保溫拱棚
拱(gong)(gong)棚(peng)(peng)是頂部呈弧形(xing)、上面覆(fu)蓋(gai)塑料膜的(de)(de)棚(peng)(peng),目前主(zhu)要(yao)采用(yong)全鋼架或(huo)半鋼架結構(gou)的(de)(de)現代拱(gong)(gong)棚(peng)(peng)漸漸取(qu)代了竹(zhu)竿(gan)拱(gong)(gong)棚(peng)(peng)。相較竹(zhu)竿(gan)拱(gong)(gong)棚(peng)(peng),其具有使用(yong)壽(shou)命長、維(wei)護簡單、抗風強(qiang)的(de)(de)優勢,適(shi)合我國南(nan)方地區以(yi)及北方春(chun)、夏、秋季(ji)節的(de)(de)種植(zhi)以(yi)及養殖棚(peng)(peng)使用(yong),拱(gong)(gong)棚(peng)(peng)相對于(yu)暖(nuan)棚(peng)(peng)而言保溫(wen)性能稍(shao)低,可在(zai)棚(peng)(peng)內加設二膜或(huo)三膜,以(yi)增加夜間...