Energy-efficient solar greenhouses vary in structure due to regional climate conditions, but they all follow a principle in design and construction that is to adapt to local climate conditions, maximize solar energy, and optimize lighting conditions; Save the solar energy that has been obtained and strengthen the insulation measures. The currently promoted energy-efficient plastic solar greenhouse adopts a single-slope structure, and its basic structural parameters, material selection, and construction standards are as follows. First, the structural parameters span: 6 meters to 7 meters ridge height: 3.1 meters -2.7 meters behind the wall height: 2 meters a 1.5 meters length: about 50 meters before the lighting roof shape and angle: double arc half The arch is rounded, and the average horizontal angle between the middle section and the ground is approximately 6.5 degrees from the local geographic latitude. The horizontal projection width of the backslope is about 1.5 meters above the ground and must be determined strictly according to local climatic conditions, especially light conditions. Second, the construction standards Back wall (1) Brick wall. The interior wall is made of 12cm or 24cm clay bricks with 10cm gaps filled with perlite, furnace ash, and other insulation materials to form a 50cm-70cm composite wall. (2) Outside the stone walls to prevent cold. The base of the stone wall is 50 centimeters thick and 40 centimeters in the upper part. The inner wall is vertical and the outer wall is inclined. Peel the soil outside the wall, the thickness is greater than the local maximum permafrost 30 cm -50 cm. (3) Earthing outside the wall. Hit the wall or grass mud wall, inside the brick wall support. The thickness of the wall exceeds the maximum permafrost layer of 30 cm -50 cm, but the minimum is not less than 80 cm. 2. Gables use earthen or brick walls. The thickness is equivalent to 2/3 of the local maximum permafrost thickness. 3. The elevation angle of the rear roof is about 10 degrees higher than the elevation angle of the sun at noon on the local "winter solstice" day. Materials should be based on heat-preserving and heat-insulating materials. When the thickness of the material is mainly straw and firewood, the total thickness of the bottom and outer cover should reach 2/3 to 4/5 of the local maximum permafrost thickness. . 4. The front lighting surface is double arched and semi-arched. The angle between the main lighting section and the ground is equal to or greater than the local geographic latitude minus 6.5 degrees. Anti-loading capacity 100 kg / square meter. The vertical height of 1 meter from the front foot of the greenhouse is 1.6-1.7 meters. There is no pillar or temporary pillar under the forward slope or in the full-penthouse. There is no air leakage at the covered slope. 5. The transparent cover material adopts a multifunctional composite film with heat preservation, anti-fog, dust-proof, anti-aging and slow light transmission attenuation. 6. The opaque covering material adopts a straw curtain with texture and heat preservation performance that adapts to local conditions.