西南农业学报2025，Vol.38Issue(8)：1576-1585,10.DOI:10.16213/j.cnki.scjas.2025.8.002
长期生物降解地膜覆盖对大蒜-玉米轮作田土壤环境的影响
Effect of long-term biodegradable mulch coverage on soil environment in garlic-maize rotation fields
摘要
Abstract
[Objective]The present paper aimed to further understand the long-term effects of biodegradable mulch film coverage on soil health,assess the impacts of long-term application of biodegradable mulch film and polyethylene mulch film on soil aggregation,nutrient con-tent,enzyme activity,microbial activity,and microbial biomass carbon content.Additionally,the relationships among these soil indicators were explored to reveal the long-term soil effects of biodegradable mulch film.[Method]The experiment was conducted over four years,from September 2018 to September 2022.A randomized block design was used,with two treatments:BM(biodegradable mulch film)and PM(polyethylene mulch film).Soil water-stable aggregates,nutrient content,enzyme activity and microbial properties were measured.[Result]Compared to PM,the BM treatment significantly increased the mass percentage of water-stable aggregates with diameters of 1-0.25 mm,2-1 mm,and＞2 mm in the 0-20 cm soil layer.Furthermore,over a four-year period,the soil organic carbon content,alkali-hydrolyzable nitrogen,available phosphorus,available potassium,urease activity,sucrase activity,catalase activity,microbial activity and microbial bio-mass carbon content in the 0-20 cm soil layer increased by 1.80％,20.14％,6.92％,35.77％,10.98％,31.85％,13.58％,32.31％and 4.26％,respectively.Large aggregates indirectly exerted a significant positive effect on microbial biomass carbon and sucrase activity through soil organic carbon content,while microbial biomass carbon content had a highly significant positive effect on large aggre-gates.[Conclusion]Compared to the PM treatment,the BM treatment enhances soil aggregate stability,nutrient content and enzyme activity.Soil organic carbon,as a key hub,drives the'aggregate-enzyme-microbe'triadic interaction network,establishing a self-organizing regula-tory mechanism for soil carbon pool stability and ecosystem function maintenance.关键词
团聚体/酶活性/微生物/覆膜/养分Key words
Aggregates/Enzyme activity/Microorganisms/Mulching/Nutrients分类
农业科技引用本文复制引用
吕亚辉,米庆华,张明明,许丹丹,董军伟,王长远,宋宜萱,纪博翔,王禹凡,宗睿,李全起..长期生物降解地膜覆盖对大蒜-玉米轮作田土壤环境的影响[J].西南农业学报,2025,38(8):1576-1585,10.基金项目
农业农村部生态环境保护项目(2110402) （2110402）
国家自然科学基金项目(32001473、52109059) （32001473、52109059）
国家重点研发计划项目(2023YFD1902605) （2023YFD1902605）
山东省青年创新团队项目(2023KJ162) （2023KJ162）
