安徽农业大学学报2026，Vol.53Issue(1)：96-106,11.DOI:10.13610/j.cnki.1672-352x.20260317.002
木质素与紫云英共腐解过程中CO2释放及溶解性有机物演化特征
Characteristics of CO2 release and dissolved organic matter evolution during co-composting of lignin and Chinese milk vetch
摘要
Abstract
[Objective]This study aimed to investigate the response characteristics of carbon conversion to the addition of different lignin types during the decomposition of readily degradable organic materials,in order to evaluate the potential role of lignin in regulating organic carbon mineralization and promoting humus formation.[Method]Chinese milk vetch was chosen as a readily degradable organic material for the indoor simulated incu-bation experiment,which included four treatments:no lignin(CK),alkali lignin(AL),dealkali lignin(DAL),and enzymatic hydrolysis lignin(EHL).The alkali absorption method,combined with conventional measurements,and spectroscopic analysis was used to analyze CO2 release and the evolution of dissolved organic matter(DOM)during the decomposition of Chinese milk vetch.[Result]The addition of all three types of lignin reduced CO2 during the decomposition of Chinese milk vetch.After 30 days of decomposition,the cumulative CO2 release in the EHL and DAL treatments was significantly lower than that in the CK(P＜0.05),decreasing by 10.0％and 5.0％,respectively.The results of UV-Vis and three-dimensional fluorescence spectroscopy analyses indicated that the addition of alkali lignin was beneficial in increasing the aromaticity,humification degree,molecular weight,and accumulation of humus-like substances in Chinese milk vetch decomposition derived dissolved organic matter(DOM).The proportion of humus-like substances in each treatment was AL(64.5％)＞CK(63.9％)＞DAL(61.9％)＞EHL(61.5％),while the proportion of protein-like substances was EHL(38.5％)＞DAL(38.1％)＞CK(36.1％)＞AL(35.5％).Additionally,the seed germination index of AL,DAL,and EHL treatments was significantly high-er than that of CK(P＜0.05),with the increase of 20.0％,45.0％,and 16.2％,respectively.The DAL treatment was significantly higher than both the AL and EHL treatments.[Conclusion]The addition of lignin to a certain extent can reduce CO2 release during the decomposition of Chinese milk vetch and increase the seed germination index of the decomposed products.Among them,the EHL treatment performs best in reducing CO2 emissions,the DAL treatment performs best in improving the seed germination index,and the AL treatment has advantages in promoting DOM humification.These results provide a scientific theoretical basis for the application of lignin in the process of returning green manure into soil.关键词
木质素/紫云英/共堆肥/溶解性有机物/CO2释放Key words
lignin/Chinese milk vetch/co-composting/dissolved organic matter/CO2 release分类
农业科技引用本文复制引用
马英昕,寇泽,石涛,崔粲,齐永波..木质素与紫云英共腐解过程中CO2释放及溶解性有机物演化特征[J].安徽农业大学学报,2026,53(1):96-106,11.基金项目
安徽省自然科学基金项目(1908085QD153) （1908085QD153）
安徽农业大学"优才计划"学生发展支持项目(2024017) （2024017）
安徽农业大学大学生创新创业训练计划项目(X202410364724,X202310364586) （X202410364724,X202310364586）
