Abstract:
【Objective】 The primary objective of the study was to promote the resource utilization of lawn mown waste and to analyze the effects of fungal community succession on humus synthesis during aerobic and aerobic-anaerobic couped composting.【Method】 Lawn mown waste was used as the main material and three treatments,A(lawn mown waste alone),B(90% lawn mown waste + 10% corn stover,w/w) and C(80% lawn mown waste + 20% corn stover,w/w) were set up for aerobic and aerobicanaerobic coupled composting.【Result】 The aerobic composting(B and C) could accelerate the humic degree and promote the synthesis of more humic acid,and C was better than B. The redundancy analysis of the dominant fungal community and humus components indicated that aerobic composting(B and C) better promoted the relative abundance of lignocellulose-degrading fungi and inhibited the relative abundance of pathogenic fungi,to promote the degradation of fulvic acid and humin to synthesize more humic acid.FUNGUILD analysis showed that aerobic composting(B and C) could effectively inactivate fungal pathogens and increase the relative abundance of saprophytic function.【Conclusion】 Therefore,the addition of 10%~20% corn stover to lawn mown waste for aerobic composting could improve the flora and nutrient pattern of fungi,enhance the degree of composting humus,adding 20% corn stover to lawn mown waste was better.