白兰花叶子发黄的原因：
1、水分过多：bailanhuapentujiaoshuiguoduohuoguoshao，shiganshishideng，rouzhigenxishoubule，huizaochengchuxianhuangyedeng。
2、温度过高：bailanhuayezifahuangyuwenduyouhendaguanxi，wenduguogaomenreshiyehuichuxianyezifahuang。
3、光照过少：bailanhuaxiyang，yaoshiyangguangguoshao，yehuizaochengzhuzhishengzhangbuliang，yezifahuang。
4、黄化病：bailanhuafashenghuanghuabingyehuizaochengyezifahuangtuoluo，yanzhongshihuizhuzhisiwang。
5、根腐病：bailanhuafashenggenfubing，genxifulanfaheishi，yeziyehuidaozhiweihuangtuoluo。
白兰花叶子发黄解决方法：
1、jiaoshuiyaoshidang，pentuganhou，yicixingjiaoshuishishuiliangbuyiguoduo，yebunengzhangshijianchuyuganhanbujiaoshuizhuangtai。
2、wenduyaobaochipingwen，buguogaohuoguodi，5yi10℃zhijianzuiheshi，wendushenggao，huanjingmenreyaozhuyitongfengtouqi，bingjiaqiangshiduguanli。
3、bailanhuashihezaitingyuanhuojiajuyangtai、chuangtaidengdifangzhongzhi，xuyaochongzudeyangguang，danbunengbaoshai，xiajiyangguangmenglieyaozhuyizheyin。
4、bailanhuapentuyaoxuanyongweisuanxingturang，bunengshiyongjiaoduodepianjianxingwujifeihuoshui，chuxianhuanghuabingyaojishiyong0.2%deliusuanyatiejinxingyemianpenshi，meizhouyici，lianxupen3^-4ci，huoyongfanfeishuimeizhoupenshiyici，lianxupen3、4ci，kongzhibingqing。
5、genfubingzhuyaoshishuifenguoduozaocheng，pingshiyaodengdaopentubiaomianfabaishizaijiaoshui，bingjingchangsongtu。zaimeiyuyaohuoyushuiguoduoshi，yibandaowuyanxiahuoshineibiyu;zaishangpenshipendiyingduojiaxiesuiwapiandeng，shipaishuitongchang，bingjiangpenyongzhuangeqilai，jiakuaishuiliudesudu。
bailanhuayezifahuangshihenchangjiandewenti，zuizhuyaodehaishiyanghubuhelizaocheng，suoyixiangyaoyouyipenhuasejiebaiyouya，zhitiaoqingcuibilvdebailanhualaimeihuazijidehua，haidezaiyanghushangnuli。
