由於我國幅員遼闊,地形複雜,所以各地氣候差異很大,形成了氣候類型複雜多樣的特點。因此,我們要正確判斷好春季來臨時間:從地理位置來說,華北地區的春季一般在4至5月,華東地區在3至4月;從節氣上說,立春到穀雨都屬於春季。此外,我們也可以說連續五天(也就是一候)最高氣溫達到或超過10℃就是春天了。
很多人看到春天來了,植物蘇醒了,便開始對其進行正常養護。其實,冬季剛過,早晚溫差很大,有時夜間溫度還會低於0℃,做zuo好hao防fang凍dong工gong作zuo仍reng十shi分fen關guan鍵jian。最zui好hao不bu要yao長chang時shi間jian通tong風feng,更geng不bu能neng把ba植zhi株zhu放fang在zai空kong氣qi對dui流liu處chu。筆bi者zhe曾zeng參can觀guan過guo一yi些xie生sheng產chan多duo肉rou植zhi物wu的de大da型xing企qi業ye,春chun季ji,在zai其qi溫wen室shi中zhong的de種zhong植zhi槽cao上shang,往wang往wang還hai會hui覆fu蓋gai一yi層ceng塑su料liao薄bo膜mo,隻zhi在zai中zhong午wu時shi打da開kai一yi會hui。這zhe樣yang栽zai培pei的de植zhi物wu個ge體ti飽bao滿man,體ti色se鮮xian豔yan。而er對dui於yu中zhong小xiao企qi業ye而er言yan,隻zhi要yao保bao證zheng夜ye間jian溫wen度du不bu低di於yu5℃,jikeshidaduoshupinzhonganranwuyang。youjiawentiaojiandezaipeichangsuonashizaihaobuguole,wujiawentiaojiandeyaofangzhiwenduturanxiajiang,kezaiqiwenzhoujiangqianzuohaobaonuangongzuo。
一般來說,附生類的品種如曇花等較大多數陸生類品種更經不起 "春凍";對於大多數番杏科的植物,如肉錐花、生石花和一些景天科的"冬型"種等,最好將溫度控製在7℃yishang。suizheqiwendehuisheng,guangzhaoshijianyejiangxianzhezengjia,daduoshuduojianghuahuizaizheduanshijianbunengshaoguang,youqishichunjikaihuadepinzhong。danmouxiepinzhongduiguangzhaoquefeichangmingan,rushierjuanshuzhiwu,jiubuxuyaochangshijiandeqiangguangzhao。zaishuifengongyingshang,yingsuizhewendudeshenggaozhujianjiadajiaoshuiliang,zuihaobuyaozhijiejiaozaizhizhushang,duiyuyixieyourongmaodepinzhonggengshiruci。jiandandishuo,weijinrushengchangqideyaozhuoqingjiaoshui,zaishengchangqineideyaobaochichongzudeshuifen。zaishifeihuanjieshang,chunjidezhuifeiyidanfeiweizhu,peihelinjiafei,bofeiqinshi。zuihaoshidengdaoqiwenwendinghouzaishi,duiyuchangjiangxiayoudiqu,daosiyueqianhou(也就是清明、穀雨左右)再施肥,往往能收到立竿見影的效果。
多漿花卉的"出棚"時間應控製在四月以後,華北地區更晚一些,過早"出棚"的(de)後(hou)果(guo)往(wang)往(wang)是(shi)致(zhi)命(ming)的(de)。繁(fan)殖(zhi)方(fang)麵(mian),在(zai)春(chun)末(mo)進(jin)行(xing)葉(ye)插(cha)的(de)多(duo)是(shi)一(yi)些(xie)蓮(lian)花(hua)掌(zhang)屬(shu)植(zhi)物(wu),莖(jing)插(cha)也(ye)可(ke)以(yi)。春(chun)季(ji)一(yi)般(ban)不(bu)提(ti)倡(chang)嫁(jia)接(jie)。如(ru)果(guo)播(bo)種(zhong)繁(fan)殖(zhi),仙(xian)人(ren)掌(zhang)科(ke)的(de)品(pin)種(zhong)可(ke)以(yi)在(zai)此(ci)時(shi)進(jin)行(xing),而(er)肉(rou)質(zhi)程(cheng)度(du)高(gao)的(de)品(pin)種(zhong)則(ze)不(bu)宜(yi)進(jin)行(xing),以(yi)避(bi)免(mian)夏(xia)季(ji)的(de)高(gao)溫(wen)。總(zong)的(de)來(lai)說(shuo),春(chun)季(ji)養(yang)護(hu)要(yao)做(zuo)到(dao):酌情澆水,保證光照,慎重施肥,防止"春凍".
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