植物根际促生菌对桂花生长、生理适应性 及土壤性状的影响

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中图分类号：S685.13;S718 文献标志码：A 文章编号：1000-2006（2026）02-0196-09

Abstract：【Objective】Thisstudyinvestigated theefectsof inoculating Osmanthus fragranswith twoplant growthpromoting rhizobacteria （PGPR），YokenellaregensburgeiandPseudomonas moselii，toprovide areference forfuture PGPR application in o .fragrans cultivation.【Method】PGPR strains isolated from o .fragrans rhizosphere soil were selected for a pot experiment.One-year-old o .fragransseedlingswere inoculated with Y.regensburgei，P.mosselii，or left untreated（control group）to assess the impactsofPGPRon plant growth，physiological adaptation，and rhizosphere soil properties.【Result】Both PGPR strains promoted plant height and increased root fresh weight，stem fresh weight， rootlength，and stem length.Y.regensburgeidemonstratedamoresignificant efect onthegrowth characteristicsof O.fragrans.Both PGPR treatment could significantly enhance the CAT of o .fragrans.PGPR application increased soil organic matter content but did not significantly alter soil pH ，electrical conductivity，available phosphorus，or available potassium content.【Conclusion】The PGPR strains Y regensburgei and P .mosselii improved the rhizosphere soil environment and enhanced the growth and physiological processes of o .fragrans，withY.regensburgei exhibitingsuperior overalleficacy.These screened strains offer potential for developing specialized microbial fertilizers for o . fragrans， thereby advancing novel fertilizer research and promoting the growth of this plant species.

Keywords：Osmanthus fragrans;plant growth-promoting rhizobacteria;growthpromotingability;growthandphysiological

adaptability;soil properties

桂花（Osmanthusfragrans）是木犀科（Oleaceae）木犀属（Osmanthus）的常绿小乔木或灌木，广泛分布于亚热带地区。（剩余20947字）