文档介绍：摘要:本试验以发草种子为实验材料,研究了用不同浓度的赤霉素(GA3)、生长素(IAA)以及烯效唑(S-3307)浸种对发草种子萌发和幼苗素质的影响。结果表明:赤霉素和生长素浸种处理对发草种子的萌发和幼苗素质均有明显的促进作用。此外综合分析不同处理对发草幼苗相关的形态指标和生理指标的影响之后,发现50mg/L的赤霉素(GA3)处理对发草种子萌发和幼苗素质的促进最为明显。关键词:生长调节剂,发草,种子萌发,幼苗素质InfluenceoftheThreeKindsofPlantGrowthRegulatoronSeedGerminationandTheQualityofSeedlingofDeschampsiaSeedScienceandEngineering2006-2:LiuMingmingDirectedbyShiHaichunAbstract:Inthisstudy,UsingDeschampsiaseedsastheexperimentalmaterial,theeffectsofdifferentconcentrationsofgibberellin(GA3),auxin(IAA)anduniconazole(S-3307):GibberellinandauxinseedsoakingtreatmentweresignificantlyrolesinpromotingtheseedgerminationandthequalityofseedlingsofDeschampsiaseedsBesides,prehensiveanalysisoftheinfluenceofdifferenttreatmentsonthePhysiologicalandmorphologicalindicatorsrelatedtoDeschampsiaseedling.,wefoundthatthe50mg/Lofthegibberellin(GA3)treatmenthasthemostimpactinpromotingtheseedgerminationandthequalityofseedlingsofDeschampsiaseedsKeywords:Growthregulator,Deschampsia,Seedgermination,Qualityofseedlings发草Deschampsiacaespitosa(Linn.)。孙明德等[1]研究发现发草品质优良,适口性好,营养物质含量高,发草茎叶柔软,表面无刚毛,叶片不易脱落,叶量丰富,叶重占鲜草重量高,各类牲畜均喜食,并能调制成优质的青干草,是一种值得大力推广的优良牧草。发草含有丰富的粗蛋白质和矿物质,粗纤维含量低。与优良牧草冷地早熟禾相比,,。同时发草是耐寒、耐旱的地被草坪植物,由于适生范围较广,且耐修剪,十分适合于城市园林绿化。[2]研究发草对砷的耐受性,通过发草对