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Effects of Fertilizer Formula and Brassinolide on Growth of Camellia oleifera

施肥配比与芸苔素内酯对油茶生长的影响研究



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EfectsofFertilizerFormulaandBrassinolideonGrowthofCameliaoleifera
HUDongnan1,HUYuling1,NIUDekui1,TUShuping1,ZHANGWenyuan1,GUOXiaomin2
(1.SchoolofLandscapeandArt,JiangxiAgriculturalUniversity,Nanchang 330045,Jiangxi,China;
2.ForestEcologicalEngineeringResearchCenter,JiangxiAgriculturalUniversity,Nanchang 330045,Jiangxi,China)
Abstract:Inordertostudythebestdosageoffertilizerandbrassinolide(BR)forthegrowthofChangLin4,
ChangLin166andChangLin18cameliaclones,L9(3
4)orthogonalexperimentdesignwasadoptedtotestthefer
tilizerformulaandfoliarsprayingBRsforthethreeclones.Theresultsareasfolows:(1)Varietiesisthecritical
factorafectingthegrowthindexofcamelia.(2)Theweightsofvariousfactorsafectinggrounddiameter,crowndi
ameter,yieldandnetphotosynthesisareintheorderofvariety,interactionamongfactors,fertilizingandBRs.Fer
tilizinghasstrongerefectonleafSPADvaluethantheinteractionamongfactors,whilethelaterhasstrongerefect
onheightgrowththantheformer.Thefactorsafectingtheseedingratearevariety,fertilizing,BRsandinteraction
amongfactors.(3)WiththetreatmentcompositionofChangLin18,N2P2K2and0.067mg·L
-1BRs,theinde
xesoftreeheight,crowndiameterandseedingratearethehighest.WiththetreatmentcompositionofChangLin4,
N1P1K1and0.067mg·L
-1BRs,thegrounddiameter,leafSPADvalueandtheyieldarethehighest.Withthe
treatmentcompositionofChangLin4,N2P2K2and0.033mg·L
-1BRs,thedailyaveragenetphotosynthesisrate
isthehighest.
Keywords:cameliavariety;fertilizing;BR;interaction;photosynthesis
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