提高了堆体中木质纤维素降解菌(Sphingobacterium、Cellulosimicrobium、Thermobifida、Pseudallescheria)的相对丰度,抑制了有害菌群(Enterobacter、Myroides、Fusarium)繁殖,而添加市售菌剂的堆体仅提高了Pseudallescheria的相对丰度。Spearman相关性分析表明:Thermobifida和Cellulosimicrobium与纤维素和半纤维素含量呈负相关(P≤0.05);Myroides、Boeremia和Fusarium均与GI呈正相关(P<0.05);Pyxidiophora与全氮、全磷、全钾和GI呈正相关(P≤0.05)。因此,在园林废弃物堆肥过程中可采用堆肥返料或菇渣作为促腐菌剂来加速堆肥腐熟进程。
This paper uses mature compost,mushroom residue and commercially available decomposing agents as microbial inoculants to study the effects of different microbial inoculants on the physical and chemical properties of composting and the changes of dominant microbial communities during the composting process of garden waste.The results showed that the addition of mature compost and mushroom residue promoted the rapid heating of the pile to 47.4℃and 46.3℃on the first day,prolonging the high temperature period(>50℃)for 2 and 3 days respectively compared with the control(CK),while adding the compost of the commercially available fungus only heated up to 50.2℃on the 7th day and entered the high temperature period only two days earlier than CK;compared with CK,the degrading rate of cellulose,hemicellulose and lignin in T1 treatment at the end of the composting when the mature compost was added.The addition of mushroom residues in T2 treatment increased the degradation rates of cellulose and lignin by only 5.2%and 2.5%,respectively;the addition of commercially available microbial agents in T3 treatment increased the degrading rate of cellulose,hemicellulose and lignin by 9.6%,2%and 5.8%,respectively,compared with CK.Adding mature compost or mushroom residue increases the relative abundance of lignocellulose-degrading bacteria(Sphingobacterium,Cellulosimicrobium,Thermobifida,Pseudallescheria)in the pile,and inhibits the reproduction of harmful bacteria(Enterobacter,Myroides,Fusarium),while adding commercially available microbial agents to the pile body only increases the relative abundance of Pseudallescheria.Spearman correlation analysis showed that Thermobifida and Cellulosimicrobium were negatively correlated with cellulose and hemicellulose content(P<0.05);Myroides,Boeremia and Fusarium were all positively correlated with GI(P<0.05);Pyxidiophora was positively related to total nitrogen,total phosphorus,total potassium and GI(P<0.05).Therefore,in the process of composting garden waste,mature compost or mushroom
作者
夏金利
王岩
董春玲
刘海宁
唐航
尚韬
芦阿虔
XIA Jinli;WANG Yan;DONG Chunling;LIU Haining;TANG Hang;SHANG Tao;LU Aqian(School of Ecology and Environment, Zhengzhou University, Zhengzhou 450000, China)
出处
《河南农业大学学报》
CAS
CSCD
2021年第3期551-560,共10页
Journal of Henan Agricultural University
基金
河南省科技攻关项目(182102310048)。
关键词
园林废弃物
好氧堆肥
微生物菌剂
微生物群落
garden waste
aerobic composting
microbial inoculants
microbial community
