菊花叶子发黄怎么办?
1、土壤偏碱
juhuaxifeiwo、toushuixingqiang、piansuanxingturang,phzhida7.5deturangjiyidaozhijuhuaxiabutuoyehuoquanzhuyepianfahuang。jiejuefangfa:jingchangjiaojingguofajiaodeximishuihuoyushui。
2、浇水太多
shuijiaodetaiduodaozhiturangjishuijiushi,touqixingchashenzhibufenxugenfulan,biaoxianchujuhuanenyeanhuangwuguangze,xinshaoweisuo。 jiejuefangfa:juhuajiaoshuiyipentuganzejiao,buganbujiao,jiaozejiaotouweiyuanze。xiajiqihouyanre,pentuyigan,yaochongfenjiaoshui,danzhongwubunengjiaoshui,zaochenjiaozushui,huanghunpentugankezaijiao1ci。yuhoucependaoshui。jiaoshuishifangzhinitujiandaoyepianshang。
3、浇水太少
juhuayouyuzhangqimeijiaotoushuihuotuoshui,xinyesuiyesezhengchang,danxiabuyepianjianxiangshangganhuangtuoluolaohua。 jiejuefangfa:juhuashengzhangqijianxuyaochongzujiaoshui,pentuganhoukezaijiaoyici,danzhuyizhongwutaiyangjiaomengshibunengjiaoshui。
4、施肥过多
juhuashifeiguoduoyehuizaochengyezifahuangxianxiang。jiejuefangfa:juhuashifeiyaozhangwobofeiduoshi,jianhualeihoukeyishaonong。zhuifeikeyongfushudoubing、xiangyouzha2fenjiaqingshui8fen,meige710tianshi1ci。xianleihou,keyongfeiliao1fenjia3fenshui,zaichanrenshaolianglinsuanerqingjiajinxingzhuishi。shihou,jishiyongqingshuichongquyepianshangdefeiye。
5、叶枯病危害
yekubingqinranshijuhuayezifahuangkuweideyigeyuanyin,zhuyaoweihaijuhuadehuaye。jiejuefangfa:meige15tianpen1ci500beidekeshixingdaisenanhuodaisenxin。
juhuashiyongtubijiaoguangdehuahui,buguanshijiajuhuoshitingyuandengqitadifang,juhuadebaisheguanshanghaishihenpubiandee,danjuhuaguanshangjiazhigaodixuyaozaiyanghushangzhuyi,juhuayezifahuanghuijiangdijuhuadeguanshangjiazhi,suoyiyishangdewugejuhuayezifahuangjiejuefangfadajiayaozhuyila。