隨(sui)著(zhe)西(xi)葫(hu)蘆(lu)葉(ye)片(pian)的(de)逐(zhu)漸(jian)增(zeng)多(duo),容(rong)易(yi)造(zao)成(cheng)田(tian)間(jian)鬱(yu)閉(bi),通(tong)風(feng)透(tou)光(guang)性(xing)差(cha),下(xia)部(bu)葉(ye)片(pian)難(nan)以(yi)見(jian)光(guang)進(jin)行(xing)光(guang)合(he)作(zuo)用(yong),還(hai)會(hui)因(yin)為(wei)濕(shi)度(du)大(da),容(rong)易(yi)侵(qin)染(ran)病(bing)原(yuan)菌(jun),導(dao)致(zhi)病(bing)害(hai)暴(bao)發(fa)。特別是在深冬季節,棚室內溫度低,濕度大,病原菌多,加上下部葉片在噴藥、摘瓜時容易受傷折斷,更容易導致病害發生。因此,西葫蘆進行合理摘葉,改善通風透光條件,是十分必要的。
西xi葫hu蘆lu摘zhai葉ye應ying視shi植zhi株zhu的de長chang勢shi而er定ding,長chang勢shi旺wang的de可ke以yi多duo摘zhai葉ye,弱ruo的de則ze應ying少shao摘zhai,以yi保bao證zheng田tian間jian通tong風feng透tou光guang良liang好hao為wei準zhun。為wei了le避bi免mian莖jing稈gan受shou傷shang後hou難nan以yi愈yu合he,建jian議yi菜cai農nong隻zhi去qu葉ye不bu去qu柄bing。因yin葉ye柄bing粗cu、脆(cui),從(cong)基(ji)部(bu)摘(zhai)除(chu),莖(jing)部(bu)容(rong)易(yi)出(chu)現(xian)大(da)的(de)傷(shang)口(kou),不(bu)易(yi)愈(yu)合(he),葉(ye)片(pian)則(ze)可(ke)全(quan)部(bu)或(huo)大(da)部(bu)摘(zhai)除(chu),這(zhe)樣(yang)可(ke)促(cu)使(shi)葉(ye)柄(bing)更(geng)快(kuai)地(di)幹(gan)枯(ku)脫(tuo)落(luo)。此(ci)外(wai)還(hai)需(xu)注(zhu)意(yi),摘(zhai)除(chu)葉(ye)片(pian)時(shi)最(zui)好(hao)要(yao)有(you)幾(ji)個(ge)連(lian)續(xu)的(de)晴(qing)天(tian),這(zhe)樣(yang)棚(peng)室(shi)內(nei)的(de)環(huan)境(jing)較(jiao)為(wei)幹(gan)燥(zao),不(bu)易(yi)感(gan)染(ran)病(bing)害(hai)。摘(zhai)葉(ye)後(hou)菜(cai)農(nong)可(ke)噴(pen)布(bu)鏈(lian)黴(mei)素(su)4000倍液或加瑞農600倍液,提前預防病害侵染。
二、保花保瓜
棚室栽培西葫蘆,幼苗發育時期多處於短日照、低夜溫的環境條件下,利於雌花形成,一般長至3~4pianzhenyeshijiuyoucihuafasheng,shenzhijiejieyoucihua,yijieduogecihua。guoduodecihuarenqishengchangfayu,biranxiaohaodaliangdeyoujiyingyang,yangfenjingzhengjilie,yingxiangzhizhuheyouguashengchang,haihuiyinqidalianghuagua。yinci,guoduodecihuabixujizaoshuchu,yijianshaoyingyangjingzheng,cujinzuogua。guoduodecihuayiganggangxianlushishuchuzuihao。shuchucihuashuliangdeduoshao,yingyijuguayangchangshierding。changshiruozhe,yingxianshuchugengua,yihouzaimeisanjiezuoyouliuyicihua;瓜秧長勢健壯的可留下根瓜,但應及早采收,以後每二節左右留一雌花。並應根據瓜秧長勢、結瓜情況及時調整留瓜量,以減少不必要的營養消耗,維持瓜秧健壯的生長勢,達到留一瓜成一瓜。
三、結瓜後期要適時落蔓
結瓜後期,植株較為高大,有些甚至超過2米,給采摘、噴(pen)藥(yao)等(deng)管(guan)理(li)帶(dai)來(lai)麻(ma)煩(fan),菜(cai)農(nong)應(ying)注(zhu)意(yi)適(shi)時(shi)落(luo)蔓(man),落(luo)地(di)的(de)莖(jing)蔓(man)可(ke)用(yong)土(tu)埋(mai)壓(ya),促(cu)進(jin)其(qi)新(xin)生(sheng)不(bu)定(ding)根(gen),提(ti)高(gao)根(gen)係(xi)吸(xi)收(shou)水(shui)肥(fei)的(de)能(neng)力(li),延(yan)緩(huan)植(zhi)株(zhu)衰(shuai)老(lao),提(ti)高(gao)後(hou)期(qi)產(chan)量(liang)。
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