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。
當dang我wo們men加jia強qiang對dui果guo樹shu栽zai培pei管guan理li的de時shi候hou,更geng應ying該gai強qiang調tiao對dui果guo樹shu葉ye片pian的de管guan理li。葉ye片pian對dui果guo樹shu光guang能neng利li用yong率lv的de高gao低di,與yu葉ye片pian自zi身shen建jian造zao的de質zhi量liang有you關guan,而er高gao能neng葉ye片pian的de產chan生sheng又you與yu光guang質zhi和he光guang強qiang互hu作zuo。當dang我wo們men對dui葉ye片pian進jin行xing管guan理li的de時shi候hou,更geng應ying清qing楚chu存cun在zai於yu樹shu體ti上shang七qi種zhong葉ye片pian的de功gong能neng。
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20~30tianqijian,shixingchenggaonengyepiandezhongyaoshiqi。helideshuxing,shutineishangyinianjileideyangfendeduoshao,feishuidedongtaigonggei,youxiaoyemianfeidehelishiyong。huaxuetiaokong,douyouzhuyugaonengyepiandexingcheng。
簡jian單dan地di說shuo,果guo樹shu的de葉ye片pian含han有you葉ye綠lv體ti,當dang陽yang光guang照zhao射she葉ye綠lv體ti時shi,帶dai能neng量liang的de光guang子zi衝chong擊ji葉ye綠lv素su中zhong的de色se素su分fen子zi,經jing過guo一yi係xi列lie的de變bian化hua,由you光guang能neng轉zhuan化hua成cheng電dian能neng,在zai經jing過guo物wu質zhi的de同tong化hua,形xing成cheng碳tan水shui化hua合he物wu。對dui果guo樹shu進jin行xing整zheng形xing修xiu剪jian,重zhong要yao的de是shi要yao給gei果guo樹shu的de樹shu冠guan創chuang造zao一yi個ge好hao的de著zhe光guang條tiao件jian。雖sui然ran果guo樹shu在zai一yi般ban的de光guang照zhao條tiao件jian下xia就jiu能neng進jin行xing光guang合he作zuo用yong,談tan光guang合he強qiang度du較jiao低di,生sheng產chan的de物wu質zhi少shao於yu消xiao耗hao的de物wu質zhi。隨sui著zhe光guang照zhao的de增zeng強qiang,光guang合he強qiang度du也ye增zeng加jia,當dang光guang照zhao強qiang度du達da到dao最zui大da值zhi時shi,光guang合he強qiang度du就jiu不bu會hui再zai增zeng加jia,這zhe種zhong現xian象xiang叫jiao光guang飽bao和he現xian象xiang。這zhe是shi製zhi造zao的de養yang分fen最zui多duo。如ru果guo光guang照zhao強qiang度du超chao過guo了le光guang飽bao和he點dian,雖sui然ran能neng被bei葉ye片pian吸xi收shou,但dan不bu能neng用yong於yu光guang合he作zuo用yong,而er一yi熱re的de形xing式shi釋shi放fang掉diao。點dian高gao強qiang度du弱ruo時shi,光guang合he強qiang度du也ye會hui變bian低di,當dang光guang合he作zuo用yong生sheng成cheng的de物wu質zhi與yu樹shu體ti消xiao耗hao的de物wu質zhi一yi樣yang多duo時shi,也ye就jiu是shi說shuo淨jing光guang合he強qiang度du等deng於yu零ling時shi,這zhe時shi的de光guang照zhao強qiang度du稱cheng為wei光guang補bu償chang點dian。一yi棵ke不bu進jin行xing整zheng形xing修xiu剪jian的de果guo樹shu,樹shu冠guan周zhou圍wei的de葉ye片pian著zhe光guang充chong足zu,其qi光guang照zhao強qiang度du在zai光guang補bu償chang點dian以yi上shang,內nei堂tang的de葉ye片pian,因yin多duo衝chong重zhong重zhong疊die,見jian光guang不bu足zu,或huo因yin整zheng形xing修xiu剪jian不bu合he理li,葉ye片pian總zong體ti分fen布bu不bu沒mei調tiao整zheng好hao,造zao成cheng內nei膛tang過guo於yu密mi閉bi,多duo數shu的de葉ye片pian的de光guang照zhao強qiang度du處chu在zai光guang補bu償chang點dian一yi下xia。就jiu一yi棵ke果guo樹shu的de整zheng體ti來lai說shuo,外wai部bu葉ye片pian製zhi造zao的de養yang分fen,往wang往wang被bei內nei膛tang的de葉ye片pian所suo消xiao耗hao,而er沒mei有you積ji累lei,加jia上shang其qi他ta器qi官guan的de呼hu吸xi消xiao耗hao,這zhe就jiu很hen難nan保bao證zheng其qi正zheng常chang的de生sheng長chang發fa育yu,這zhe種zhong數shu落luo花hua落luo果guo較jiao重zhong,產chan量liang低di,抗kang逆ni性xing弱ruo,而er且qie還hai會hui影ying響xiang下xia年nian的de產chan量liang。
人(ren)工(gong)栽(zai)培(pei)果(guo)樹(shu),全(quan)年(nian)整(zheng)個(ge)過(guo)程(cheng)大(da)部(bu)分(fen)都(dou)要(yao)人(ren)來(lai)管(guan)理(li),支(zhi)配(pei)。其(qi)目(mu)的(de),是(shi)想(xiang)獲(huo)得(de)理(li)想(xiang)的(de)物(wu)質(zhi)積(ji)累(lei)。讓(rang)其(qi)產(chan)生(sheng)盡(jin)可(ke)能(neng)多(duo)的(de)高(gao)能(neng)葉(ye),並(bing)把(ba)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),又(you)是(shi)通(tong)過(guo)對(dui)樹(shu)體(ti)的(de)整(zheng)形(xing)修(xiu)剪(jian)來(lai)實(shi)現(xian)的(de)。
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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