乳酸菌对沼液贮存过程气体排放的影响及应用

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中图分类号：S216.4 文献标志码：A 文章编号：1672-2043（2025）12-3262-08 doi：10.11654/jaes.2025-0028

The impact of lactic acid bacteria on gas emissions during the storage of slurry and applications

LIUYujie， ZHAO Huicheng，LI Meihual，ZHANGLinqi

（1.KeyLabratoryoficlturalWateresousCenterfoulturalesourcReseachstituteofeticsndeeotal Biology，Chsees;itds Abstract：Thissdyinvestigatedheefetsoflacticcidbcteria（LAB）ditioonN，CO，andNOemissionsduringsluoage andevaluatedteesourceuilatiopotetialoftetreateduryTeexperimeticuedtwogoups：LABtreatedslurygoupS sealedstorageafterLABadition）andafreshslurrycontrolgroup（FD，sealedstorageonly）.TheemisioncharacteristicsofNH，CC 12 ，and N2O werecomparedoveran-daystorageperiod.Afterstorage，bothsurieswereusedasfertilizers（denotedasFSPandFDP， respectively），andtheirefectsonmaizegrowthparameters（rotlength，plantheight，totalfreshweight，abovegroundfreshweight， undergroundfreshweight，abovegrounddryweight，udegrounddryweight，ndoot-toshtratio）wereanalyzd.Theresultssowed that the FS group achieved significant NH 13 reduction， with a cumulative emission of 2.5g⋅L-1 over 11 days， representing a 26.5% reduction compared to the FD group（3.4g⋅L-1） . The maximum daily NH 13 reduction rate reached 35%（P<0.05） . No significant differences were observed in CO 12 and N2O emissions betweenthe two groups，and NO emissions were negligible.By the endof storage，thepHof the FS group decreased by 0.81pH unit，while the total ammonia nitrogen content increased by 23.9% ，indicating that pH reduction was the primary cause of NH3 mitigation.Furthermore，maizegrowth intheFSPgroupwassignificantlybeter thanintheFDP group，with increases of 36.5% in root length， 25.7% in plant height， 59.0% in aboveground fresh weight， 22.4% in underground fresh weight， 68.4% in aboveground dry weight，and 45.6% in total fresh weight （ P<0.05 ）.In conclusion，LAB treatment of slurry significantly reduces NH3 emissionsduringstoragewithoutincreasinggrenhousegasemisionsandpromotescropgrowth.Thismethodofersadvantagessuchs high safety，low cost，and environmental friendliness，demonstrating strong potential for practicalapplication.

Keywords：animal slurry;ammonia;mitigation;lactic acid bacteria; maize

沼液作为沼气工程厌氧消化后的主要液相产物，富含氮、磷、钾等植物所需的营养元素，是一种具有较高利用价值的有机资源。（剩余14484字）