當外界氣溫接近花卉生存的上限溫度時
，植株就會生長不良、發fa育yu遲chi緩huan，甚shen至zhi可ke能neng在zai短duan時shi間jian內nei死si亡wang。究jiu其qi原yuan因yin
，高gao溫wen使shi花hua卉hui呼hu吸xi作zuo用yong加jia強qiang，光guang合he作zuo用yong減jian弱ruo，使shi養yang分fen積ji累lei和he消xiao耗hao之zhi間jian的de平ping衡heng失shi調tiao，植zhi株zhu得de不bu到dao充chong足zu的de營ying養yang而er發fa育yu不bu良liang，甚shen至zhi停ting止zhi生sheng長chang；45℃yishangdechaogaowen，keshihuahuixibaoneidedanbaizhiyinshoureerninggu，daozhizhizhusiwang。gaowenhuishiguanyeleihuahuideyepiantuilv，shiguanhualeihuahuidehuaqisuoduanhuohuabanjiaozhuo。gaowenxiabingchonghuodongpinfan
，duihuahuideweihaiyeyanzhong。wogenjuduonianyanghuashijian，xianjianghuamuyufanggaowende“四字訣”簡述如下：

遮強光

對既怕高溫又怕強光的花卉，如吊鍾海棠
、仙客來
、蘭(lan)花(hua)等(deng)
，在(zai)夏(xia)季(ji)高(gao)溫(wen)時(shi)節(jie)
，適(shi)當(dang)遮(zhe)蔭(yin)或(huo)放(fang)在(zai)蔭(yin)棚(peng)下(xia)養(yang)護(hu)，即(ji)可(ke)為(wei)它(ta)們(men)越(yue)夏(xia)避(bi)暑(shu)防(fang)高(gao)溫(wen)的(de)正(zheng)常(chang)生(sheng)長(chang)發(fa)育(yu)提(ti)供(gong)必(bi)要(yao)的(de)涼(liang)爽(shuang)環(huan)境(jing)。不(bu)具(ju)備(bei)搭(da)涼(liang)棚(peng)或(huo)無(wu)蔭(yin)棚(peng)的(de)，也(ye)可(ke)采(cai)用(yong)白(bai)天(tian)移(yi)入(ru)室(shi)內(nei)遮(zhe)蔭(yin)降(jiang)溫(wen)，夜(ye)晚(wan)移(yi)到(dao)室(shi)外(wai)接(jie)露(lu)水(shui)通(tong)風(feng)的(de)辦(ban)法(fa)。

灑水降溫

xiangfangzhipenhuadechangdisizhousashuiheyemianpenshui，kezengjiashidu，youqidaojiangdiwendudezuoyong。jianshaoyemianzhengfa
，zengqianghuahuikangganhannengli，weihuahuichuangzaoliangshuangshirundeyouliangxiaohuanjing。sashuishi，qiebukezaiyanredezhongwuhuoxiangyijingkaishiweiniandepenhuajiaolengshui，fouze
，rongyiyinqi“傷風”，並加速其萎蔫或死亡。

及時避雨

xiajiyuduoqieda，chixushijianyouchang。jiangyuyinqidejizhoujiangwenyisunshanggenmao。yuhoupenneijishui

，shigendehuxizuoyongshouzu，yiyinqilangen，rouzhigenleihuahuilangengengweiyanzhong。fanshengxiachuyuxuruohuobanxiumianzhuangtaidehuahui，junyingfangzaibiyuchu，jishishiludihuahui
，yeyingshidangzhegai；雨後的積水應及時排除。

通風要好

花卉的呼吸和光合作用都必須有充足的新鮮空氣存在，通風還能降低有害
、youduqitinongdu。tongfengbulianghuishihuxizuoyongshouzu，yingxianghuahuidezhengchangshengchang
，shenzhiyinqihuahuizhujiansiwang。jiaqiangchangditongfeng，shidangjiangdiludihuapudezhongzhimidu，helizhengxingxiujian，dounengdadaotongfenglianghaodexiaoguo。