金边瑞香叶子发黄:
1、土壤偏碱
penzaijinbianruixiangyiyongfeiwoshusong、fuhanfuzhizhidaisuanxingdefuyetu,ruguoxuanyongdeturangjianxingqiang,huizaochengjinbianruixiangdeyezifahuangdiaoluo。jiejuefangfa:genghuanpentuturanghuoshijialiusuanyatierongyebaozhengturangsuanxing。
2、阳光过烈
jinbianruixiangpayanxiagaowenlieri,xiajiyizhiyuyinliangtoufengdehuajiashang,huozhiyuwuyangguangzhishededifang,yangguangzhaosheguomenghuodaozhiyezifahuang。jiejuefangfa:bajinbianruixiangbaifangzaisanguangchongzudedifangyangzhi。
3、温度过低
jinbianruixiangkanghannenglijiaocha,ruguowenduguodiyezijiuhuifahuangdiaoluo,zhuzhiyeshoudongsunhai。jiejuefangfa:jinbianruixiangpenzaiyaozaishuangjiangqianyirushinei,baochishiwenbudiyu5℃。
4、水分过多
jinbianruixiangxingxiyinerelao,penzaiyaokongzhijiaoshuiliang,pentuguoshiyichuxiangenfubinghejingfubing,zaochengyezifahuang,zhuzhisiwang。jiejuefangfa:yaoyongganjingxiaoguodudepeiyangtuzhongxinshangpen,zhiyutongfengyinliangchuyanghu,binghelijiaoshui。
5、施肥不当
jinbianruixiangxifei,yifushudeyoujifeiweiyi,yongliangyishaobuyiduo,qinfeishaoshi,ruguoshifeiguoduohuizaochengfeihai,yinfajinbianruixiangyezifahuang。jiejuefangfa:jinbianruixiangshifeiyaoheli,keshiyongfushudedoubingshuihuofushudeji、yafenshui,shiqianyaoduishuixishi。
6、病害侵染
jinbianruixiangyanghubudangrongyifashengbinghai,kuweibinghuidaozhijinbianruixiangyezifahuangbianheganku。jiejuefangfa:fabingchuqi,yongduojunlinghuobenlaite800~1000beiyejiaoguangenbu,meizhouyici,lianguan5~6ci,xiaoguomingxian。
jinbianruixiangshengfangshihuasexianyan,xiangqimiren,penzaizhongzhibijiaojuyouguanshangjiazhi,danyaozhuyiyanghu,yimianchuxiandaozhiyezifahuangdiaoluodeqingkuang。