chucaojichucaoshimuqianmiaopushengchanzhongzuichangyongdechucaofangfa，juyouxiaoguohao、chengbendidengtedian。danshiyouyumiaomudezhongleifanduo，shengzhangtexinggeyi，zaishiyongchucaojichucaoshi，xuyaozhuyiyixiawudafangmian：
一要注意药剂的选择
chucaojidepinzhonghenduo，youjingyechuliji、mieshengxingchucaojideng。youdeshiyongyuyaqianchucao，youdeshiyongyujingyeqichucao。yinci，yaogenjubutongdemiaomupinzhonghebutongshiqidezacaofenbiexuanyong。ruzhenyeshuzhongkangyaoxingqiang，kexuanyouchucaomi、gaicaonengheguoerdeng；kuoyeshuzhongkangyaoxingcha，kexuanyongdilean、pucaojingdeng。
二要注意用药的量
苗木对除草剂的耐药性是有一定的限度的，所以不能随意加大用量。另外，不同苗木的耐药性不同，应严格按产品说明使用。一般来说，针叶树种的用药量可以大些，阔叶树种的用药量宜小些。同一苗木品种对某种药剂的抗药性，会随着苗龄增加而提高，用药量可相应加大，如防除松、杉苗圃的禾本科杂草，可每亩用23.5%的果尔乳油50毫升单用，或23.5%的果尔乳油30毫升加50%乙草胺乳油l00毫升混用。若用于阔叶树种苗圃，用药量宜适当减少。
三要注意施药的方法
fulelingyijianguanghuifa，bixuxianpenshiyumiaoputurangbiaoceng，ranhouzaiyongchipafugai。lasuokezaibozhongzhihou，chumiaoqianshiyong。douer、jingwenshadekezaizacaoyoumiaoqishiyong，duimiaomubijiaoanquan。shiyongmieshengxingchucaojirucaoganlin、kewuzongdeng，shiyongshipentouyaojiabaohuzhao，zhinengzaixingjianpenwu，fangzhipenshidaomiaomulvsebuwei。shuzhongduichucaojijiaoweiminganshi，kecaiyongdutufa，yifangyaohai。
四要注意施药的时间
miaoqianqiyiyongdutufa；sushengqiduichucaojimingan，yaotebieshenyong；miaomuyinghuaqimiaomusuiyouyidingkangxing，dandabufenzacaoyijingchengshu，shiyaodezuoyongbuda。
wuyaozhuyishiyaoshidehuanjingtiaojian
miaoputurangwendugao、shiduda、shazhiturang，yaoxiaofanyingkuai，chucaoxiaoguohao，yongyaoliangkejianshao；turangshiduxiao、ganhan，jiegoujinmishi，yaoxiaofanyingman，chucaoxiaoguocha，yaoliangkedaxie。guangduiyumouxiechucaojiyingxiangshifenmingxian，rufulelingdeng，jianguangyifenjie，shiyutubiaoyihuifa，shiyongshiyingjishiyubiaocengtuhunban。dicaolong、ximajin、pucaojingdeng；guanghezuoyongyizhiji，xuyaozaiyouguangdeqingkuangxiacainengyizhizacaoguanghezuoyong，fahuichucaoxiaoguo。
