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ID:32136984
大小:5.90 MB
页数:47页
时间:2019-01-31
《硅影响大葱产量品质形成的生理机制分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据山东农业大学硕士学位论文AbstractAsanacceptedandbeneficialelement,siliconplaysanimportantroleinimprovingcropyieldandquality,buttheresponseofChinesespringoniontosiliconhadnotbeenreported.Therefore,UndertheconditionofNa2Si03‘9H20asutilizedsiliconsource,twovarietiesofChinese
2、springonion,‘Tianguang’and‘Zhangqiu’,weretakenasmaterialstoinvestigatetheeffectsofdifferentsiliconlevelsofnutrientsolution(0,0.6,1.2,1.8mmol/L)andsoilsiliconfertilizers(0,10,20,30kg/667m2Si02)respectively,onplantgrowth,yieldandquality,andotherphysiologicalcharact
3、eristicsbycombiningpotHoaglandnutrientsolutioncultureandfieldcultivation.inthisexperiment.Thechiefresultsareshowedasfollows:1.Theresultsshowedthatplantheight,cauloidlength,cauloiddiameter,dryweightofthetwovarietiesfirstlyincreasedandthendecreasedintherangeof1.8mm
4、ol/Lsilicon.Amongalltreatments,1.2mmol/LsiliconWasthebest,andthesingleplantyieldsofthetwovarietieswereimprovedby19.41%and30.85%respectivelycomparedwiththecontrolandinthetreatmentof1.8mmol/L,thetwovarietieswereimprovedby12.31%and22.79%.Inthefieldexperiment,atthetr
5、eatmentofsupplying20kg/667m2silicon(Si02),theyieldsof‘Tianguang’and‘Zhangqiu’werethehighestandincreasedby15.43%and25.69%comparedwiththecontr01.Moreover,appropriatesiliconalsosignificantlyincreasedthecontentsoffreeaminoacids,solublesugar,pyruvicacidofChinesespring
6、onion,whichindicatedthatChinesespringonionqualitycouldbeenhancedbyapplyingsilicon.2.ApplyingsiliconCanincreasechlorophyllandcarotenoidconrentofChinesespringonionandenhancelightutilizationefficiencyofplant.Amongalltreatments,1.2mmol/LsiliconWasthebest,thephotosynt
7、heticrateof‘Zhangqiu’varietyWashigherthanthatof‘Tianguang’.Moreover,appropriatesiliconalsosignificantlydecreasedthetranspirationrateofthetwovarietiesand1.8mmol/LsiliconWasthelowest,weredecreasedby23.45%and25.86%.Underhightemperatureofsummer,thetwovarietieshadshow
8、ednoonbreak,bututilizedsiliconimprovedFv/Fm、(ppsIIofChinesespringonionleavesanddecreaseNPQSOthatreducednoonbreakphenomenonandpromotetheproductionandaccumulatio
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