shuzhuangyuejishizhitongguorenweideyuanyijiqiao，jiangyuejiyangchengyouganyouguan、xingzhuangxiangshuyiyangdeduganshiqiaomuzhuangleixing，tayanxuleyuejiduohuadetexing。keshihenduoshuzhuangyuejizaizhihou，budanmeiyouyanxuyuejiduohuadetexing，shenzhiyanzhongdaolebukaihuadedibu。genjubizheduonianduishuzhuangyuejideguancha、lejieyumosuo，jiangqiyuanyinguinaweiyixiajidian。
原因一、光照不足、通风不良
dajiazhidao，yuejishiyizhongxiguangdeqiangyangxinghuahui，shuzhuangyuejiyebuliwai。ruguojiyuzhizhudeguangzhaobuzu、tongfengbulianghuoguodudezheyin，zeshuzhuangyuejizhitiaohuibiandexizhang、yepianbianbo、yingyangjileicha，zuizhonghuidaozhizhizhushengzhangbuliang、kaihuashaoerqiexiao、huaseandan、huaqijiaoduandeng。
原因二、营养不足或失衡
youyushuzhuangyuejihuajuyouyinianduocikaihuadetexing，guduiyingyangdeyaoqiuyexiangduiyaogaoyuqitahuahui。zaishuzhuangyuejidezhenggeshengzhangjijiezhong，yaoshidangduozhuijicifeiliao，jizaishuzhuangyuejimeicikaihuahouzhuiyicifei，rangyuejizhizhujinkuaihuifuzhangshi。zaizhuifeishiyaozhuyidanlinjiadebilidapei，bunengzhizhuishidanyidedanfeihuolin、jiafei，fouzehuiyinqizhizhuzhizhangzhiyehuobunengzhengchangyunleidengzhengzhuang。
原因三、缺少合理的修剪
youyuyuejidekaihuaxixingshizaiyinianshengzhidedingduanxingchenghuaya，suoyizaixiujianshiyaotongguoduanjielaizengjiazhitiaodeshuliang。danzhitiaobingfeiyueduoyuehao，zaishidangzengjiazhitiaoshuliangdetongshiyaodiaozhenghaozhizhudetongfeng、touguang。zheiyang，jikeyicushizhizhujishidizhuanrushengzhishengzhangzhuangtai，youkeyishidangjianqingbingchongdefasheng。zaikaihuashengzhangjijie，yibancaiquqingjianchuli，daodongjizaijinxinghuisuoduanjie、gengxin。duishuzhuangyuejizhizhugenbujizhuganshangdemengnieyaosuishichudiao，fouzehuiewaixiaohaojiaoduodeyangfen，zuizhongjianruozhizhudeshengzhangshieryingxiangzhizhuyunleikaihua。
原因四、病虫危害
youyubingchongderuqin，shuzhuangyuejizhizhudezhiyeshousun，guanghezuoyongdeyouxiaoyemianjijianshao，erzhishizhenggeshushibianruo。zhuyaobinghaiyoubaifenbing、heibanbingdeng，yibanyong50%duojunling800beiyehuo70%jiajituobujin600beiyepensafangzhi。zhuyaochonghaiyouqiangweisanjieyefeng、yuejizhangguanya、xiewenyeeyouchongdeng，keyong48%lesiben1000beiyehuo90%dibaichongjingti1000beiyefangzhi。
原因五、品种特性所致
shuzhuangyuejikaihuaduoshaohaiyoupinzhongtexingsuojueding，suoyiyingjinliangtiaoxuanduokaihuadepinzhong，rushuguanshifenghuayuejipinzhongzerongyiduokaihua。
原因六、后期不亲和
yibanshuzhuangyuejishijiajiepeiyuerchengde。gujiesuiyuzhenmuzhijiancunzaizheyidingdechayi，tebieshijiajiehouqibuqinhedepinzhong，shengzhangzhuangtaijiaocha，zuizhonghuiyingxiangzhizhukaihua，youdebukaihua，shenzhizhujiansiwang。suoyi，jinliangyaotiaoxuanqinhepinzhongjinxingpeiyu。
