自然生長的果樹,樹冠鬱閉,枝條密生,交叉、重疊,內膛空虛,樹勢衰弱;光照和通風不良,病蟲嚴重;產量不高,易出現大小年結果現象,果實品質低劣;不便於果實采收、疏花疏果和病蟲害防治。通過合理整形修剪,幼樹可以加速擴展樹冠,增加枝量,提前結果,早期豐產,並培養能夠合理利用光能、負擔高額產量和獲得優良品質果實的樹體結構;盛果期通過形修剪,可使樹體發育正常,維持良好的樹體結構,生長和結果關係基本平衡,實現連年高產,並且盡可能延長盛果期年限;衰老樹通過更新修剪,可使老樹複壯,維持一定的產量。
通過整形修剪,可培養成結構良好、骨架牢固、大小整齊的樹冠,並能符合栽培距離的要求。合理修剪可使新梢生長健壯,營養枝和結果枝搭配適當,不同類型、butongchangdudezhitiaonengbaochiyidingdebili,bingshijieguozhifenbuheli,liannianxingchengjianzhuangxinshaohezugoudehuaya,chanlianggaoerwending。helixiujiannengshiguoshutongfengtouguang,guoshipinzhiyouliang、大小均勻、色澤鮮豔。
整表修剪是果樹栽培技術中一項重要的措施,但必須在良好的土、肥、水等綜合管理的基礎上,才能充分整形修剪的作用;而且必須根據樹種、品種、環境條件和栽培管理水平,靈活運用整形修剪技術,其作用才能發揮出來。
目mu前qian,在zai果guo樹shu生sheng產chan上shang僅jin樹shu形xing就jiu有you三san百bai多duo種zhong。雖sui然ran有you品pin種zhong特te性xing的de差cha異yi,但dan這zhe眾zhong多duo的de樹shu形xing都dou使shi果guo樹shu的de豐feng產chan成cheng為wei可ke能neng。如ru果guo辯bian證zheng地di看kan,多duo形xing,便bian意yi為wei無wu形xing。然ran而er,不bu管guan樹shu形xing有you多duo少shao變bian化hua,均jun能neng使shi果guo蔬shu獲huo得de豐feng產chan。這zhe裏li必bi有you一yi種zhong主zhu導dao因yin素su貫guan穿chuan其qi中zhong。
果guo樹shu的de產chan量liang,源yuan於yu多duo個ge因yin素su,就jiu樹shu體ti來lai說shuo,葉ye片pian是shi極ji其qi重zhong要yao的de,它ta是shi葉ye綠lv素su的de載zai體ti,光guang的de受shou體ti,能neng量liang轉zhuan換huan的de加jia工gong廠chang。按an照zhao人ren類lei的de需xu要yao,它ta是shi果guo樹shu獲huo得de豐feng產chan的de主zhu要yao依yi據ju,它ta使shi眾zhong多duo果guo樹shu樹shu形xing存cun在zai合he理li。是shi使shi其qi獲huo得de產chan量liang主zhu導dao因yin素su。實shi踐jian證zheng明ming,如ru果guo我wo們men將jiang全quan部bu葉ye片pian摘zhai除chu,不bu行xing。不bu僅jin行xing整zheng形xing修xiu剪jian而er將jiang全quan部bu葉ye片pian留liu在zai樹shu上shang也ye不bu行xing。這zhe上shang百bai種zhong樹shu形xing的de合he理li存cun在zai以yi及ji各ge種zhong整zheng形xing修xiu剪jian技ji術shu的de事shi實shi,最zui終zhong,都dou統tong一yi在zai了le對dui葉ye片pian的de調tiao整zheng及ji葉ye片pian對dui光guang能neng的de利li用yong上shang。
以yi往wang,實shi踐jian中zhong多duo注zhu重zhong於yu怎zen樣yang對dui果guo樹shu進jin行xing整zheng形xing修xiu剪jian,每mei個ge生sheng產chan者zhe更geng應ying注zhu重zhong於yu為wei使shi麼me對dui果guo樹shu進jin行xing整zheng形xing修xiu剪jian。如ru果guo您nin對dui果guo樹shu整zheng形xing修xiu剪jian技ji術shu的de掌zhang握wo是shi從cong必bi然ran走zou向xiang自zi由you的de話hua,那na麼me,當dang您nin對dui果guo樹shu的de整zheng形xing修xiu剪jian技ji術shu一yi旦dan從cong自zi由you走zou向xiang必bi然ran的de時shi候hou,就jiu會hui在zai果guo樹shu的de整zheng形xing修xiu剪jian上shang獲huo得de更geng大da的de自zi由you。
