1樹形的轉變
qiaohuapingguoyuanmuqianshengchanzhongzhuyaoyiziyoufangchuixinghegailiangfangchuixingzhengxingweizhu,zaiyoushuqijichujieguoqi,weiletigaoliuzhiliang,zengjiaguanghechanwujilei,liudezhizhoujiaoduo,meizhuliuzhizhouzai10個以上;在zai進jin入ru盛sheng果guo期qi之zhi後hou,容rong易yi出chu現xian鬱yu閉bi現xian象xiang,導dao致zhi樹shu冠guan內nei光guang照zhao惡e化hua,不bu利li於yu產chan量liang和he質zhi量liang的de提ti高gao。生sheng產chan中zhong改gai善shan通tong風feng透tou光guang條tiao件jian,優you化hua內nei膛tang成cheng花hua結jie果guo能neng力li,實shi行xing全quan方fang位wei結jie果guo便bian成cheng為wei生sheng產chan中zhong管guan理li的de主zhu要yao目mu標biao之zhi一yi。生sheng產chan中zhong通tong過guo落luo頭tou以yi增zeng加jia頂ding部bu光guang照zhao;通過疏除樹幹上大枝,拉開枝的層間,以增加側光的量;tongguojuchuguodidazhitigan,yizengjiafansheguangdeliyonglv,zheyangtongguozonghecuoshideshishi,jiushipingguoshengchanzhongyingyongdeshuxingfashenglebianhua,jiyoufangchuixingxiangkaixinxingzhuanbian。kaixinxingzongtizhiliangshao,guangnengliyongchongfen。zaishengguoqihou,liyongkaixinxingyouliyufengchan、穩產、優質,因而是盛果期果園應用的主要樹形。隨著樹齡的增加,要逐漸減少大枝的量,最終每株保持3~4個大枝軸即可。
2修剪手法由增加枝量變為控製枝量
幼樹期生產中的突出問題是枝量少,因而增加枝量便成為管理的主要任務,在修剪時提倡輕剪多留枝;而(er)在(zai)進(jin)入(ru)盛(sheng)果(guo)期(qi)之(zhi)後(hou)突(tu)出(chu)的(de)問(wen)題(ti)是(shi)田(tian)間(jian)鬱(yu)閉(bi),枝(zhi)量(liang)過(guo)大(da),導(dao)致(zhi)通(tong)風(feng)透(tou)光(guang)不(bu)良(liang),因(yin)而(er)減(jian)少(shao)枝(zhi)量(liang)便(bian)成(cheng)為(wei)管(guan)理(li)的(de)主(zhu)要(yao)任(ren)務(wu),要(yao)通(tong)過(guo)疏(shu)枝(zhi)手(shou)法(fa)的(de)應(ying)用(yong),將(jiang)667 m2枝量控製在8萬條左右,保證園內有良好的通透性。疏枝時應側重疏除過密枝、重疊枝、交叉枝、並生枝、輪生枝、多頭枝、對生枝、病蟲枝及粗度大於母枝1/3的枝。
3葉幕層由厚變薄
zaiyoushuqi,suizheshuguandexingcheng,yemucengzhujianjiahou,jinrushengguoqihou,youyuyemucengbianhou,guangzhaobujinqu,jiuhuidaozhishuguanguangzhaoehua,shuguanneitangjixiabuguangzhaocha,chenghuanengliruo,jiuhuibianchengwuxiaoshengchangqu,buliyuchanlianghexiaoyidetisheng。yinerzaijinrushengguoqihou,yaorenweidicushiyemucengbianbo,yiyouhuatongfengtouguangtiaojian。cujinyemucengbianbodefangfazhuyaoweishuchuzhongganshangdedazhi,tongguoshudazhi,dakaicengjian,bianyicengyemuweiduocengyemu,zengqiangtongfengtouguangxing。
4結果枝由老枝向新枝轉變
蘋果樹由幼樹期、初果期樹向盛果期過渡的過程,是結果枝逐漸形成、利(li)用(yong)和(he)老(lao)化(hua)的(de)過(guo)程(cheng)。在(zai)進(jin)入(ru)盛(sheng)果(guo)期(qi)後(hou),大(da)量(liang)的(de)結(jie)果(guo)枝(zhi)老(lao)化(hua),結(jie)果(guo)能(neng)力(li)下(xia)降(jiang),因(yin)而(er)在(zai)進(jin)入(ru)盛(sheng)果(guo)期(qi)之(zhi)後(hou),要(yao)注(zhu)意(yi)加(jia)強(qiang)結(jie)果(guo)枝(zhi)的(de)更(geng)新(xin),以(yi)保(bao)持(chi)生(sheng)長(chang)旺(wang)盛(sheng)的(de)壯(zhuang)枝(zhi)結(jie)果(guo)。在(zai)蘋(ping)果(guo)樹(shu)體(ti)中(zhong),一(yi)般(ban)香(xiang)煙(yan)粗(cu)到(dao)大(da)拇(mu)指(zhi)粗(cu)的(de)枝(zhi)條(tiao)均(jun)具(ju)有(you)結(jie)果(guo)能(neng)力(li),但(dan)枝(zhi)的(de)粗(cu)度(du)不(bu)同(tong),所(suo)結(jie)果(guo)實(shi)品(pin)質(zhi)是(shi)有(you)差(cha)別(bie)的(de)。一(yi)般(ban)粗(cu)壯(zhuang)的(de)枝(zhi)條(tiao)中(zhong)積(ji)累(lei)的(de)養(yang)分(fen)多(duo),所(suo)結(jie)果(guo)個(ge)大(da),品(pin)質(zhi)高(gao),而(er)細(xi)弱(ruo)枝(zhi)很(hen)難(nan)結(jie)大(da)果(guo)。因(yin)而(er)對(dui)於(yu)結(jie)果(guo)多(duo)年(nian)之(zhi)後(hou)變(bian)的(de)細(xi)弱(ruo)枝(zhi)要(yao)及(ji)時(shi)疏(shu)除(chu),在(zai)疏(shu)除(chu)細(xi)弱(ruo)枝(zhi)之(zhi)前(qian),要(yao)注(zhu)意(yi)在(zai)準(zhun)備(bei)所(suo)疏(shu)枝(zhi)周(zhou)圍(wei)選(xuan)留(liu)壯(zhuang)枝(zhi)進(jin)行(xing)培(pei)養(yang),以(yi)實(shi)現(xian)替(ti)換(huan)更(geng)新(xin)。一(yi)般(ban)2~7年生的蘋果枝均有成花結果能力,但枝齡不同的枝,所結果實差異較大,其中2~5年生枝齡的枝所結果實品質最優,5年生以上的枝結果能力就有所下降,7nianshengyishangdezhisuojieguoshipinzhiduobugao。yinerzaijinrushengguoqizhihou,meinianyingfenqifenpidizhuyiduijieguozhijinxinggengxin,baochizhuangzhijieguo,tigaoshutijieshinengli。
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