園(yuan)林(lin)花(hua)灌(guan)木(mu)修(xiu)剪(jian)是(shi)園(yuan)林(lin)綠(lv)化(hua)撫(fu)育(yu)管(guan)理(li)工(gong)作(zuo)的(de)重(zhong)要(yao)內(nei)容(rong)之(zhi)一(yi),是(shi)保(bao)持(chi)樹(shu)木(mu)健(jian)壯(zhuang)和(he)協(xie)調(tiao)的(de)生(sheng)長(chang)以(yi)提(ti)高(gao)園(yuan)林(lin)綠(lv)化(hua)景(jing)觀(guan)水(shui)平(ping)的(de)關(guan)鍵(jian)技(ji)術(shu)措(cuo)施(shi)。其(qi)主(zhu)要(yao)內(nei)容(rong)是(shi)對(dui)園(yuan)林(lin)樹(shu)木(mu)在(zai)生(sheng)長(chang)期(qi)內(nei)進(jin)行(xing)整(zheng)形(xing)和(he)修(xiu)剪(jian),修(xiu)剪(jian)的(de)方(fang)法(fa)和(he)頻(pin)率(lv)應(ying)該(gai)根(gen)據(ju)應(ying)用(yong)的(de)目(mu)的(de)而(er)定(ding)。
一、為確保移栽成活而修剪
在園林綠化施工過程中,起苗、運輸、搬運乃至栽植甚至回填等環節都可能弄傷一些根係,尤其在大苗挖掘和大樹用機械起苗吊裝時散坨、duangendefengxianjiuhuigengda。youqizaifeizhengchangzhishujijiedexiaji,huaguanmuyizaihouchuxianjiahuogengshishichangfasheng。weiquebaochenghuo,zaiqimiaoqianhuoqimiaohouyinggailijijinxingzhongjian。duiyucongwaidiqiyundemiaomu,zaiqimiaoshidaduobudaituqiu,keyibaluogenzhanshangnijiang,zaiyongshicaohecaodaibaoguo,bingzaizhuangchezhiqianjinxingzhongjian。ruguozaochunqiwenhuishenghenkuai,jiuhuichuxiantuwendadadiyuqiwendexianxiang,yushimengyazhanyehechoushengxinshaodesudujiuhuibixingenshengchangdesudukuaideduo,zheshigenbuxishuimanzubuleshuifendexiaohao,jiudejiangshumiaoshangguozaomengfadenenshaomodiao,jijinxingbuchangxiujian。duiyuzaoxingyoumeidezhenguiyinjinshuzhong,zekeyicaiyongcaoliandandubaozhuanghuoyongmuxiangjiazhihouyunshu,dingzhihouzhixuxiuqushuailaodezhitiaohekuhuangdeyepian,buyaojinxingzhongjian。
二、花灌木定植後的修剪
苗miao木mu定ding植zhi後hou,首shou先xian用yong修xiu剪jian進jin行xing樹shu冠guan整zheng形xing,對dui於yu過guo長chang和he過guo密mi的de叢cong生sheng枝zhi進jin行xing短duan截jie和he疏shu剪jian。對dui於yu即ji將jiang用yong於yu重zhong點dian部bu位wei進jin行xing細xi致zhi觀guan賞shang的de一yi些xie灌guan木mu,如ru文wen冠guan果guo、火(huo)炬(ju)樹(shu)等(deng),應(ying)該(gai)根(gen)據(ju)造(zao)型(xing)的(de)需(xu)要(yao),將(jiang)叢(cong)生(sheng)枝(zhi)剔(ti)除(chu),保(bao)留(liu)側(ce)枝(zhi)勻(yun)稱(cheng),主(zhu)幹(gan)光(guang)滑(hua)的(de)主(zhu)枝(zhi),通(tong)過(guo)修(xiu)剪(jian)短(duan)截(jie)甚(shen)至(zhi)牽(qian)拉(la)把(ba)樹(shu)形(xing)調(tiao)整(zheng)成(cheng)圓(yuan)整(zheng)的(de)小(xiao)喬(qiao)木(mu)狀(zhuang)。