近几年来,住我国北方蔬菜塑料大棚发展较快,但由于没有标准的大棚结构设计,棚形繁杂,造成建棚材料规格品种多,用钢材量大,强度低,经不住较大的风雪。同时,由于棚架两肩低,棚内有梁柱,不 In recent years, living in northern China plastic greenhouses developed rapidly, but because there is no standard greenhouses structure design shedding complex, resulting in a variety of specifications and building materials shed, with a large amount of steel, low strength, could not stand a larger wind snow. At the same time, due to the scaffolding on both shoulders, beams and columns in the shed are not available