1.加jia強qiang通tong風feng,降jiang低di棚peng溫wen。菜cai農nong在zai種zhong植zhi越yue夏xia蔬shu菜cai時shi,為wei了le避bi免mian棚peng內nei蔬shu菜cai出chu現xian高gao溫wen障zhang礙ai,要yao注zhu意yi將jiang大da棚peng的de上shang下xia放fang風feng口kou全quan部bu打da開kai,讓rang棚peng外wai的de冷leng空kong氣qi進jin入ru棚peng內nei後hou,與yu棚peng內nei的de熱re空kong氣qi形xing成cheng對dui流liu,以yi加jia速su熱re空kong氣qi的de排pai出chu,從cong而er有you利li於yu棚peng內nei溫wen度du的de降jiang低di。需xu要yao提ti醒xing菜cai農nong注zhu意yi的de是shi,在zai放fang風feng時shi,要yao在zai放fang風feng口kou的de下xia方fang設she置zhi擋dang風feng膜mo,以yi防fang冷leng風feng直zhi吹chui到dao蔬shu菜cai的de果guo麵mian上shang,導dao致zhi果guo實shi出chu現xian皴cun皮pi、裂口等。
2.shiyongzheyangwangjiangwen。dangtongguofangfengfangfahaibunengjiangpengneiwendukongzhizaishiyishucaishengchangdeyaoqiufanweizhineishi,cainongzuihaoshiyongzheyangwangzheyangjiangwen。cainongyingzaishangwupengneiwendujiejinshiyishucaishengchangdezuigaowendushijiangzheyangwangfangxia,zaixiawupengneiwendudiyushiyishucaishengchangdezuigaowendushijiangzheyangwangjuanqijike,danshiyaozhuyizaijiangzheyangwangfangxiashibunengdangzhufangfengkou。zaixuangouzheyangwangshi,cainongkeyixuangouzheguanglvzai60%左右的,因為這種遮陽網即能起到遮光降溫,預防日灼果的作用,又能讓部分光線照射到大棚內部,有利於蔬菜葉片光合作用的提高。
3.中(zhong)午(wu)噴(pen)霧(wu)降(jiang)溫(wen)。在(zai)夏(xia)季(ji)中(zhong)午(wu)時(shi),因(yin)為(wei)棚(peng)內(nei)溫(wen)度(du)較(jiao)高(gao),葉(ye)片(pian)蒸(zheng)發(fa)量(liang)大(da),根(gen)係(xi)吸(xi)收(shou)的(de)水(shui)分(fen)不(bu)能(neng)滿(man)足(zu)蔬(shu)菜(cai)蒸(zheng)騰(teng)作(zuo)用(yong)的(de)需(xu)要(yao),而(er)使(shi)西(xi)紅(hong)柿(shi)葉(ye)片(pian)出(chu)現(xian)上(shang)卷(juan)現(xian)象(xiang)。菜(cai)農(nong)可(ke)以(yi)在(zai)棚(peng)內(nei)安(an)裝(zhuang)微(wei)噴(pen)頭(tou)噴(pen)霧(wu)的(de)方(fang)式(shi)來(lai)降(jiang)低(di)棚(peng)溫(wen),這(zhe)樣(yang)做(zuo)還(hai)能(neng)起(qi)到(dao)增(zeng)加(jia)棚(peng)內(nei)空(kong)氣(qi)濕(shi)度(du),預(yu)防(fang)蔬(shu)菜(cai)花(hua)柱(zhu)柱(zhu)頭(tou)幹(gan)燥(zao),促(cu)進(jin)授(shou)粉(fen),預(yu)防(fang)蔬(shu)菜(cai)落(luo)花(hua)落(luo)果(guo)的(de)作(zuo)用(yong)。
4.菜農還可像棚內蔬菜葉片上噴灑甲殼素、氨基酸、海藻酸等葉麵肥的方法,促進蔬菜健壯生長,提高其對高溫的抗逆性。
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