湖南生态科学学报2026，Vol.13Issue(1)：1-9,9.DOI:10.3969/j.issn.2095-7300.2026.01.001
施肥管理模式对桂西北桑园土壤有机碳及其组分的影响
Effects of Fertilization Regimes on Soil Properties and Mulberry Leaf Yield in the Karst Regions of Southwest Guangxi
摘要
Abstract
[Objective]This study investigated the effects of fertilization management practices on the physicochemical properties,soil organic carbon,and its components in mulberry fields in northwest Guangxi,aiming to provide references for optimizing fertilization management in mulberry fields,promo-ting the sustainable development of the silkworm industry.[Method]Using mulberry fields receiving only chemical fertilizer with winter fallow as the control(CK),three fertilization management models were es-tablished:only chemical fertilizer+winter intercropping of green manure(CG),organic fertilizer repla-cing 30%of chemical fertilizer+winter intercropping of green manure(COG),and organic fertilizer a-lone+winter intercropping of green manure(OG).A three-year field plot experiment was conducted to analyze changes in soil physicochemical properties,soil organic carbon(SOC)and its components(solu-ble organic carbon DOC,microbial biomass carbon MBC,particulate organic carbon POC,and mineral-associated organic carbon MAOC)under different fertilization management systems.[Result]Compared with CK,CG treatment had no significant effect on soil bulk density,total nitrogen,total phosphorus,SOC,or its components,but significantly reduced pH by 0.3 units(P<0.05).COG and OG treatments reduced soil bulk density by 25.0%and 25.9%,respectively,while total nitrogen,SOC,MBC,POC,and MAOC increased by 10.6%and 24.3%,26.3%and 38.8%,110.4%and 245.9%,90.7%and 138.5%,and 23.9%and 35.1%,respectively(P<0.05).Changes in soil organic carbon and its com-ponents showed significant correlations with total nitrogen,available nitrogen,pH,and soil water content.[Conclusion]For mulberry fields that relied solely on chemical fertilizers,the soil health im-provement achieved through green manure cultivation alone is limited.Partial substitution of chemical fertilizers with organic fertilizers combined with winter green manure intercropping significantly improved soil structure and increased organic carbon and its stable fractions,representing and optimal fertilization strategy for enhancing.Soil fertility and carbon sequestration in mulberry orchands in northwestern Guangxi.关键词
桑园/绿肥/有机肥/土壤有机碳/碳组分Key words
mulberry field/green manure/organic fertilizer/soil organic carbon/carbon fraction分类
农业科技引用本文复制引用
黄韵琪,肖孔操,刘秋梅,潘复静..施肥管理模式对桂西北桑园土壤有机碳及其组分的影响[J].湖南生态科学学报,2026,13(1):1-9,9.基金项目
国家重点研发计划课题(2022YFF1300704),中国科学院乡村振兴项目(KFJ-XCZX-202303),中国科学院"西部之光"项目 （2022YFF1300704）
