1、地表撒施尿素和碳酸氢铵尿素含氮量虽高，但施入土壤后要转化成铵态氮才能被农作物吸收利用。同时，尿素在转化时呈分子状态，不被土壤吸附，易随水土流失，使作物难以利用。尿素作追肥，应开沟条施并盖土。作叶面肥喷施，应掌握好施用浓度，喷施小麦、水稻、棉花、玉米，浓度以0.8%～1.0%为宜，蔬菜以0.3%～0.5%为佳。碳酸氢铵地表施用，容易挥发，而且挥发的氨气会熏伤作物的茎、叶，造成肥害。正确的方法应深施10厘米左右，施后立即覆土。
2、guolinsuangaizhijiebanzhong。guolinsuangaizhonghanyou3.5-5%deyoulisuan，fushixingqiang，ruguolinsuangaizhijiebanzhong，youqishibanzhonghouzhangshijiancunfang，henrongyiduizhongzichanshengfushizuoyong，jiangdizhongzifayalvhechumiaolv。yinci，yongguolinsuangaizuozhongfei、zuihaotiaoshihuoxueshizaibozhonggounei，bingqieyongtujiangfeiliaoyuzhongzigekai。
3、linsuaneransuishuisashi。linsuaneransuishuisashihou，henrongyizaochengqizhongdansudehuifasunshi，linsuyezhitingliuzaidibiao，burongyisongzhizuowudegenji。zuowujidebudaodanyoudebudaolin，linsuaneranbujiudengyubaishile。yinci，linsuaneranyinggaitichangjishi，ruguozuozhuifeiyingzaoshi，kaigoushenshi，shihoufutu，yibanyaoqiushifeigoushen10limizuoyou。
4、tanandibiaoqianshi，futubuyanmi，daozhifeiliaoliyonglvdi。yinci，shiyongtananyaoshenshifutubingjishijiaoshui，shianbeiturangchongfenxifu，yitigaofeixiao。shiyanbiaoming，tananshenshibijiaoshiketigaoliyonglv10-30%。
5、 niaosubiaotusashihoujiyuguanshui，shenzhiyongdashuimanguanzaochengniaosuliushi。yincishiyongniaosushi，yinggoushi、tiaoshihuoxueshi，shifeishenduyi7-10limiweiyi，ranhoulijifutugaiyan，bingzhuyishifeijunyun。zhuifeihouxiaji2-3tian，chunqiuji6-8tianhouzaiguanshui。
6、zhuishigaimeilinfei gaimeilinfeifeixiaohuanman，gongfeishijianduan，zuozhuifeishiyong，tebiezaizuowudeshengzhanghouqizhuishi，bujinliyonglvdierqiexiaoguocha。suoyi，gaimeilinfeiyingzuojifeibingyuyoujifeihunshi，huozuozhongfeishiyong。zheiyang，feifenzhujianxichugongnongzuowuliyong，feixiaozhang，youlizuowuwenjianshengzhangbuzaoshuai。
7、danshihanjiahuafei liusuanjia、lvhuajiachengruoshenglisuanxingfanying，shiruturanghoujializiyibeiturangjiaotideyanglizixishouguding，zuowunanyiliyong。suoyishiyongjiafeiyingyudanfei、linfeihunyong，youqishishandi、jibodihexinkaihuangdidengquelindikuai，gengyingyulinfeihunyong，cainengchongfenfahuijiafei、linfeidezuoyong。
8、xinfeiyulinfeihunshi liusuanxinyuguolinsuangaicunzaizheyanzhongde“jiekang”zuoyong，erzhehunheshiyonghuiyizhiliusuanxindefeixiao，shiqiyouxiaoxingjiangdi。suoyiyingjianglinfeizuojifei，xinfeizuomiaoqizhuifei，huoxinfeizuojifei，linfeizuomiaoqizhuifei，caiketigaofeixiao。
