石粉對泥炭pH值的調(diào)節(jié)及其對幾種盆花生長發(fā)育的影響.pdf

1、華中農(nóng)業(yè)大學碩士學位論文石粉對泥炭pH值的調(diào)節(jié)及其對幾種盆花生長發(fā)育的影響姓名：丁萌申請學位級別：碩士專業(yè)：農(nóng)業(yè)推廣園藝指導教師：王彩云20081201ABSTRACTInthepaperweobservedthechangeofmedium—pHandtherelationshipbetweenpHanddolomitepowdercontentThenewmethodofadjustingmedium—pHwasexploredby

2、inputtingdolomitepowderofdifferentcontentsinthemediumbasedonpeatBasedonit，theacid—basepropertyofculturemediumwasresearchedandadjustedoffourcommonflowers：Dahliahybrida，Tageteserecta，Celosiacristata，BegoniahiemalisTheaimWa

3、stooffertheoreticalargumentforregulatingthegrowthofflowersandbloomingdateTheseresultsindicatedthat：1ThechangerulewasbasicallythesamedespiteofdifferenttheinputingdolomitepowderbuttheelevatoryamplitudeofpHwasdifferentThemo

4、redolomitepowderwasinput，themoretheelevatoryamplitudeofpHwas，thefastertheelevatoryspeedofpHwasThemostrapidincreaseinpHoccurredinthefirstfivedaysofincubation，especiallyinthefirsttwodaysIngeneral，pHreachednearequilibriumva

5、lueswithinfifteendays，althoughpHcontinuedtoincreaseslightlythereafter2Comparedwiththecontrolofno—inputingdolomitepowder(treatmentA，pHvalueoftheinitial503)thetreatmentofinputingdolomitepowderincreasedtheovergroundplantbio

6、massofflowerInplantingDahliahybrida，wecouldadequatlyregulatepHtosubacidityenviroment(pHvalueof638)，whichcouldassureplantgoodgrowthMediumpHhadlessinfluenceonthegrowthofTageteserecta，andTageteserectacouldgrowwellinalkalsce

7、ncetoneutralityenvironment(pHvalueof695)AftertreatmentofdolomitepowderCelosiacristataundergonethegreatchange，whichshowedthatCelosiacristatawassensitivetomedium—pHBegoniahiemaliscouldgrowwellinsli曲flyacidenvironmentcondit

8、ions，andthetreatmentA(pHvalueof543)，WasthebestonefortheirvegetativegrowthamongalltreatmenrsSlighflyacidmediumcouldimprovethequalityoftheflowersobviouslyseenfromthetwotargetsofflowernumbersandflowerdiameter3Becauseofthedi