中国水土保持科学2026，Vol.24Issue(4)：172-184,13.DOI:10.16843/j.sswc.2025366
有机物料复混对风沙土团聚体及有机碳组分的复合效应
Combined effects of mixed organic material in scientific formula on soil aggregates and organic carbon fractions in aeolian sandy soil
摘要
Abstract
[Objective]The aeolian sandy soil in western Jilin province is characterized by poor structure,organic carbon deficiency,susceptibility to wind and water erosion,and low crop yield,which severely restrict sustainable agricultural development.This study explores effective approaches to improve aeolian sandy soil fertility,enhance soil erosion resistance,and increase crop yield through co-application of organic materials.[Methods]Using Sorghum bicolor as the test crop,seven treatments were established:no organic application(CK),straw return(G),straw+manure(GF),manure(F),straw+microbial agent(GS),microbial agent(S),and manure+microbial agent(FS).Soil aggregate stability,active organic carbon fractions,and crop yield in the aeolian sandy soil were measured under different combined organic material treatments,followed by principal component and correlation analysis.[Results]1)GF treatment increased the content of water-stable macroaggregates≥0.25 mm(R0.25)and the mean weight diameter(MWD)by 12.11%and 55.6%,respectively.2)Soil organic carbon(SOC)and its active fractions significantly increased.GF treatment exhibited the greatest increases in SOC,particulate organic carbon(POC),and easily oxidizable organic carbon(EOC),while GS treatment significantly increased dissolved organic carbon(DOC).MWD,geometric mean diameter(GMD),and R0.25 showed high consistency in loading vectors with SOC and POC,all closely distributed along the positive direction of PC1.3)POC was highly correlated with aggregate stability indices MWD,GMD,and R0.25,with correlation coefficients of 0.90,0.96,and 0.93(P<0.05),respectively.4)In terms of crop yield,GF treatment significantly increased S.bicolor yield by 104.0%compared to CK.[Conclusions]The co-application of straw and sheep manure(GF)effectively promotes macroaggregate formation,enhances organic carbon sequestration,and improves soil resistance to wind and water erosion through a synergistic mechanism where"slow-release carbon from straw builds the framework,and fast-release carbon from manure provides cementation."This approach achieves high crop yield and represents an optimized management model for the region,integrating soil improvement,carbon sequestration,and yield increase benefits.关键词
有机物料复合效应/风沙土/团聚体稳定性/活性有机碳/土壤固碳Key words
combined effects of organic materials/aeolian sandy soil/aggregate stability/active organic carbon/soil carbon sequestration分类
农业科技引用本文复制引用
赵光旭,吴景贵,何丽,徐敬东..有机物料复混对风沙土团聚体及有机碳组分的复合效应[J].中国水土保持科学,2026,24(4):172-184,13.基金项目
国家重点研发计划项目"典型小流域黑土侵蚀退化阻控技术智慧化配置与应用示范"(2024YFD1501105) National Key R&D Plan Project"Smart Allocation and Demonstration of Erosion Control Technologies for Black Soil Degradation in Typical Small Watersheds"(2024YFD1501105) （2024YFD1501105）
