河東區恒豐塑料制品廠

夏季多(duo)雨(yu)(yu)(yu)(yu)，雨(yu)(yu)(yu)(yu)季的(de)到(dao)來對于(yu)農(nong)(nong)(nong)(nong)業(ye)生(sheng)產有利也(ye)有弊(bi)。充足的(de)雨(yu)(yu)(yu)(yu)水使農(nong)(nong)(nong)(nong)作物(wu)的(de)到(dao)充分的(de)滋養，對于(yu)大(da)棚(peng)農(nong)(nong)(nong)(nong)膜(mo)來說，雨(yu)(yu)(yu)(yu)水容易從大(da)棚(peng)農(nong)(nong)(nong)(nong)膜(mo)的(de)周邊灌入(ru)，導致(zhi)蔬菜的(de)一些病(bing)蟲(chong)害的(de)發(fa)生(sheng)。所(suo)(suo)以(yi)(yi)有些菜農(nong)(nong)(nong)(nong)在下雨(yu)(yu)(yu)(yu)的(de)時候(hou)不揭膜(mo)放(fang)風(feng)(feng)，這樣也(ye)是(shi)(shi)避(bi)免雨(yu)(yu)(yu)(yu)水灌入(ru)大(da)棚(peng)農(nong)(nong)(nong)(nong)膜(mo)的(de)一種好(hao)的(de)方法(fa)，但是(shi)(shi)這樣一來，棚(peng)里(li)的(de)熱(re)氣和(he)濕(shi)氣也(ye)就無(wu)法(fa)散出，這樣也(ye)是(shi)(shi)對農(nong)(nong)(nong)(nong)作物(wu)有害的(de)。所(suo)(suo)以(yi)(yi)，僅僅靠頂部放(fang)小風(feng)(feng)降溫則遠(yuan)(yuan)遠(yuan)(yuan)不夠。