MENGYun,MAShao-feng,SHAOJian-zhu,et al.EffectsofPaintingKT-30EmulsiononBudsinDifferentTimeon BranchingandGrowthofYoungAppleTrees[J].Northern Horticulture,2012,36(12):9-12.
不同时期涂抹KT-30乳液对苹果幼树发枝的影响
- Title:
- EffectsofPaintingKT-30EmulsiononBudsinDifferentTimeon BranchingandGrowthofYoungAppleTrees
- 文章编号:
- 1001-0009(2012)12-0009-04
- Keywords:
- apple; KT-30; germinationrateofbud; branchingability; lateralbranch; training
- 分类号:
- S661.1
- 文献标志码:
- A
- 摘要:
- 以2a生矮化中间砧“红富士”苹果幼树为试材，从萌芽前到7月份，对中心干延长枝剪口以下30～60cm缺枝部位涂抹100mg/kgKT-30乳液，研究不同时期涂抹KT-30乳液对促进苹果幼树芽体萌发及定位发枝的影响。结果表明：4月上旬、4月下旬、5、6与7月中心干延长枝剪口以下30～60cm部位对照萌芽率分别平均为43.7%、6.07%、0%、0%与10.75%。涂抹KT-30乳液后，第7～10天芽体萌发，从萌芽前4月5日到生长季7月5日，各处理芽的平均萌芽率均大于80%，其中5月25日处理后萌芽率最高，为100%，与其它处理时期的差异极显著。4与7月处理的芽体成枝力低，多抽生为短枝，其中7月25日处理后成枝力最低，为0%，极显著小于其它处理时期的，并且抽生枝条成熟度较差。5月25日与6月10日处理的芽体成枝力高，分别为66.０%与57.6%，超长枝长度平均为66.7与91.1cm，枝条生长健壮，成熟度好。随处理时期的延后，枝干比呈现减小趋势，4、5、6与7月分别平均为0.43、0.40、0.38与0.28。
- Abstract:
- Basedonpainting100mg/kgKT-30emulsionondifferentbudsfrom30cmto60cmdownthetopofcentralshootdecapitatedinlastwinterfromApriltoJuly，effectsofpaintingKT-30emulsiononbudsindifferenttimeonbranchingandgrowthofyoungappletreeswerestudiedwithtwo-year-old‘RedFuji’appletreesondwarfinginter-rootstocks.Theresultsshowedthatnaturalgerminationrateofbudsofthecontrolfrom30cmto60cmdownthetopofcentralshootdecapitatedinlastwinterinearlierApril，laterApril，May，JuneandJulywas43.7%，6.07%，0%，0%and10.75%onaveragerespectively，andbudstreatedbyKT-30emulsiongerminatedontheseventhday，moreover，thegerminationrateofbudstreatedfromApril5thtoJuly5thwasallhigherthan80%，thegerminationrateofbudstreatedonMay25thwas100%whichwassignificantlyhigherthanthattreatedinothertime.Besides，budstreatedinAprilandJulywithlowbranchingabilityalmostgrewtospurs，thebranchingabilitywas0%whichwasthelowestwhenbudsweretreatedonJuly25th，andespeciallybecauseoflessgrowthtime，allthebudstreatedinJulygrewtospursormediumbrancheswithbadmaturity.However，budstreatedonMay25thandJuly10thhadstrongbranchingabilitywhichwas66.0%and57.6%onaverage，andtheaveragelengthofsuperlongbrancheswithstronggrowthvigorandgoodmaturitywas66.7cmand91.1cmrespectively.Theratioofbranchdiametertotrunkdiametershowedagraduallydecreasingtrendasthetreatmenttimedelayed，whichwas0.43，0.40，0.38and0.28onaverageinApril，May，JuneandJulyrespectively.
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备注/Memo
第一作者简介：孟云(1985-)，女，河北安国人，在读硕士，研究方向为果树栽培生理。E-mail：mengyun1111@126.com。
基金项目：现代农业产业技术体系专项资金资助项目(CARS-28)；河北省林业局资助项目(1117410)。
收稿日期：2012-04-09