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微生物菌群发酵稻秸制备有机肥的研究
孙芬芬,周丽蓉,伍海全,罗雪,雷泞菲
0
(成都理工大学材料与化学化工学院,成都 610059;四川蓉加川大环保工程咨询设计有限公司,成都 610045; 四川大学建筑与环境学院,成都 610065)
摘要:
针对稻草秸秆作为饲料应用价值低及资源化利用中单一菌种发酵降解低等问题,研究复合微生物菌群降解稻草秸秆快速还田的最优腐解发酵条件并评价其降解效果。结果表明,粉碎的稻草秸秆固体培养基中加入0.2%的MgSO4`7H2O、0.8%的KH2PO4及2.0%的尿素;加水量为1:1.5;腐解初始温度为30℃;初始pH为7.0;接种复合微生物菌液为10:3(kg·L-1),复合菌液为枯草芽孢杆菌、热带假丝酵母、白腐真菌、黑曲霉以菌液3:1:1:1组合;好氧发酵周期为25 d。发酵结束后的固态基质中C/N比值降低83%,木质素、纤维素和半纤维素下降53.56%、50.86%和49.33%;铵态氮、有效磷、速效钾增加1.68 g·kg-1、0.24 g·kg-1和25.25 g·kg-1。此复合菌群降解稻草秸秆迅速,腐解产物可作为有机肥应用于土壤改良。
关键词:  稻草秸秆  复合微生物菌群  好氧发酵  有机肥
DOI:10.13610/j.cnki.1672-352x.20161205.017
基金项目:四川省科技厅基金项目( 2014FZ0027)资助。
Study on fermentation of rice straw turning to organic fertilizer by multi-microorganism
SUN Fenfen,ZHOU Lirong,WU Haiquan,LUO Xue,LEI Ningfei
(College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059;Sichuan Rongjiachuanda Environmental Engineering and Consulting and Design Co., Ltd, Chengdu 610045; College of Architecture and Environment, Sichuan University, Chengdu 610065)
Abstract:
The aim was to study the best fermentation condition of rice straw by multi-microorganism and evaluate the degradation effect for the current problem that rice straw as fodder application value and fermentation degradation rate are all low. Result: Solid culture medium of crushing rice straw added 0.2% MgSO4`7H2O, 0.8% KH2PO4 and 2.0% urea. The ratio of the nutrients and water was 1:1.5, the ferment temperature was 30℃, the initial pH was 7.0, the ratio of inoculation was 10:3(kg·L-1), Bacillus subtilis, Candida tropicalis, White-rot fungi and Aspergillus niger are mixed with 3:1:1:1. The ferment time was 20 days. After the fermentation, the solid matrix of C/N reduced by 83%. Lignin, Cellulose and hemicellulose content respectively dropped 53.56%, 50.86% and 49.33%. Meanwhile, Ammonium Nitrogen, available phosphorus and rapid available potassium contents respectively added 1.68g·kg-1, 0.24 g·kg-1 and 25.25 g·kg-1. The compound bacteria in this paper degraded the straw effectively. The decomposition products can be used as organic fertilize in agriculture field.
Key words:  rice straw  multi-microorganism  aerobic fermentation  returning to field

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