有机肥配施化肥对设施土壤-作物系统内稳性特征的影响

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中图分类号：S345；S625 文献标识码：A 文章编号：1671-8151（2025）05-0048-12

Abstract：Objective]Integratedorganic-iorgaicfertilizationproves moreefectivethanchemicalfertilizeraloneimprovingthe cropgrowth environment.This studyinvestigatedtheimpactofdiferentfertlizationregimesonecologicalstoichiometryand

systemstabilityingrenhousesoil-cropsystems，whichwascrucialforguidingsustainableagriculturalmanagement.[Methods] Agreenhouseexperimentwithtomato-cucumberrotationwasconducted from2O22to2023inFangshanDistrict，Beijing.Five fertilizationtreatmentswereestablished：TO（nofertilizer），T1（chemical fertilizer），T2（organic fertilizer），T3（ 50% chemical fertilizer+ 50% organic fertilizer），and T4（ 50% chemical fertilizer +50% organic fertilizer+amendments）.Weanalyzed 27 parameters，ncludingsoilphysicalpropertiesandrhizosphere microbialcommunitystructure，toassess thehomeostaticchar acteristicsofthe soil-cropsystembasedon ecological stoichiometry.Two trianglemodels（TRland TR2）wereemployed to calculate systemsustainability indicesand evaluate the impactsofdiferentfertilizationpracticesonsystem homeostasis.[Results]Ccumberplantsexhibited stronghomeostasis with minimal influencefrom fertilization treatments.Incontrast，soilmi crobial biomasscarbon，trogen，andphosphorus weresensitivetofertlization，showinganon-homeostaticstatewithH（Ho meostasis Index） <1.3 .System under T3 and T4 treatments achieved a sustainable production level（ H⩾1.3 ），whereas TO and T1 resulted in an unsustainable state （ H<1.3 ）.Model analysis confirmed that organic-inorganic fertilization significantly enhanced system sustainabilty.TheamendmentinT4further improved stabiltybyregulatingcarbon-nitrogen-phosphorus（CN-P）cycling. The sustainability indices exhibited a significant positive correlations（ P<0.01 ）with soil organic carbon，total nitrogen，and microbial indices.[Conclusion]Themicrobialindices exhibitedhigherexplanatorypower intheTR2modelprov ingtobeamorepreciseindicatorofsoilecosystem functionalchanges.Ourfindings provided important insightsforadvancing sustainability in facility agriculture.

Keywords：Facility soil，Rotation，Home characteristics，Stoichiometry，Sustainability index

长期的研究表明，合理的施肥方式不仅能够改善土壤物理、化学性质，还能促进微生物多样性的提升，从而实现农业生产的可持续发展[1。（剩余17870字）