一、结构与特点普通玻璃温室保温、防寒性差,建筑材料来源不足,建筑与使用成本高,这是影响其大发展的主要原因。而生产、育苗兼用小型塑料薄膜温室则能较好地解决上述问题。其结构见示意图。跨度3.5—4.5米,其中有效面积2.5—3.5米;中柱高1.5—1.6米,材料用小木杆或水泥柱均可;前半园型塑料薄膜面宽3—4米,骨架材料用直径2—3厘米的竹杆或用高粱秸、棉槐条扎成把,南北向拱成半园型,骨架间距离0.7米左右;后墙高0.7—0.8米、宽0.5—0.6米,用“干打 First, the structure and characteristics Ordinary glass greenhouse insulation, cold is poor, lack of building materials, construction and use of high cost, which is the main reason affecting its great development. The production, nursery and small greenhouse plastic film can better solve the above problems. See the structure of the schematic. Span 3.5-4.5 meters, of which 2.5-3.5 meters effective area; 1.5-1.6 meters in the column, the material can be small wooden or cement column; the first half parked plastic film surface 3-4 meters wide, with a diameter of 2- 3 cm of bamboo or sorghum straw, cotton acacia bar into a tie, north-south arch into a semi-circular type, the distance between the skeleton of about 0.7 meters; 0.7-0.8 meters high after the wall, 0.5-0.6 meters wide, with "dry