扬州大学学报（农业与生命科学版）2025，Vol.46Issue(1)：90-99,10.DOI:10.16872/j.cnki.1671-4652.2025.01.011
不同有机肥配施化肥对复垦土壤有机碳矿化特征的影响
Effects of different organic fertilizer combined with chemical fertilizer on the characteristics of organic carbon mineralization in reclaimed soil
摘要
Abstract
Soil organic carbon(SOC)mineralization directly affects soil quality and crop growth.This study was to re-veal the characteristics of SOC mineralization in reclaimed soils under different types of organic fertilizers combined with chemical fertilizers,from the perspective of soil aggregates.The SOC mineralization rates of the topsoil and aggregates of different particle sizes initially decreased,then increased and decreased again,and finally gradually slowed down.The or-der of SOC mineralization rate,cumulative mineralization(Ct),and potential mineralizable(C0)was as follows:medium aggregates(2～0.25 mm)＞large aggregates(＞2 mm)＞micro-aggregates(＜0.25 mm).Compared to the application of chemical fertilizers alone,different types of organic fertilizers combined with chemical fertilizers can increase the SOC mineralization rate,Ct and C0 of topsoil and aggregates of various particle sizes.The application of vermicompost and rapeseed cake fertilizer resulted in higher SOC mineralization rate,Ct and C0 than the application of chicken manure.The Ct and C0 of topsoil were significantly positively correlated with SOC and total nitrogen(TN)contents of large and medi-um aggregates,and significantly negatively correlated with micro aggregates SOC and C/N of different particle sizes ag-gregates,and were mainly affected by SOC,TN and C/N in medium aggregates.In summary,medium aggregates play a dominant role in the mineralization of SOC in topsoil.The combination of organic and chemical fertilizers promotes SOC minerali-zation in rural homestead reclamation soils,making it an effective measure to enhance the fertility of reclaimed soils.关键词
宅基地复垦土/有机肥/土壤团聚体/有机碳矿化Key words
rural homestead reclamation soil/organic fertilization/soil aggregates/organic carbon mineralization分类
农业科技引用本文复制引用
王延旭,何逸欢,张欢,卫佳锋,郁乐宾,赵海涛,毛伟,杨洪建,居静..不同有机肥配施化肥对复垦土壤有机碳矿化特征的影响[J].扬州大学学报（农业与生命科学版）,2025,46(1):90-99,10.基金项目
江苏现代农业产业技术体系建设专项[JATS(2023)321] （2023）
扬州大学大学生创新创业训练计划项目(X20220566、XCX20230635) （X20220566、XCX20230635）
江苏省作物遗传生理重点实验室开放课题(YCSL202105) （YCSL202105）
