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作zuo用yong及ji使shi用yong對dui象xiang。波bo爾er多duo液ye宜yi在zai病bing菌jun侵qin入ru前qian使shi用yong，發fa病bing後hou使shi用yong藥yao效xiao明ming顯xian下xia降jiang，僅jin有you防fang止zhi病bing菌jun再zai侵qin染ran的de作zuo用yong。使shi用yong範fan圍wei廣guang，對dui真zhen菌jun引yin起qi的de霜shuang黴mei病bing、軟腐病、炭疽病、幼苗猝倒病等，有良好的防治效果，但對白粉病防效較差。
使shi用yong優you質zhi原yuan料liao。質zhi量liang好hao的de波bo爾er多duo液ye呈cheng天tian藍lan色se，主zhu要yao成cheng分fen是shi堿jian式shi硫liu酸suan銅tong。波bo爾er多duo液ye的de質zhi量liang好hao壞huai與yu原yuan料liao質zhi量liang關guan係xi很hen大da，市shi售shou的de硫liu酸suan銅tong粉fen一yi般ban能neng滿man足zu要yao求qiu，石shi灰hui必bi須xu選xuan用yong剛gang燒shao製zhi的de白bai色se塊kuai灰hui，雜za質zhi多duo或huo風feng化hua了le的de消xiao石shi灰hui不bu宜yi使shi用yong。
配pei製zhi要yao點dian。配pei製zhi波bo爾er多duo液ye時shi不bu能neng使shi用yong金jin屬shu容rong器qi，尤you其qi是shi鐵tie器qi。配pei製zhi時shi水shui溫wen不bu應ying超chao過guo氣qi溫wen。切qie忌ji將jiang硫liu酸suan銅tong與yu生sheng石shi灰hui同tong時shi放fang在zai一yi個ge容rong器qi中zhong加jia水shui。
波bo爾er多duo液ye在zai剛gang配pei好hao時shi懸xuan浮fu性xing很hen好hao，有you一yi定ding的de穩wen定ding性xing，但dan放fang置zhi過guo久jiu，硫liu酸suan銅tong與yu氫qing氧yang化hua鈣gai會hui發fa生sheng作zuo用yong生sheng成cheng硫liu酸suan鈣gai與yu氫qing氧yang化hua銅tong沉chen澱dian，從cong而er影ying響xiang效xiao果guo，故gu必bi須xu隨sui配pei隨sui用yong，不bu能neng久jiu存cun。
依樹種選擇配製比例。波爾多液是由硫酸銅、生石灰、shuipeizhiercheng。youxieguoshuduiliusuantonghuoshihuitebiemingan，rongyichanshengyaohai。duishihuimingandeguoshuyouputaodeng，yingcaiyongshihuibanliangshi。duiliusuantongmingandeyouli、柿等，使用時應采用石灰倍量式或多量式。桃、杏、李、meidengheguoleiguoshuduitonglizitebiemingan，yichanshengyaohai，shengchangqibunengshiyongboerduoye。duoshuguoshurulidengdeyouguoduitonglizimingan，rongyichanshengyaohai，ruyichanshengguoxiu。yinci，youguoqiyingbimianpenshiboerduoye，huogaiyongxintongboerduoye。
buyiduoyaohunyong。boerduoyeshujianxing，buyiyuyujianyifenjiedeyaojihunyong，yebunengyuduoshuyoujinongyaohunyong，yimianshixiao。boerduoyebunengyushiliuhejihekuangwuyourujitongshishiyong，zaipenshishiliuhejihou15天或噴施礦物油乳劑後30天才能噴波爾多液。
選擇適宜天氣噴藥。噴藥時陰天、濕度大或噴藥後遇雨，果樹易產生藥害，因此，應避免在陰天和高溫高濕天氣下噴施波爾多液。
