施shi肥fei時shi產chan生sheng的de肥fei害hai難nan以yi識shi別bie
，且qie有you時shi和he農nong藥yao藥yao害hai有you一yi些xie混hun淆xiao。因yin此ci
，區qu別bie不bu同tong情qing況kuang，識shi別bie常chang見jian肥fei害hai很hen有you必bi要yao
，下xia麵mian就jiu介jie紹shao兩liang類lei肥fei害hai類lei型xing和he識shi別bie方fang法fa。

燒傷型肥害。果園裏施用化肥，如果采用幹施法，單一施用尿素
、碳銨、硫酸銨，且不對水稀釋後施用，柑橘等果樹極易出現燒傷型肥害。結果往往造成橘樹的主枝、側ce枝zhi嚴yan重zhong爛lan皮pi，樹shu皮pi失shi綠lv變bian成cheng褐he色se，細xi小xiao枝zhi條tiao失shi水shui甚shen至zhi枯ku死si。有you的de橘ju樹shu從cong基ji枝zhi的de成cheng熟shu葉ye尖jian開kai始shi失shi水shui變bian白bai或huo黃huang化hua枯ku焦jiao，隨sui後hou迅xun速su脫tuo落luo，但dan枝zhi條tiao頂ding部bu新xin葉ye枯ku焦jiao在zai樹shu上shang不bu落luo下xia，有you的de果guo農nong誤wu認ren為wei是shi根gen腐fu病bing危wei害hai引yin起qi爛lan根gen死si樹shu。因yin此ci，柑gan橘ju等deng果guo園yuan施shi肥fei應ying注zhu意yi施shi用yong複fu合he肥fei與yu過guo磷lin酸suan鈣gai等deng，則ze很hen少shao發fa生sheng上shang述shu情qing況kuang

，施shi單dan質zhi化hua肥fei時shi
，應ying挖wa穴xue對dui水shui澆jiao施shi，如ru果guo在zai幹gan燥zao天tian氣qi下xia，平ping施shi化hua肥fei
，特te別bie是shi挖wa穴xue幹gan施shi時shi，施shi肥fei後hou久jiu晴qing遇yu雨yu

，肥fei害hai來lai得de更geng快kuai
、更嚴重。

duhaixingfeihai。youxiehuafeishijuyouduxingde，rushihuidan，youjiaoqinganhuagai，shiyizhongshenhuisefenzhuanghuoxilizhuangdedanfei，yeshiweiyijuyoufeishuirongxingtezhengdechixiaoxingdanfei

，chuyongzuofeiliaowai，haikeyongzuochucaoji
、殺菌劑、脫tuo葉ye劑ji及ji殺sha滅mie釘ding螺luo等deng。但dan石shi灰hui氮dan有you較jiao強qiang的de毒du性xing
，施shi入ru土tu壤rang後hou，需xu通tong過guo一yi係xi列lie的de轉zhuan化hua才cai能neng被bei作zuo物wu吸xi收shou

，但dan在zai轉zhuan化hua過guo程cheng中zhong會hui產chan生sheng一yi些xie有you毒du物wu質zhi毒du害hai作zuo物wu
，使shi其qi受shou害hai或huo死si亡wang。因yin此ci在zai使shi用yong時shi宜yi作zuo基ji肥fei，不bu宜yi作zuo追zhui肥fei或huo種zhong肥fei，並bing嚴yan格ge控kong製zhi施shi用yong量liang。對dui其qi敏min感gan的de作zuo物wu有you油you菜cai、馬鈴薯等，一般不宜施用。

lingwai，liezhihuafeizhongruguolinsuangaijiqihanguolinsuangaidefuhefei，youlisuanchaobiao，shiruturanghourongyizhuoshangyoumiao。xinxiandejiufeizhijieshiyong，qieyongliangyoudashi，feiliaozaifenjieguochengzhongchanshengdaliangyoujisuanhereliang，yishizuowugenbushoushang，erxingchengfeihai。