一、施藥器械與用量。施藥器械可采用豐收-5型或豐收-10型手搖噴粉器。要求噴口的風速在8米/秒以上,豐收-5型手搖柄的搖轉速度要達到每分鍾36轉,豐收-10型要達到每分鍾50轉,目的在於噴粉口能產生足夠強的風使藥粉均勻排出。排粉量調節在每分鍾噴粉200克左右,一般每畝用粉塵藥劑1公斤,處理時間為5分鍾。
二、噴pen粉fen的de最zui佳jia時shi間jian。噴pen粉fen的de最zui佳jia時shi間jian是shi早zao晨chen或huo傍bang晚wan,趁chen尚shang未wei揭jie棚peng或huo剛gang剛gang閉bi棚peng後hou進jin行xing,這zhe樣yang藥yao粉fen在zai作zuo物wu上shang的de沉chen積ji率lv較jiao高gao。晴qing天tian的de中zhong午wu應ying避bi免mian噴pen粉fen,陰yin天tian則ze任ren何he時shi間jian均jun可ke噴pen粉fen。噴pen粉fen後hou2小時左右即可打開通風。第一次噴藥在發病初期,根據病情每隔7-10天噴1次。注意噴粉前把棚室的通風口和門關閉,把棚室的塑料布蓋嚴,盡量達到密閉狀態,如果棚布僅有小塊破損則對粉塵無影響。
三、噴粉的技術要領。⑴溫室:采(cai)用(yong)退(tui)行(xing)水(shui)平(ping)噴(pen)撒(sa)法(fa),即(ji)從(cong)溫(wen)室(shi)的(de)裏(li)端(duan)開(kai)始(shi),操(cao)作(zuo)人(ren)員(yuan)站(zhan)在(zai)過(guo)道(dao)上(shang),背(bei)向(xiang)溫(wen)室(shi)北(bei)牆(qiang),麵(mian)向(xiang)南(nan)邊(bian),一(yi)邊(bian)對(dui)空(kong)噴(pen)撒(sa),一(yi)邊(bian)退(tui)行(xing),直(zhi)到(dao)退(tui)出(chu)門(men)口(kou),把(ba)門(men)關(guan)上(shang)。如(ru)有(you)餘(yu)藥(yao),可(ke)從(cong)上(shang)部(bu)放(fang)風(feng)口(kou)把(ba)噴(pen)粉(fen)管(guan)伸(shen)入(ru)室(shi)內(nei)進(jin)行(xing)噴(pen)撒(sa),直(zhi)到(dao)把(ba)餘(yu)粉(fen)噴(pen)完(wan)。⑵大棚:采cai用yong左zuo右you對dui空kong擺bai動dong噴pen撒sa法fa,即ji從cong北bei端duan開kai始shi,操cao作zuo人ren員yuan站zhan在zai過guo道dao上shang擺bai動dong噴pen粉fen管guan向xiang左zuo右you兩liang側ce噴pen粉fen,一yi邊bian噴pen一yi邊bian退tui行xing,直zhi到dao退tui出chu南nan端duan的de門men口kou,把ba門men關guan上shang。⑶中小拱棚:采用棚外噴撒法,即在棚外一側或兩側不同部分將棚揭開一部分,把噴粉管伸入棚內進行噴撒,噴管左右搖擺。
四、penfendezhuyishixiang。fenchenfashiyaoyidingyaozhuyipenfenjiqiao,penfenshipenkouyaochaoshang,bafenjijunyundipendaopengshidekongzhong,buyaobapenfenguanduizhunzhizhuzhuxingpensa,fouzezheluobujunyun。tongshi,caozuoshiyidingyaozunshounongyaoanquancaozuoguicheng,yaoqiuchuanchangxiugongzuofu,peidaifengjing、口罩及防護帽。施藥後要及時走出棚室,並隨即用清水洗臉、洗手和漱口。
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