1. Brick wall solar greenhouse construction (figure 1-2) . For the city's representative greenhouse construction structure, the back wall of brick and stone (such as ordinary clay brick, hollow brick, sand brick, slag brick and foam concrete brick, etc.) materials, thickness of more than 37 cm, outside 10 cm insulation board and waterproof layer. The galvanized steel frame in the shed can be formed by assembling trusses, welded trusses, single-arch solid web, etc. . It is made of oval steel tubes, round steel tubes, cold-formed channel steel with rat race side or outer lipped side, etc. . The wall thickness is not less than 2.0 mm, the span shall not be less than 10 meters and the ratio of height to span shall not be less than 0.5. Equipped with quilt, shed film and winding equipment. The minimum temperature at night should not be lower than 6 ° C in winter and the service life should be over 20 years. The rear wall has the advantages of small space and 40-50% land use ratio, and the disadvantage of relatively high cost and slightly lower thermal insulation performance than the earth-wall greenhouse construction.
