关键词: 有机物, 堆肥化, 木质素, 腐殖质

Abstract: Aerobic composting, as one of the technologies for treating organic solid waste, can simultaneously realize the safe disposal, minimisation and recycling of wastes. The abundant contents and complex structure of lignin in composting materials is an important factor limiting the rapid humification rate. The stable humus formed during composting is a good soil remediation and amendment. Enhancing lignin degradation, while promoting rapid humus formation is the key to improve composting efficiency and compost quality. This paper reviewed the effects of microorganism, pretreatment methods and additives on lignin degradation; summarized the characteristics and forming process of humus, appling studies on humus and relationship between humus formation and lignin degradation. The paper also put forward the following aspects for research: ① ligninase catalyzing mechanism, gene structure and expression regulation mechanism of ligninase; ② pretreatment technology of lignocellulose with high efficiency and low consumption; ③ structural characteristics of compost humus and its mechanism of soil nutrition regulation, so as to provide references for achieving rapid organic matter humification and compost humus resource utilization.

Key words: organic matter, composting, lignin, humus