河南农业大学学报2026，Vol.60Issue(1)：110-121,12.DOI:10.16445/j.cnki.1000-2340.20250818.001
秸秆还田配施复合微生物菌剂对退化褐土修复及关键微生物筛选
Remediation effects and keystone microbial taxa screening in degraded cinnamon soil using straw returning combined with microbial agents
摘要
Abstract
[Objective]To investigate the effects of straw returning combined with microbial agent on soil nutrients and microbial community diversity in degraded cinnamon soil,and to provide effective and feasible restoration measures for soils degraded.[Method]Using untreated degraded cinnamon soil as the control(CK),straw alone(T1)and a combination of straw and microbial agent(Bacillus stutilis and Metarhizium)(T2)were applied.Soil nutrient indicators were measured,and metage-nomic sequencing was used to analyze differences in soil microbial communities across treatments.Key microbial taxa associated with soil organic carbon(SOC)were identified.[Result]The addition of straw and microbial agent improved soil pH and increased the content of SOC,available potassium(AK),available phosphorus(AP),alkali-hydrolyzable nitrogen(AN),and microbial biomass carbon(MBC).Metagenomic sequencing results indicated that the combined application of straw and micro-bial agent enhanced the α diversity of soil microorganisms at the species level.The relative abundance of Pseudomonadota,Actinomycetota,and Bacteroidota in the soil significantly increased.Correlation analysis revealed that SOC and microbial biomass carbon were closely related to microbial community structure.Among the microbial taxa with significant differences,Nonomuraea(Actinobacteria)was significantly correlated with changes in organic carbon and may play a key role in the restoration of degraded cinnamon soil.[Conclusion]In the process of restoring degraded cinnamon soil,the com-bined application of straw and microbial agent can significantly improve soil nutrient levels,alter the composition of soil microbial species,and enhance α diversity at the species level,and screen Nono-muraea as the keystone microbial taxa.关键词
退化褐土/秸秆还田/复合微生物菌剂/土壤养分/关键微生物Key words
degraded cinnamon soil/straw returning/microbial agent/soil nutrient/keystone micro-bial taxa分类
农业科技引用本文复制引用
崔家馨,韩钰,冯晨,武清涵,郭萍,杨世琦..秸秆还田配施复合微生物菌剂对退化褐土修复及关键微生物筛选[J].河南农业大学学报,2026,60(1):110-121,12.基金项目
国家重点研发计划项目(2022YFD1500600) （2022YFD1500600）
