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(hou)2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:caiyongtuixingshuipingpensafa,jicongwenshideliduankaishi,caozuorenyuanzhanzaiguodaoshang,beixiangwenshibeiqiang,mianxiangnanbian,yibianduikongpensa,yibiantuixing,zhidaotuichumenkou,bamenguanshang。ruyouyuyao,kecongshangbufangfengkoubapenfenguanshenrushineijinxingpensa,zhidaobayufenpenwan。⑵大棚:caiyongzuoyouduikongbaidongpensafa,jicongbeiduankaishi,caozuorenyuanzhanzaiguodaoshangbaidongpenfenguanxiangzuoyouliangcepenfen,yibianpenyibiantuixing,zhidaotuichunanduandemenkou,bamenguanshang。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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