简介：EnhancementeffectsofrareearthelementsonthegrowthofChaetocerosmulleriisstudiedinthispaper.Theresultsshowthatallofthelight,middleandheavyrareearthelementshavesimilarenhancementeffectonthegrowthofChaetocerosmulleri,withthebeneficialconcentrationsofLa,GdandYbbeing7.28～87.40μmol/L,6.36～57.23μmol/Land5.78～17.34μmol/L.TheoptimumconcentrationsofLa,GdandYbare7.28～50.98μmol/L,31.80～44.52μmol/Land5.78～17.341μmol/L,respectively.WhentheconcentrationsofLa,GdandYbare7.28～87.40μmol/L,6.36～57.23μmol/Land5.78～17,34μmol/L,theconcentrationsofchlorophyllhaveincreasedby9.3～47.0%,33.4～44.3%,and36.5～40.3%,respectivelyascomparedwiththecontrolgroup.ThemechanismofenhancementofrareearthelementsonthegrowthotChaetocerosmulleriisalsodiscussedinthispaper.