二、夏季果樹的葉麵調整
對dui果guo樹shu的de整zheng形xing修xiu剪jian,往wang往wang多duo關guan注zhu到dao產chan量liang和he品pin質zhi。實shi際ji上shang,整zheng形xing修xiu剪jian的de作zuo用yong,如ru其qi說shuo是shi在zai調tiao整zheng樹shu體ti的de產chan量liang構gou成cheng,寧ning可ke說shuo是shi在zai調tiao整zheng葉ye片pian的de受shou光guang條tiao件jian。整zheng形xing修xiu剪jian的de直zhi接jie目mu的de,是shi使shi葉ye片pian的de整zheng體ti分fen布bu趨qu於yu合he理li,試shi圖tu將jiang每mei個ge葉ye片pian都dou調tiao整zheng到dao光guang補bu償chang點dian以yi上shang,已yi獲huo得de最zui大da的de光guang合he效xiao率lv。
dangwomenjiaqiangduiguoshuzaipeiguanlideshihou,gengyinggaiqiangtiaoduiguoshuyepiandeguanli。yepianduiguoshuguangnengliyonglvdegaodi,yuyepianzishenjianzaodezhiliangyouguan,ergaonengyepiandechanshengyouyuguangzhiheguangqianghuzuo。dangwomenduiyepianjinxingguanlideshihou,gengyingqingchucunzaiyushutishangqizhongyepiandegongneng。
1.無效葉:長在枝條基部的小葉,淨光合率低,積累和消耗持平,其功能介於無效。
2.低能葉:葉片發育不良,營養較差,這種葉片功能不高,但還能積累一點營養。
3.過大葉:生長在內膛,或長勢過旺,發育不完備,葉片麵積過大而質地薄,光效低或光合效能高而消耗大。
4.高能葉:發育完備,葉片麵積中等大,質地厚,實際效能高。
5.初展葉:是指頂部初步展開的葉片,消耗大。
6.擴大葉:已展開,需要繼續擴大。雖然功能強,但用於建造,消耗多。
7.轉色葉:葉片轉變期雖然功能強,但是積累能力低。
據調查表明,在果樹展葉30天內,特別是在展葉後20~30天(tian)期(qi)間(jian),是(shi)形(xing)成(cheng)高(gao)能(neng)葉(ye)片(pian)的(de)重(zhong)要(yao)時(shi)期(qi)。合(he)理(li)的(de)樹(shu)形(xing),樹(shu)體(ti)內(nei)上(shang)一(yi)年(nian)積(ji)累(lei)的(de)養(yang)分(fen)的(de)多(duo)少(shao),肥(fei)水(shui)的(de)動(dong)態(tai)共(gong)給(gei),有(you)效(xiao)葉(ye)麵(mian)肥(fei)的(de)合(he)理(li)施(shi)用(yong)。化(hua)學(xue)調(tiao)控(kong),都(dou)有(you)助(zhu)於(yu)高(gao)能(neng)葉(ye)片(pian)的(de)形(xing)成(cheng)。
jiandandishuo,guoshudeyepianhanyouyelvti,dangyangguangzhaosheyelvtishi,dainengliangdeguangzichongjiyelvsuzhongdesesufenzi,jingguoyixiliedebianhua,youguangnengzhuanhuachengdianneng,zaijingguowuzhidetonghua,xingchengtanshuihuahewu。duiguoshujinxingzhengxingxiujian,zhongyaodeshiyaogeiguoshudeshuguanchuangzaoyigehaodezheguangtiaojian。suiranguoshuzaiyibandeguangzhaotiaojianxiajiunengjinxingguanghezuoyong,tanguangheqiangdujiaodi,shengchandewuzhishaoyuxiaohaodewuzhi。suizheguangzhaodezengqiang,guangheqiangduyezengjia,dangguangzhaoqiangdudadaozuidazhishi,guangheqiangdujiubuhuizaizengjia,zhezhongxianxiangjiaoguangbaohexianxiang。