夏季蔬菜管理在一定程度上,澆水直接決定著蔬菜的長勢、chanliangjipinzhi。xiajiwendugao,turanghezhizhuzhengtengshuifenkuai,yiganhan,yingxiangshucaishengchangbingrongyiyoufabingdu,danruojiaoshuibudang,yihuidaozhishenglixingbinghaidedafasheng。具體夏季澆水應注意以下四點:
不bu要yao中zhong午wu澆jiao水shui。有you些xie菜cai農nong認ren為wei,中zhong午wu溫wen度du最zui高gao,此ci時shi澆jiao水shui正zheng好hao給gei蔬shu菜cai降jiang溫wen消xiao暑shu。其qi實shi不bu然ran,中zhong午wu澆jiao水shui很hen容rong易yi導dao致zhi蔬shu菜cai根gen係xi遇yu冷leng水shui刺ci激ji後hou出chu現xian“炸”根現象,從而造成蔬菜大幅減產,因此在早晨10點以前進行,既能達到降溫效果,又不至於對蔬菜根係造成傷害。
不要大水漫灌。很多菜農認為夏季溫度高,大棚蔬菜如何選用農藥澆水時應大水漫灌,大行小行一起澆,這樣可起到降低氣溫、diwenhequebaoshucaishuifengongyingdezuoyong,liyushucaishengchang,raner,shubuzhi,dashuimanguantianjianyijishui。genxizaiwuyanghuanjingxiahuxishoudaoyizhi,rongyifashengougen,genxifulan,yepianbianhuang,yanzhongyingxiangguoshichanliang,shenzhidaozhizhengkezhizhusiwang,youqishipalaodetianjiao、番茄等作物。所以,即使在夏天,澆水量也不能過大。為避免大溝一側的根係缺水,最好大小行交替澆。
不要忽幹忽濕。茄果類、gualeishucaijieguoqi,huganhushiyilieguo。zheshiyinweiturangganhanqueshuishiguoshidepengdashoudaoyizhi,yidanjiaoshuiguoduo,guoshixunsuxishui,pengguosudujiakuai,youqishiguoroubufenxishuiliangda,guopishengchangsuduxiangduijiaoman,zheyanghenrongyifashenglieguo,zhezhongxianxiangzaifanqiehegualeizuowushangyouweimingxian。
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