突出防暑,進行遮陰降溫。7月有小暑、大暑兩個節氣,月平均溫度在30℃左右,是一年中氣溫最高的月份之一,酷暑難熬。由於天氣酷熱,加強遮陰通風降溫工作尤為重要,悶熱天氣可采用水簾、空調降溫,及時開啟換氣扇、微型電扇等,使蘭葉得以微風吹拂,促進空氣流通。同時還可經常向地麵灑水降溫,防止酷暑傷蘭。
謹慎澆水防爛芽。7月(yue)氣(qi)溫(wen)高(gao),澆(jiao)水(shui)一(yi)般(ban)不(bu)要(yao)用(yong)浸(jin)盆(pen)法(fa)和(he)淋(lin)水(shui)法(fa),應(ying)盡(jin)量(liang)減(jian)少(shao)噴(pen)水(shui)噴(pen)霧(wu),以(yi)免(mian)將(jiang)水(shui)灌(guan)入(ru)葉(ye)心(xin)造(zao)成(cheng)腐(fu)爛(lan)。在(zai)高(gao)溫(wen)季(ji)節(jie),盆(pen)土(tu)不(bu)可(ke)長(chang)期(qi)過(guo)濕(shi),以(yi)防(fang)引(yin)起(qi)根(gen)腐(fu)病(bing)、莖腐病、軟腐病和爛芽。
減少施肥。7月蘭花進入夏季休眠期,禁止根施有機肥或無機肥,可適當噴施蘭花專用葉麵肥,以補充養分,促使蘭苗生長旺盛,為來年發芽、開(kai)花(hua)打(da)下(xia)基(ji)礎(chu)。噴(pen)施(shi)時(shi)間(jian)宜(yi)在(zai)傍(bang)晚(wan)進(jin)行(xing),噴(pen)施(shi)濃(nong)度(du)要(yao)比(bi)說(shuo)明(ming)書(shu)推(tui)薦(jian)的(de)濃(nong)度(du)淡(dan)一(yi)些(xie),以(yi)防(fang)肥(fei)料(liao)積(ji)存(cun)葉(ye)麵(mian)後(hou),經(jing)高(gao)溫(wen)日(ri)曬(shai)引(yin)起(qi)肥(fei)害(hai)傷(shang)苗(miao)。第(di)二(er)天(tian)早(zao)上(shang)日(ri)出(chu)前(qian)可(ke)噴(pen)水(shui)洗(xi)葉(ye),但(dan)注(zhu)意(yi)要(yao)及(ji)時(shi)通(tong)風(feng)吹(chui)幹(gan),以(yi)免(mian)將(jiang)水(shui)灌(guan)入(ru)葉(ye)心(xin)造(zao)成(cheng)爛(lan)芽(ya)。
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加固蘭室,預防暴雨和台風。本月各地暴雨、台風等極端天氣頻發,要做好預防工作,加固蘭室和遮雨設施,以防狂風暴雨打翻蘭盆、吹折蘭葉。
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