jinri,shouguangshiluochengjiedaobushaocainongdalaidianhua,fanyingjinqitianjiaolaozuobuzhuguo,jishizuozhuguodetianjiaochangdeyefeichangxiao。suihou,jizheyingyaolaidaoluochengjiedaogaohuaicun,faxianhenduoyijingzuozhudejiaozihuazhenfeichangchang(長的花針能趕上椒子的直徑)。那麼究竟是什麼原因造成甜椒花針過長呢?記者谘詢有關專家,總結為以下幾個方麵的原因。
首(shou)先(xian)是(shi)近(jin)期(qi)夜(ye)溫(wen)高(gao),晝(zhou)夜(ye)溫(wen)差(cha)小(xiao)造(zao)成(cheng)花(hua)針(zhen)變(bian)長(chang)。記(ji)者(zhe)了(le)解(jie)到(dao),近(jin)期(qi)當(dang)地(di)很(hen)多(duo)菜(cai)農(nong)在(zai)下(xia)午(wu)四(si)點(dian)左(zuo)右(you)就(jiu)開(kai)始(shi)關(guan)閉(bi)了(le)放(fang)風(feng)口(kou),造(zao)成(cheng)棚(peng)內(nei)夜(ye)間(jian)溫(wen)度(du)在(zai)18℃左右,這麼高的夜溫易造成植株徒長、花芽分化不良,所以形成花針過長也就不足為奇了。因此菜農可以推遲關風口的時間,以此來拉大晝夜溫差,一般夜間溫度保持在13℃左右,晝夜溫差在10℃以上最為適宜。此外,為防植株旺長,可適當噴灑植物生長調節劑(如助壯素、矮壯素)等來調節植株長勢。
其次,缺硼也會造成花針變長。有關專家指出:zaihuayafenhuaqi,yejiushizhizhuxupengfeidelinjieqi,suoyizaiciqiyidingyaoshizupengfei。ruguozaiciqipengyuansuquefa,huidaozhiciruifenhuabuliang。youqishizaiqiwenjiaodishi,pengyuansuquefaduihuaqideyingxiangjiuhenmingxiandibiaoxianchuhuaxiao、花針長的現象。菜農朋友為防硼元素缺乏,可畝用硼砂一公斤,隨水衝到地裏,也可葉麵噴施硼砂600倍或速樂硼1200—1500倍。
另(ling)外(wai),水(shui)肥(fei)供(gong)應(ying)不(bu)足(zu)。由(you)於(yu)現(xian)在(zai)溫(wen)度(du)低(di),菜(cai)農(nong)為(wei)防(fang)止(zhi)澆(jiao)水(shui)施(shi)肥(fei)後(hou)地(di)溫(wen)降(jiang)低(di),影(ying)響(xiang)甜(tian)椒(jiao)根(gen)係(xi)的(de)生(sheng)長(chang),一(yi)般(ban)都(dou)會(hui)減(jian)少(shao)澆(jiao)水(shui)施(shi)肥(fei)次(ci)數(shu),導(dao)致(zhi)處(chu)於(yu)膨(peng)果(guo)期(qi)的(de)甜(tian)椒(jiao)水(shui)肥(fei)供(gong)應(ying)不(bu)足(zu),膨(peng)果(guo)速(su)度(du)慢(man),造(zao)成(cheng)了(le)甜(tian)椒(jiao)出(chu)現(xian)花(hua)針(zhen)過(guo)長(chang)的(de)現(xian)象(xiang)。因(yin)此(ci),記(ji)者(zhe)建(jian)議(yi):為防止地溫降低過大,菜農可采用澆小水衝施有機肥的方法,滿足甜椒膨果時所需的營養物質。
手機版




