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1、中國水稻科學(xué)(ChinJRiceSci),2015,29(2):141-149http://www.ricesci.cnDOI:10.3969/ji.ssn.1001G7216.2015.02.005141施氮量和遮蔭對(duì)不同基因型水稻產(chǎn)量及一些生理特性的影響潘圣剛1,2,#聞祥成1,#莫釗文1,2段美洋1,2董浩然1黃貴興1田華1唐湘如1,2,?(1華南農(nóng)業(yè)大學(xué)農(nóng)學(xué)院,廣州510642;2農(nóng)業(yè)部華南地區(qū)作物栽培科學(xué)觀測實(shí)驗(yàn)站,廣州510642;#共同第一作者;?通訊聯(lián)系人,EGmail:tangxr@scau.edu.cn)EffectsofNitrog
2、enApplicationandShadingonYieldsandSomePhysiologicalCharacteristicsinDifferentRiceGenotypesPANShengGgang1,2,#,WENXiangGcheng1,#,MOZhaoGwen1,2,DUANMeiGyang1,2,DONGHaoGran1,HUANGGuiGxing1,TIANHua1,2,TANGXiangGru1,2,?(1CollegeofAgriculture,SouthChinaAgriculturalUniversity,Guangzhou51
3、0642,China;2ScientificObservingandExperimentalStationofCropcultivationinSouthChina,MinistryofAgriculture,China;#Theseauthorscontributedequallytothiswork;?Correspondingauthor,EGmail:mail:tangxr@scaue.duc.n)PANShenggang,WENXiangcheng,MOZhaowen,etal.Effectsofnitrogenapplicationandsh
4、adingonyieldsandsomephysiologicalcharacteristicsindifferentricegenotypes.ChinJRiceSci,2015,29(2):141G149.Abstract:Effectsofshadingatthebeginningofheadingstageongrainyieldsandsomephysiologicalcharacteristicsunderdifferentnitrogenapplicationratesindifferentricegenotypeswereinvestig
5、atedbyusingPeizataifeng,2,whichwasYuejingsimiaoandTianyou998astestmaterials.Nitrogenapplicationratewas0,120and180kg/hmexpressedasNN,MNandHNinorder,respectively.TheshadingtreatmentwasdoubleGdeckshade,singleGdeckshadeandnoshade,whichwasexpressedasDS,SSandCK,respectively.Comparedwit
6、hNN,leafareaindex(LAI),stemdryweight,totaldrymaterialweight,dryweightoutputandexportpercentageofdrymatterinstemandsheathunderHNwerehigherinfivedaysrecoveryundershadetreatmentinrice.Andphotosynthesisrate(Pr)andstomatalconductance(Gs)inthefirstleaffromthetopunderHNwashigherthanthat
7、underNN,respectively.Furthermore,grainyieldandeffectivepaniclenumberperhillandtotalnumberofspikeletsperpanicleweresignificantlyhigherunderHN,whereasseedsettingrateand1000GgrainGweightwasremarkablyfewerthanthatunderNN.Comparedwithnoshadetreatment,stemdryweight,totaldrymaterialweig
8、ht,LAI,PrandGsdeclinedevidentlyunderDS.A