zheshizhizaodeyangfenzuiduo。ruguoguangzhaoqiangduchaoguoleguangbaohedian,suirannengbeiyepianxishou,danbunengyongyuguanghezuoyong,eryiredexingshishifangdiao。diangaoqiangduruoshi,guangheqiangduyehuibiandi,dangguanghezuoyongshengchengdewuzhiyushutixiaohaodewuzhiyiyangduoshi,yejiushishuojingguangheqiangdudengyulingshi,zheshideguangzhaoqiangduchengweiguangbuchangdian。yikebujinxingzhengxingxiujiandeguoshu,shuguanzhouweideyepianzheguangchongzu,qiguangzhaoqiangduzaiguangbuchangdianyishang,neitangdeyepian,yinduochongzhongzhongdie,jianguangbuzu,huoyinzhengxingxiujianbuheli,yepianzongtifenbubumeitiaozhenghao,zaochengneitangguoyumibi,duoshudeyepiandeguangzhaoqiangduchuzaiguangbuchangdianyixia。jiuyikeguoshudezhengtilaishuo,waibuyepianzhizaodeyangfen,wangwangbeineitangdeyepiansuoxiaohao,ermeiyoujilei,jiashangqitaqiguandehuxixiaohao,zhejiuhennanbaozhengqizhengchangdeshengchangfayu,zhezhongshuluohualuoguojiaozhong,chanliangdi,kangnixingruo,erqiehaihuiyingxiangxianiandechanliang。
rengongzaipeiguoshu,quannianzhenggeguochengdabufendouyaorenlaiguanli,zhipei。qimude,shixianghuodelixiangdewuzhijilei。rangqichanshengjinkenengduodegaonengye,bingbameigeyepiandoutiaozhengdaoguangbuchangdianyishang,youshitongguoduishutidezhengxingxiujianlaishixiande。
果樹的生長、發育、開花、結jie果guo受shou多duo種zhong因yin素su的de作zuo用yong。但dan主zhu要yao有you三san點dian,一yi是shi光guang照zhao,二er是shi溫wen度du,三san是shi肥fei水shui,在zai這zhe三san點dian中zhong,光guang是shi樹shu體ti的de能neng量liang來lai源yuan,如ru果guo沒mei有you光guang的de作zuo用yong,進jin行xing果guo樹shu生sheng產chan是shi不bu可ke能neng的de。溫wen度du是shi樹shu體ti的de生sheng存cun條tiao件jian,肥fei水shui是shi樹shu體ti的de生sheng命ming泉quan源yuan。然ran而er,樹shu體ti的de某mou一yi部bu分fen器qi官guan的de生sheng長chang發fa育yu有you影ying響xiang到dao另ling一yi部bu分fen的de生sheng長chang發fa育yu。這zhe些xie生sheng存cun條tiao件jian及ji各ge器qi官guan的de生sheng長chang發fa育yu是shi互hu相xiang依yi賴lai又you互hu相xiang製zhi約yue的de。要yao想xiang把ba一yi棵ke樹shu管guan理li好hao,就jiu要yao使shi樹shu體ti的de這zhe種zhong動dong態tai平ping衡heng關guan係xi趨qu於yu穩wen定ding,這zhe使shi果guo樹shu正zheng常chang生sheng長chang發fa育yu的de需xu要yao,也ye是shi我wo們men果guo樹shu栽zai培pei管guan理li人ren員yuan的de技ji術shu所suo在zai。
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