近jin年nian來lai,冬dong春chun茬cha拱gong棚peng甜tian瓜gua育yu苗miao一yi般ban很hen少shao有you人ren建jian專zhuan門men的de冬dong暖nuan式shi育yu苗miao棚peng,而er大da都dou在zai種zhong甜tian瓜gua的de拱gong棚peng中zhong設she簡jian易yi的de育yu苗miao棚peng。這zhe種zhong育yu苗miao棚peng保bao溫wen效xiao果guo差cha,瓜gua農nong為wei提ti高gao育yu苗miao棚peng的de保bao溫wen性xing能neng往wang往wang覆fu蓋gai多duo層ceng薄bo膜mo,薄bo膜mo層ceng數shu常chang有you五wu六liu層ceng之zhi多duo。這樣育苗棚的保溫性能雖有所增強,但透光率和通風排濕的性能卻大大減弱了。有些瓜農為省錢常用舊薄膜覆蓋育苗棚,其棚內的透光率更是大打折扣,棚內甜瓜苗常因低溫、寡照、高濕的環境而生長不良,病害多發。那麼如何來解決這些問題呢?筆者建議:
weiquebaoyumiaopengbaowenhetouguangxiaoguo,dongchunchatianguayumiaopengjinliangbuyaojianzaigongpengnei,yingjianzaidongnuanshidapengneihuotedijianyigexiaoxingdongnuanshiyumiaopeng,zheyangjinengtigaobaowenxiaoguo,younengyinbomocengshudejianshaoerzengjiatouguanglv,yebupayinwendudiwufatongfengeryingxiangtongfengpaishi。
因條件所限必須在拱棚內設育苗棚時,須做到以下幾點:育苗棚覆蓋的薄膜必須用新膜。育苗棚薄膜覆蓋的層數最好不要超過3層,保溫效果達不到時可采用電暖風、電燈泡、暖nuan水shui袋dai等deng增zeng溫wen。在zai溫wen度du條tiao件jian允yun許xu的de情qing況kuang下xia,要yao加jia強qiang通tong風feng排pai濕shi,以yi降jiang低di棚peng內nei濕shi度du。育yu苗miao棚peng上shang覆fu蓋gai的de薄bo膜mo要yao勤qin擦ca拭shi,以yi增zeng加jia透tou光guang率lv,提ti高gao甜tian瓜gua苗miao的de光guang合he作zuo用yong。
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