一、澆jiao水shui冬dong季ji溫wen室shi蔬shu菜cai澆jiao水shui應ying安an排pai在zai晴qing天tian,澆jiao水shui後hou最zui好hao能neng有you幾ji個ge連lian續xu晴qing天tian。一yi天tian中zhong應ying選xuan擇ze在zai上shang午wu,這zhe不bu僅jin是shi水shui溫wen和he地di溫wen差cha別bie較jiao小xiao,地di溫wen容rong易yi恢hui複fu,而er且qie還hai有you充chong分fen的de時shi間jian來lai排pai除chu因yin澆jiao水shui增zeng加jia的de空kong氣qi濕shi度du。一yi般ban不bu宜yi選xuan擇ze在zai中zhong午wu,以yi免mian高gao溫wen時shi澆jiao水shui影ying響xiang根gen係xi生sheng理li機ji能neng。也ye不bu宜yi在zai傍bang晚wan和he風feng雪xue天tian澆jiao水shui,避bi免mian造zao成cheng棚peng內nei地di溫wen難nan恢hui複fu、濕度過大,引起蔬菜病害大發生。
溫室蔬菜水分嚴重不足時,植株萎蔫和葉片焦枯;水(shui)分(fen)過(guo)多(duo)時(shi)土(tu)壤(rang)缺(que)氧(yang)引(yin)起(qi)根(gen)須(xu)腐(fu)爛(lan),地(di)上(shang)部(bu)分(fen)莖(jing)葉(ye)發(fa)黃(huang)甚(shen)至(zhi)死(si)亡(wang)。冬(dong)季(ji)溫(wen)室(shi)澆(jiao)水(shui)溫(wen)度(du)低(di),放(fang)風(feng)量(liang)小(xiao),水(shui)分(fen)消(xiao)耗(hao)少(shao),此(ci)時(shi)澆(jiao)水(shui)後(hou)濕(shi)度(du)變(bian)化(hua)較(jiao)大(da),而(er)且(qie)持(chi)續(xu)時(shi)間(jian)長(chang),因(yin)此(ci)需(xu)小(xiao)水(shui)勤(qin)澆(jiao)。當(dang)棚(peng)內(nei)溫(wen)度(du)比(bi)較(jiao)低(di)時(shi),澆(jiao)水(shui)次(ci)數(shu)盡(jin)量(liang)減(jian)少(shao),量(liang)也(ye)要(yao)小(xiao),切(qie)忌(ji)大(da)水(shui)漫(man)灌(guan),以(yi)防(fang)低(di)溫(wen)高(gao)濕(shi)導(dao)致(zhi)蔬(shu)菜(cai)漚(ou)根(gen)。
dongjiwenshijiaoshuiyiyongdixiajingshuizhijieguangai,ruguocaiyongjiaolengdedimianshuiguangai,zhizhugenxihuishouciji,jineryingxiangzhizhushengchang。pingshijiaoshuishiyaoqiushuiwenjinliangyudangshidiwenxiangjin。
澆jiao水shui當dang天tian,為wei盡jin快kuai恢hui複fu地di溫wen,要yao密mi閉bi溫wen室shi,使shi棚peng室shi內nei的de溫wen度du迅xun速su提ti高gao,以yi氣qi溫wen促cu地di溫wen升sheng高gao。地di溫wen升sheng高gao以yi後hou,再zai放fang風feng進jin行xing排pai濕shi,使shi溫wen度du降jiang低di到dao適shi宜yi範fan圍wei。
二、施(shi)肥(fei)一(yi)是(shi)有(you)機(ji)肥(fei)與(yu)無(wu)機(ji)肥(fei)相(xiang)結(jie)合(he)。即(ji)緩(huan)效(xiao)與(yu)速(su)效(xiao)相(xiang)結(jie)合(he)。不(bu)少(shao)農(nong)民(min)冬(dong)天(tian)衝(chong)施(shi)肥(fei)料(liao)還(hai)是(shi)施(shi)用(yong)了(le)不(bu)少(shao)化(hua)肥(fei),施(shi)用(yong)化(hua)肥(fei)除(chu)降(jiang)低(di)地(di)溫(wen)外(wai),如(ru)化(hua)肥(fei)以(yi)硝(xiao)銨(an)、尿(niao)素(su)等(deng)氮(dan)肥(fei)為(wei)主(zhu),短(duan)期(qi)內(nei)蔬(shu)菜(cai)長(chang)勢(shi)較(jiao)好(hao),但(dan)缺(que)乏(fa)長(chang)效(xiao)性(xing),植(zhi)株(zhu)容(rong)易(yi)早(zao)衰(shuai)。也(ye)有(you)些(xie)衝(chong)施(shi)肥(fei)以(yi)餅(bing)肥(fei)或(huo)磷(lin)酸(suan)二(er)銨(an)為(wei)主(zhu),效(xiao)果(guo)欠(qian)佳(jia),有(you)時(shi)還(hai)會(hui)造(zao)成(cheng)損(sun)失(shi),其(qi)主(zhu)要(yao)原(yuan)因(yin)是(shi)餅(bing)肥(fei)沒(mei)有(you)發(fa)酵(jiao),其(qi)發(fa)酵(jiao)需(xu)要(yao)一(yi)定(ding)的(de)時(shi)間(jian)。
ershizhuifeiyichongshifeiweizhu,xuanyongfeiliaoyiduoyuanfuhefeiweizhu,caiquchongshidebanfa,yifangmianjiejuebiaocenggenxixufeiwenti,lingyifangmianchongfeinengzengjiagenxishenchang,kuodagenxixishoufeiliaodemianji,shizhizhugenxixishoujinliangduodeyingyang。
三是大水與小水衝施相結合,不少菜農朋友無論苗期、結果期均以大水衝施肥,使得肥水過大,引起爛根、漚根。無論生物肥、有機肥、化肥都要看苗情用肥,按照科學的方式衝施。
sishishengwuyoujifeihehuafeixiangjiehe。shengwufeiliaozhonghanyouduozhongyouyijun,juyouhuohuaturang,tigaodiwendengzuoyong。yuwujihuafeipeiheshiyong,bujinnengbimiandanyiyongfeiliangdachanshengdefeihai,hainengzengjiaturangyoujizhi,zengqiangbutongchengfendeyingyangzuoyong,cujingenxifayu。
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