今日針對去冬今春的(de)(de)(de)霧(wu)霾天氣(qi),我們(men)技(ji)術人員深入所包示范村,全(quan)面(mian)(mian)開展(zhan)設施(shi)蔬菜(cai)(cai)(cai)(cai)生(sheng)產情況調查,深入了解(jie)不(bu)利天氣(qi)下(xia)不(bu)同蔬菜(cai)(cai)(cai)(cai)種類的(de)(de)(de)受災現狀,全(quan)面(mian)(mian)了解(jie)農(nong)民應對災害(hai)性(xing)天氣(qi)的(de)(de)(de)成(cheng)功(gong)經驗和(he)有(you)效做法(fa),指導農(nong)民應對霧(wu)霾天氣(qi)的(de)(de)(de)一(yi)些(xie)管理措施(shi);一(yi)是(shi)加(jia)強(qiang)保(bao)溫(wen)(wen)補(bu)(bu)溫(wen)(wen)。增加(jia)外層草簾(lian)及薄膜(mo)的(de)(de)(de)層次,改善(shan)保(bao)溫(wen)(wen)效果;在(zai)棚(peng)內(nei)扣小(xiao)拱棚(peng);鋪(pu)設地膜(mo),提(ti)(ti)高地溫(wen)(wen),降(jiang)低棚(peng)內(nei)空氣(qi)濕度(du);必(bi)要(yao)(yao)(yao)時(shi)(shi)(shi),人工加(jia)溫(wen)(wen)。二是(shi)爭取(qu)光(guang)照。保(bao)持(chi)棚(peng)膜(mo)清潔、及時(shi)(shi)(shi)用抹(mo)布清擦(ca)棚(peng)膜(mo)上的(de)(de)(de)塵(chen)土,充分(fen)保(bao)持(chi)棚(peng)膜(mo)的(de)(de)(de)透光(guang)性(xing);只要(yao)(yao)(yao)揭簾(lian)后氣(qi)溫(wen)(wen)不(bu)下(xia)降(jiang),或下(xia)降(jiang)范圍在(zai)1~2℃以內(nei),都要(yao)(yao)(yao)適時(shi)(shi)(shi)揭簾(lian)讓蔬菜(cai)(cai)(cai)(cai)見光(guang);采用墻面(mian)(mian)掛反光(guang)幕、內(nei)墻和(he)立柱(zhu)表(biao)面(mian)(mian)涂成(cheng)白色等措施(shi),充分(fen)利用反射光(guang);通過整枝抹(mo)杈、摘除老葉等綜合(he)農(nong)業措施(shi),改善(shan)作物(wu)群體間光(guang)照條件;必(bi)要(yao)(yao)(yao)時(shi)(shi)(shi)人工補(bu)(bu)光(guang)。三是(shi)減(jian)少(shao)灌(guan)水(shui)。盡(jin)量(liang)減(jian)少(shao)澆水(shui)次數,如要(yao)(yao)(yao)灌(guan)溉,選(xuan)擇晴天的(de)(de)(de)上午進(jin)行(xing),且(qie)應小(xiao)水(shui)膜(mo)下(xia)暗灌(guan),防(fang)(fang)止大(da)水(shui)漫灌(guan),灌(guan)水(shui)后應放風降(jiang)濕。四(si)是(shi)減(jian)少(shao)營養消耗。瓜(gua)果類蔬菜(cai)(cai)(cai)(cai)要(yao)(yao)(yao)及時(shi)(shi)(shi)采摘,以免負擔過重,造成(cheng)落花落果。同時(shi)(shi)(shi),要(yao)(yao)(yao)噴施(shi)葉面(mian)(mian)肥,增強(qiang)植株(zhu)的(de)(de)(de)抗(kang)凍和(he)抗(kang)逆性(xing),可用蕓大(da)120、磷酸二氫鉀、白糖(tang)、硼砂(sha)等微肥混配后,均勻(yun)噴灑到植株(zhu)上,以保(bao)證健壯(zhuang)生(sheng)長(chang)。五是(shi)防(fang)(fang)止病(bing)(bing)害(hai)蔓延。加(jia)強(qiang)病(bing)(bing)害(hai)的(de)(de)(de)監測,提(ti)(ti)前(qian)用粉塵(chen)劑保(bao)護(hu),預(yu)防(fang)(fang)在(zai)先(xian),特別要(yao)(yao)(yao)注意灰霉病(bing)(bing)、霜霉病(bing)(bing)和(he)晚疫病(bing)(bing)的(de)(de)(de)發(fa)生(sheng)和(he)蔓延,一(yi)旦發(fa)病(bing)(bing),及時(shi)(shi)(shi)用煙霧(wu)劑治療,同時(shi)(shi)(shi)做好放風除濕工作,搞好設施(shi)小(xiao)氣(qi)候的(de)(de)(de)調控。
通過講解,是種(zhong)植戶(hu)真正掌握應對災害性天氣的一些(xie)管(guan)理措施,力爭把災害降低到(dao)最(zui)低程度,收到(dao)很好效果。













