生sheng產chan中zhong,摘zhai葉ye是shi西xi紅hong柿shi管guan理li中zhong一yi項xiang必bi要yao的de措cuo施shi。合he理li摘zhai葉ye能neng有you效xiao改gai善shan株zhu行xing間jian的de通tong風feng透tou光guang性xing,促cu進jin西xi紅hong柿shi轉zhuan色se,減jian少shao養yang分fen消xiao耗hao及ji病bing蟲chong害hai的de發fa生sheng,但dan給gei西xi紅hong柿shi摘zhai葉ye一yi定ding要yao適shi度du。具ju體ti有you哪na些xie要yao求qiu呢ne?現xian介jie紹shao如ru下xia。
一、摘葉應分次、適時進行
應分次摘除病葉、黃葉、老葉、choumiye。yaoyijinengbaozhengguoshishengchangsuoxudeguanghechanwu,youbuhuizaochengtianjianyubiweibiaozhun。lingwai,zhaiyeqian,haiyingmiqieguanzhutianqiyubao,xuanzeqingtianshangwujinxing,jinliangbikailianyintiandaye,yilishangkouzairiguangzhaoshejijiaogaowenduxiajinkuaiganzaoyuhe。zhaiyeshi,jinliangbimianjiangshangkoukuoda。zhaiyehoujishipenshifangzhihuimeibingdeyaowu,kezhongdianpenshijingganxiabuyinzhaiyexingchengdechuangkou,youqibeiguangdechuangkou。yudaolianyintianhuoxiayutianpengneishidudashi,kejieheyanwujixunpengdefangfafangzhi。
二、植株下部黃化葉片宜晚摘
植(zhi)株(zhu)葉(ye)片(pian)黃(huang)化(hua),葉(ye)綠(lv)素(su)減(jian)少(shao),光(guang)合(he)作(zuo)用(yong)受(shou)到(dao)很(hen)大(da)影(ying)響(xiang),造(zao)成(cheng)植(zhi)株(zhu)光(guang)合(he)產(chan)物(wu)不(bu)足(zu),西(xi)紅(hong)柿(shi)果(guo)實(shi)生(sheng)長(chang)受(shou)阻(zu)。然(ran)而(er),黃(huang)化(hua)的(de)葉(ye)片(pian)光(guang)合(he)作(zuo)用(yong)並(bing)未(wei)停(ting)止(zhi)。若(ruo)把(ba)黃(huang)葉(ye)直(zhi)接(jie)摘(zhai)除(chu),植(zhi)株(zhu)的(de)葉(ye)片(pian)太(tai)少(shao),光(guang)合(he)產(chan)物(wu)更(geng)加(jia)不(bu)足(zu),西(xi)紅(hong)柿(shi)果(guo)實(shi)生(sheng)長(chang)發(fa)育(yu)受(shou)到(dao)的(de)影(ying)響(xiang)更(geng)大(da)。有(you)經(jing)驗(yan)的(de)菜(cai)農(nong)都(dou)知(zhi)道(dao),生(sheng)長(chang)正(zheng)常(chang)的(de)西(xi)紅(hong)柿(shi)植(zhi)株(zhu)在(zai)摘(zhai)葉(ye)時(shi),最(zui)好(hao)不(bu)要(yao)將(jiang)未(wei)成(cheng)熟(shu)果(guo)穗(sui)下(xia)的(de)葉(ye)片(pian)全(quan)部(bu)摘(zhai)除(chu),而(er)應(ying)保(bao)留(liu)1~2片。尤其是光照較強時,更不能摘葉過多,否則會導致西紅柿果實著色不佳,膨大受到影響。
所(suo)以(yi),對(dui)於(yu)黃(huang)化(hua)葉(ye)片(pian)不(bu)應(ying)該(gai)過(guo)早(zao)摘(zhai)除(chu),而(er)應(ying)采(cai)取(qu)措(cuo)施(shi)解(jie)決(jue)黃(huang)葉(ye)問(wen)題(ti),盡(jin)量(liang)讓(rang)黃(huang)化(hua)的(de)葉(ye)片(pian)恢(hui)複(fu)正(zheng)常(chang)。造(zao)成(cheng)西(xi)紅(hong)柿(shi)黃(huang)葉(ye)的(de)原(yuan)因(yin)很(hen)多(duo),根(gen)係(xi)受(shou)傷(shang)、缺素、幹旱、氣害、藥yao害hai等deng都dou可ke能neng引yin起qi黃huang葉ye,故gu需xu要yao對dui症zheng治zhi療liao。根gen係xi受shou傷shang引yin起qi的de,建jian議yi菜cai農nong朋peng友you可ke以yi使shi用yong菌jun物wu全quan元yuan螯ao合he生sheng物wu菌jun肥fei,促cu進jin根gen係xi生sheng長chang,保bao證zheng養yang分fen的de充chong足zu供gong應ying,增zeng強qiang植zhi株zhu的de抵di抗kang力li,緩huan解jie黃huang葉ye;土壤透氣性差引起的,應從增施有機肥、深翻改良土壤等做起;缺素引起的老葉變黃主要是缺氮、鎂等,新葉變黃主要是缺鐵、鋅等,按所缺元素不同,葉麵噴施配合隨水衝施肥料,可以盡快解決缺素引起的黃葉;幹旱後要及時澆水,氣害則需在去除氣害源頭的基礎上,加強通風。
三、摘葉不可過狠
頂葉摘除過狠,就會造成光合產物製造少、積累不足,果實生長發育得不到足夠的營養而形成空洞果,而且果實小、產(chan)量(liang)低(di),同(tong)時(shi)還(hai)易(yi)受(shou)強(qiang)光(guang)直(zhi)射(she)而(er)出(chu)現(xian)日(ri)灼(zhuo)果(guo)。葉(ye)片(pian)摘(zhai)除(chu)過(guo)狠(hen)還(hai)會(hui)加(jia)重(zhong)根(gen)係(xi)的(de)衰(shuai)老(lao),致(zhi)使(shi)水(shui)分(fen)和(he)礦(kuang)物(wu)質(zhi)營(ying)養(yang)供(gong)應(ying)不(bu)足(zu),又(you)增(zeng)加(jia)了(le)空(kong)洞(dong)果(guo)的(de)比(bi)例(li)。因(yin)此(ci),預(yu)防(fang)西(xi)紅(hong)柿(shi)果(guo)空(kong)洞(dong)必(bi)先(xian)從(cong)保(bao)護(hu)葉(ye)片(pian)開(kai)始(shi),防(fang)止(zhi)摘(zhai)葉(ye)過(guo)重(zhong)。在(zai)摘(zhai)心(xin)時(shi),上(shang)層(ceng)果(guo)穗(sui)上(shang)方(fang)應(ying)保(bao)留(liu)1~2片葉。
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