期刊
BIORESOURCE TECHNOLOGY
卷 320, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.124402
关键词
Psychrotrophic fungi; Pig manure compost; Cold-active cellulase; Fungal community; Low-temperature
资金
- National Natural Science Fund of China [41771559, 42071268]
The study found that inoculating compost with newly identified psychrotrophic fungal strains at low temperatures can enhance compost maturity and improve fungal community structure. The key physicochemical parameters influencing compost maturity were the germination index, total phosphorus, total potassium, and total nitrogen.
This study investigated the effects of applying psychrotrophic cellulose-degrading fungi on cellulase production, fungal community structure, and maturity of pig manure (PM) compost under low-temperature conditions. Three psychrotrophic fungal strains were isolated and identified, and after the cold-active cellulase production conditions were optimized, they were inoculated into PM compost. While the control (CK) compost temperature failed to reach the thermophilic stage, the inoculated compost temperature reached it within 3 days and was maintained for up to 17 days. Fungal inoculants improved fungal community structure at the end of composting, as suggested by network analysis. Principal component analysis revealed that the germination index (GI), total phosphorus (TP), total potassium (TK), and total nitrogen (TN) were the most influential physicochemical parameters affecting compost maturity. The results of the compost products reflected the suitability of the compost as a fertilizer. This study indicated that newly identified strains positively impacted composting at low temperatures.
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