塑料大棚的稳固性既决定于骨架的材质、薄膜质量、压膜线的牢固程度 ,也与大棚的长度比、棚面弧度、高跨比有密切关系。1　骨架的材质　建造大棚的材料有木、竹、钢筋、钢管。在山区及南方 ,木、竹材料丰富 ,而且造价低 ,风险小。但用这些材料建起的大棚稳固性较钢筋、钢管大棚 The stability of the plastic greenhouse is determined not only by the material of the skeleton, the quality of the film, the firmness of the film line, but also the length ratio of the shed, the curvature of the shed surface and the ratio of height to span. 1 skeleton material construction Greenhouses are made of wood, bamboo, steel, steel pipe. In the mountains and the South, wood, bamboo rich materials, and low cost, low risk. However, the stability of greenhouses built with these materials is better than that of steel bars and steel pipe