土壤学报2025，Vol.62Issue(3)：716-728,13.DOI:10.11766/trxb202402240077
餐厨垃圾堆肥对水稻土团聚体稳定性的影响及机制
Effect and Mechanism of Food Waste Compost on the Stability of Paddy Soil Aggregates
摘要
Abstract
[Objective]Food waste composting is one of the potential directions of food waste resource utilization.Food waste compost is rich in organic matter and salt,and its impact on soil aggregates is still unclear.Exploring the influence of food waste compost application on the stability of paddy soil aggregates and its mechanism can provide references for agricultural utilization of food waste compost.[Method]Six treatments were set up in this study:No fertilizer(CK),Chemical fertilizer(F),Food waste fresh compost(FC),Food waste aged compost(AC),Chicken manure organic fertilizer(CM),Pig manure organic fertilizer(PM),The effects of these treatments and the influence of food waste compost on the stability of soil aggregates and soil surface electrochemical parameters were investigated.Correlation analysis and redundancy analysis(RDA)were used to investigate the main factors affecting the stability of aggregates.[Result]The results showed that:(1)Food waste compost enhanced the water stability of paddy soil aggregates,and reduced the slaking and differential swelling effects.Also,the MWDYoder,MWDLB-fast,and MWDLB-slow of AC were 21.4%,107.8%,and 49.3%higher than CK,respectively.(2)The electrochemical properties of the soil surface were the main factors affecting the stability of aggregates and the surface charge density of the four organic fertilizers increased by 29.0%-45.2%.(3)Organic matter has a significant correlation with surface charge density,specific surface area,and surface charge number,and the correlation coefficients are 0.67,0.53,and-0.63,respectively.Furthermore,exchangeable calcium showed a significant positive correlation with organic matter and the correlation coefficient was 0.90.[Conclusion]Food waste compost can enhance the surface charge density of soil by increasing soil organic matter,thus increasing the cementation between exchangeable calcium and soil particles and enhancing the stability of soil aggregates.关键词
餐厨垃圾堆肥/团聚体稳定性/土壤表面电化学性质/水稻土Key words
Food waste compost/Aggregate stability/Electrochemical properties of soil surface/Paddy soil分类
农业科技引用本文复制引用
敖晖,陈冲,周虎..餐厨垃圾堆肥对水稻土团聚体稳定性的影响及机制[J].土壤学报,2025,62(3):716-728,13.基金项目
中央高校基本科研业务费专项资金项目(2023RC047)资助 Supported by the Special Fund for Basic Scientific Research for Central Universities(No.2023RC047) （2023RC047）
