刻芽对幼龄阿森泰克苹果树萌芽和成枝的影响

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中图分类号：S661.1 文献标识码：A

The Effect of Bud Notching on Budding and Branching in Asentek Apple Sapling

QIAN Dandan，NIU Linglei* ， JI Guangpeng，CHANG Xueyan，CUI Yuxue （Agricultural Science Research Institute of the Third Division， Xinjiang Production and Construction Corps， Tumushuke Xinjiang 84390o，China）

Abstract：【Objective】To investigate the optimal notching timing and spacing for the main trunk of Asentek apple saplingsunder thedwarf rootstock high-densitycultivation model inthe southern Xinjiang region.【Methods】Theexperiment used Asentek applesaplings froma dwarf rotstock high-densityorchard as thetest material.Diferent notchingtreatments wereappliedat varying times and spacings to study their efects onbud burstand branchingof the main trunk.Byobserving thebud burstsituation after notching on the maintrunk oftheaple saplingsandregularly measuring growth indicators such as sht growth，thepaternsofshotformationabilityandshoot characteristics wereanalyzed.【Results】Notching significantly increasedthebud burstrateinthebaresectionsofthe main trunk ofapplesaplings.After notching，thebudburstrateranged from 50% to 80% ，with the highest rate reaching 80% （T4 treatment）. Notching also improved the branching rate，but the efectsvaried depending onthe timing and spacing of thenotching.Among the treatments，T3 showed the highestbranching rate （90% ），followedbyT4 88.89%） . The three notching treatments conducted on March 15 all demonstrated high shoot formation ability and long shoot rate，with shoot formation rates of 56.42% ， 45.56% ，and 42.12% ，respectively. However， there were no significant diferences in shoot formationabilityamong the three treatments.【Conclusion】Compared to the control，notchingatdiferent times and spacings promotedbudburstonthemaintrunk tovaryingdegres.Notching on March 15，before budbreak，significantlyenhancedbudburstinAsentekapplesaplings，increased thenumberofshoots，stimulated branching， improved shoot formation ability， and facilitated early canopy expansion and shaping.

Key words：apple sapling；trunk bud notching；budding rate；branching rate；branching ability苹果（Maluspumila Mill.）属蔷薇科苹果 属，是世界上广泛栽培的重要水果之一，具有重要的经济地位。（剩余4579字）