在(zai)樹(shu)苗(miao)定(ding)植(zhi)後(hou),還(hai)可(ke)以(yi)通(tong)過(guo)繩(sheng)拉(la)和(he)木(mu)棍(gun)支(zhi)撐(cheng)等(deng)方(fang)法(fa)矯(jiao)正(zheng)下(xia)垂(chui)傾(qing)斜(xie)和(he)平(ping)行(xing)的(de)側(ce)主(zhu)枝(zhi)和(he)測(ce)枝(zhi),還(hai)應(ying)剪(jian)掉(diao)接(jie)近(jin)地(di)麵(mian)的(de)枝(zhi)條(tiao)以(yi)及(ji)樹(shu)膛(tang)內(nei)的(de)直(zhi)上(shang)枝(zhi)交(jiao)叉(cha)枝(zhi)等(deng)。
三、為控製樹體大小而修剪
園林花灌木不能像自然界的樹木一樣任其生長,恣意蔓延。因為他們多是房屋、亭台、假山、塑像以及其他園林建築、小品或水麵的襯景,過於高大、粗cu獷guang,就jiu會hui影ying響xiang景jing觀guan的de整zheng體ti效xiao果guo。即ji便bian是shi草cao坪ping中zhong或huo疏shu林lin下xia的de花hua灌guan木mu,如ru果guo不bu經jing修xiu剪jian,樹shu叢cong會hui不bu斷duan擴kuo大da,相xiang互hu擁yong擠ji在zai一yi起qi,使shi規gui整zheng的de園yuan林lin布bu局ju變bian成cheng亂luan樹shu叢cong,影ying響xiang通tong風feng,導dao致zhi病bing蟲chong害hai發fa生sheng,最zui終zhong加jia速su衰shuai老lao,縮suo短duan景jing觀guan的de觀guan賞shang壽shou命ming。所suo以yi在zai我wo國guo北bei方fang,建jian議yi至zhi少shao進jin行xing三san次ci修xiu剪jian,第di一yi次ci,早zao春chun樹shu葉ye萌meng發fa之zhi前qian,將jiang病bing枝zhi、殘枝、徒長枝有凍害、蟲卵寄生的枝條刪除或短截;但是不要打掉花枝;按an照zhao計ji劃hua進jin行xing重zhong剪jian,促cu使shi今jin後hou整zheng體ti回hui縮suo與yu更geng新xin。第di二er次ci,花hua謝xie後hou三san周zhou至zhi一yi月yue,剪jian掉diao殘can花hua,疏shu除chu新xin生sheng萌meng蘖nie和he過guo密mi處chu的de小xiao枝zhi,增zeng強qiang通tong風feng透tou光guang,預yu防fang病bing蟲chong害hai發fa生sheng;進行整體的短截和修形;第三次,立秋後落葉前,將果實剪除(冬果宿存觀賞性強的除外)。
四、因樹勢(健康)而修剪與整形
當幼樹生長旺盛時,以整形為主,宜輕剪。嚴格控製直立枝,斜生枝的上位芽冬剪時應剝掉,防止生長直立枝。一切病蟲枝、幹枯枝、人為破壞枝、徒長枝等用疏剪方法剪去。叢生花灌木的直立枝,選生長健壯的加以摘心,促其早開花。
壯zhuang年nian樹shu應ying充chong分fen利li用yong立li體ti空kong間jian,促cu使shi多duo開kai花hua。於yu休xiu眠mian期qi修xiu剪jian時shi,在zai秋qiu梢shao以yi下xia適shi當dang部bu位wei進jin行xing短duan截jie,同tong時shi逐zhu年nian選xuan留liu部bu分fen根gen蘖nie,並bing疏shu掉diao部bu分fen老lao枝zhi,以yi保bao證zheng枝zhi條tiao不bu斷duan更geng新xin,保bao持chi豐feng滿man株zhu形xing。
老弱樹木以更新複壯為主,采用重短截的方法,使營養集中於少數腋芽,萌發壯枝,及時疏刪細弱枝、病蟲枝、枯死枝。
五、根據花灌木生長開花或結果的栽培目的進行修剪與整形
