桂花树缺铁病症状
tieshiguihuashushengzhangfayusuoxudeyizhongweiliangyuansu。guihuahuanshangquetiebingshi，huishouxianyingxiangyelvsudexingcheng，youqishiyouyedeyemaizhijianrongyibiaoxianshilvxianxiang。dangqingduquetieshi，yemaifujinbaochilvse，erliyemaijiaoyuanchudebuweikaishifanhuang。yanzhongshi，youyehelaoyedoubianweihuangbaiseshenzhichuxianhuanghesedehuaisibandian，cishideguihuashudikanglijianruo，changbeiyixieruojishengjunqinhai，zaochengzaoqiluoye。fanshihuanshangquetiebingdeguihuashu，yibandoubunengkaihua。
桂花树缺铁病的防治方法
该病的防治主要是通过使用药剂来改善土壤的性质。操作方法为：在新梢生长期，每月向叶面喷洒1次0.2%-0.5%的硫酸亚铁溶液,此方法见效快但不能持久。有些公园将0.1%的硫酸亚铁溶液装在盐水瓶中，倒置于树干上，以给病人打点滴的方式为其输送铁元素，此方法效果好，但操作麻烦。
目前最新的技术是在土壤中施用稳定性较高的蟹合铁Fe-EDTA（即乙二胺四乙酸合铁），每株用量20~40克，收效快，而且持久。
ciwaixuzaichunjiganhanshi，zhuyiguanshuiyajian。diwadiyaojishipaichuyanshui，yijianshaoturanghanyanliang。zengshiyoujifeiliao，shuxiajianzuolvfei，zengjiaturangzhongdefuzhizhi，gailiangturangjiegoujilihuaxingzhi，duifangzhihejianqingbenbingdefashengdouyouyidingdexiaoguo。
muqian，bilixiangdequetiejiaozhengcuoshishixuanzeshiyidezhenmupinzhong，huozhejinxingzhugankaojiehuogenjie，yigaihuanzhenmupinzhong。
