在西宁市郊区两万多亩菜地里,覆盖着许多塑料大棚,最引人注目的是东郊公社联合大队建成的一座面积达31.5亩的大型蔬菜塑料大棚。这是我省目前最大的塑料大棚。高度达3.9米,由十个空心棚联拱而成。棚宽140 In the suburbs of Xining suburbs of more than twenty acres of vegetable fields, covered with many plastic sheds, the most striking is the eastern suburbs commune formed a large area of ​​31.5 acres of large vegetable plastic shed. This is the largest plastic shed in our province. Height of 3.9 meters, made of ten hollow shed arch. Shed width 140