1樹形的轉變
喬qiao化hua蘋ping果guo園yuan目mu前qian生sheng產chan中zhong主zhu要yao以yi自zi由you紡fang錘chui形xing和he改gai良liang紡fang錘chui形xing整zheng形xing為wei主zhu,在zai幼you樹shu期qi及ji初chu結jie果guo期qi,為wei了le提ti高gao留liu枝zhi量liang,增zeng加jia光guang合he產chan物wu積ji累lei,留liu的de枝zhi軸zhou較jiao多duo,每mei株zhu留liu枝zhi軸zhou在zai10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;通tong過guo鋸ju除chu過guo低di大da枝zhi提ti幹gan,以yi增zeng加jia反fan射she光guang的de利li用yong率lv,這zhe樣yang通tong過guo綜zong合he措cuo施shi的de實shi施shi,就jiu使shi蘋ping果guo生sheng產chan中zhong應ying用yong的de樹shu形xing發fa生sheng了le變bian化hua,即ji由you紡fang錘chui形xing向xiang開kai心xin形xing轉zhuan變bian。開kai心xin形xing總zong體ti枝zhi量liang少shao,光guang能neng利li用yong充chong分fen。在zai盛sheng果guo期qi後hou,利li用yong開kai心xin形xing有you利li於yu豐feng產chan、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jiang667 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ban2~7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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