春季開花,花芽(或混合芽)著生在二年生枝條上的花灌木。如連翹、榆葉梅、毛mao櫻ying桃tao等deng灌guan木mu是shi在zai前qian一yi年nian的de夏xia季ji高gao溫wen時shi進jin行xing花hua芽ya分fen化hua,經jing過guo冬dong季ji低di溫wen階jie段duan於yu第di二er年nian春chun季ji開kai花hua。因yin此ci,應ying在zai花hua殘can後hou葉ye芽ya開kai始shi膨peng大da尚shang未wei萌meng發fa時shi進jin行xing修xiu剪jian。修xiu剪jian的de部bu位wei依yi植zhi物wu種zhong類lei及ji純chun花hua芽ya或huo混hun合he芽ya的de不bu同tong而er有you所suo不bu同tong。連lian翹qiao、榆葉梅、丁香等可在開花枝條基部留2-4個飽滿芽進行短截。牡丹則僅將殘花剪除即可。夏秋季開花,花芽(或混合芽)著生在當年生枝條上的花灌木。如紅玫瑰、黃刺玫、珍珠梅等是在當年萌發枝上形成花芽,因此應在休眠期進行修剪。將二年生枝基部留2-3個ge飽bao滿man芽ya或huo一yi對dui對dui生sheng的de芽ya進jin行xing重zhong剪jian,剪jian後hou可ke萌meng發fa出chu一yi些xie茁zhuo壯zhuang的de枝zhi條tiao,花hua枝zhi會hui少shao些xie,但dan由you於yu營ying養yang集ji成cheng會hui產chan生sheng較jiao大da的de花hua朵duo。而er對dui於yu需xu要yao結jie果guo觀guan賞shang或huo食shi用yong的de果guo樹shu,則ze要yao根gen據ju著zhe果guo的de特te點dian進jin行xing修xiu剪jian並bing兼jian顧gu樹shu勢shi的de平ping衡heng,使shi側ce枝zhi尤you其qi是shi果guo枝zhi粗cu壯zhuang,層ceng次ci分fen明ming,既ji豐feng碩shuo又you美mei觀guan。
六、為達到設計的樹形而修剪
雖sui然ran作zuo為wei園yuan林lin重zhong要yao設she計ji元yuan素su的de灌guan木mu,以yi其qi自zi然ran的de形xing式shi和he質zhi感gan就jiu可ke以yi使shi人ren賞shang心xin悅yue目mu,但dan是shi園yuan林lin設she計ji人ren員yuan通tong過guo對dui其qi實shi施shi造zao型xing,使shi其qi達da到dao與yu建jian築zhu之zhi間jian、與其他不同形式的樹木之間的協調和特有的意蘊,簡言之,裝飾性、符號功能越來越受到追捧和效仿,園林中的灌木被用來做成拱門、拱洞、牆桓、長廊、棚架等功能性的實體,更為普遍的塑成花鳥獸、幾何體等純粹的裝飾作用。
在城市用地日益稀缺的今天,立體綠化、空中花園的設計以及生態景觀的模仿(如室內的椰風海前、南國風情)都成了現實,在有限的空間裏塑造深遠的綠境、勝景,此中的植材都要經過精心的修剪。
七、為樹木的複壯更新而修剪
對dui已yi經jing進jin入ru衰shuai老lao的de植zhi株zhu進jin行xing強qiang修xiu剪jian,剪jian掉diao大da部bu分fen側ce枝zhi和he衰shuai老lao的de主zhu枝zhi,甚shen至zhi把ba主zhu枝zhi也ye分fen次ci鋸ju掉diao,選xuan留liu有you培pei養yang前qian途tu的de新xin枝zhi作zuo為wei培pei養yang的de主zhu幹gan,用yong以yi形xing成cheng新xin的de樹shu冠guan。這zhe種zhong做zuo法fa叫jiao做zuo更geng新xin複fu壯zhuang。通tong過guo更geng新xin複fu壯zhuang,較jiao之zhi新xin建jian植zhi的de新xin苗miao生sheng長chang速su度du較jiao快kuai,能neng夠gou延yan續xu理li想xiang的de景jing觀guan效xiao果guo。為wei了le達da到dao理li想xiang的de複fu壯zhuang效xiao果guo,應ying該gai提ti早zao做zuo以yi規gui劃hua,一yi般ban在zai早zao春chun第di一yi次ci修xiu剪jian時shi即ji留liu好hao備bei用yong的de更geng新xin枝zhi,通tong過guo多duo次ci的de一yi年nian半ban至zhi兩liang年nian的de時shi間jian即ji可ke完wan成cheng。
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