一、heliliugua。cainongzaidongjizhongzhisiguashiyibancaiquwuliupianyeliuyigegua,zheyangjinengbaozhengguatiaodedaochongzudeyingyang,younengbaozhengzhizhushengchangwangsheng。yuexiasiguazhongzhishi,youyuzhizhushengchangkuai,cainongyibandoushisansipianyeliuyigegua,dancainongyidingyaozhuyizhizhuchangshi,genjuchangshijuedingliugua。zaishengchangwangshengdekezishang,keyisansipianyeliuyigegua;在生長較弱的棵子上,則應該適當減少留瓜,改為五六片葉留一個瓜,否則會導致植株負擔過重,根係、莖、葉生長發育不良,最終引起植株早衰。建議菜農根據植株生長狀況隨時調整,合理留瓜。
二、調整棚室溫度。絲瓜植株生長適宜溫度白天25-32℃,夜間15-20℃。立(li)夏(xia)後(hou)室(shi)內(nei)溫(wen)度(du)迅(xun)速(su)升(sheng)高(gao),所(suo)以(yi)要(yao)及(ji)時(shi)采(cai)取(qu)措(cuo)施(shi)降(jiang)低(di)棚(peng)溫(wen)。首(shou)先(xian),要(yao)加(jia)強(qiang)通(tong)風(feng),中(zhong)午(wu)可(ke)敞(chang)開(kai)棚(peng)門(men),加(jia)大(da)通(tong)風(feng)口(kou)。其(qi)次(ci),設(she)置(zhi)遮(zhe)陽(yang)網(wang),遮(zhe)陽(yang)網(wang)主(zhu)要(yao)是(shi)通(tong)過(guo)遮(zhe)擋(dang)部(bu)分(fen)陽(yang)光(guang),減(jian)少(shao)熱(re)量(liang)來(lai)降(jiang)低(di)棚(peng)溫(wen)。早(zao)上(shang)、下午光照弱,為提高光合效率,遮陽網應在上午11點以後到下午3點之前使用。再次,合理澆水降低地溫。水分蒸發會吸收大量的熱,合理澆水也是降低棚內溫度的重要措施,菜農要合理利用。
三、巧施肥水。絲瓜喜潮濕,不耐幹旱,適宜土壤含水量為70%-85%,應(ying)及(ji)時(shi)澆(jiao)水(shui),防(fang)止(zhi)絲(si)瓜(gua)植(zhi)株(zhu)因(yin)幹(gan)旱(han)早(zao)衰(shuai)。菜(cai)農(nong)應(ying)在(zai)天(tian)氣(qi)適(shi)合(he)的(de)條(tiao)件(jian)下(xia),在(zai)摘(zhai)心(xin)後(hou)澆(jiao)一(yi)水(shui),蘸(zhan)瓜(gua)後(hou)兩(liang)天(tian)澆(jiao)一(yi)水(shui),摘(zhai)瓜(gua)前(qian)兩(liang)天(tian)澆(jiao)一(yi)水(shui),這(zhe)就(jiu)可(ke)以(yi)促(cu)進(jin)瓜(gua)條(tiao)和(he)植(zhi)株(zhu)生(sheng)長(chang),預(yu)防(fang)早(zao)衰(shuai)。結(jie)果(guo)期(qi),營(ying)養(yang)生(sheng)長(chang)和(he)生(sheng)殖(zhi)生(sheng)長(chang)都(dou)很(hen)旺(wang)盛(sheng),對(dui)養(yang)分(fen)需(xu)求(qiu)量(liang)很(hen)大(da),所(suo)以(yi)菜(cai)農(nong)要(yao)注(zhu)意(yi)及(ji)時(shi)追(zhui)肥(fei),保(bao)證(zheng)營(ying)養(yang)供(gong)應(ying)充(chong)足(zu)。
科ke學xue施shi肥fei,最zui好hao是shi種zhong前qian先xian測ce土tu,根gen據ju土tu壤rang養yang分fen狀zhuang況kuang配pei方fang施shi肥fei。因yin為wei菜cai農nong的de施shi肥fei習xi慣guan不bu同tong,棚peng室shi土tu壤rang的de養yang分fen狀zhuang況kuang差cha異yi極ji大da,有you些xie棚peng室shi內nei可ke能neng出chu現xian鉀jia肥fei嚴yan重zhong超chao標biao、氮肥不足的情況,有些棚室內則是氮肥嚴重超標、jiafeibuzu,qingkuangbutong,shifeizhongdianyejiucunzaichayi。jizhedaoshouguangshiturangfeiliaojiancezhongxincaifangshilejiedao,shouguangshiluochengjiedaoyicainongdapengturangzhongjiayuansuhanliangdadao2000毫克/千克,已遠遠超過植株需求。此時若再施用鉀肥,必定影響絲瓜的正常生長發育。
四、預(yu)防(fang)病(bing)蟲(chong)害(hai)。總(zong)的(de)來(lai)說(shuo),絲(si)瓜(gua)抗(kang)病(bing)性(xing)很(hen)強(qiang),病(bing)害(hai)較(jiao)少(shao),但(dan)夏(xia)季(ji)棚(peng)室(shi)高(gao)溫(wen)高(gao)濕(shi)的(de)環(huan)境(jing),易(yi)導(dao)致(zhi)細(xi)菌(jun)性(xing)病(bing)害(hai)和(he)病(bing)毒(du)病(bing)的(de)高(gao)發(fa),因(yin)而(er)在(zai)管(guan)理(li)上(shang)還(hai)應(ying)加(jia)強(qiang)預(yu)防(fang)措(cuo)施(shi)。細(xi)菌(jun)性(xing)病(bing)害(hai)多(duo)在(zai)落(luo)蔓(man)後(hou)發(fa)生(sheng),因(yin)而(er)在(zai)落(luo)蔓(man)前(qian)應(ying)噴(pen)施(shi)農(nong)用(yong)鏈(lian)黴(mei)素(su)3000倍加以預防。對於病毒病的預防,重點在於傳毒害蟲的防治:設置防蟲網,預防棚室內外傳毒害蟲傳播;懸掛黃色粘蟲板,粘殺棚內害蟲,並觀察蟲情;及時用藥,如啶蟲脒、吡蟲啉等。同時,還要結合噴施施寧南黴素、菇類蛋白等,提高植株抗病能力,預防病毒病。
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