1. In order to facilitate the management work such as ventilation, the ceiling film and the skirt film of the greenhouse must be covered separately. Usually, three-layer film is used, that is, one ceiling film and two skirt film on the left and right sides. The width ceiling film is 7.5 ～ 8.0 meters, and the width of the skirt film is 1.2 meters. First install the skirt films on both sides and clamp with the slot, then cover the top film, the two ends are clamped with spring clamping slots, and press the film line (belt) between arches, pressing on the top the junction of the film and the skirt film should overlap 20 to 30 cm. Press the top film on the outside of the skirt film. Both sides of the top film can be equipped with rocking rods to facilitate ventilation of the top film. The ground part of the skirt film should be sealed with mud. When the greenhouse is covered, should choose windless weather to avoid the wind blowing the cover film or tearing the cover film, and pressing the film strip after the cover.

2. When the greenhouse is ventilated, first lift the edge of the top film upward, and then lower the skirt film when the temperature rises again. When covering the film, clamp or fasten the skirt film first, and then put down the top film. Lifting and cover film is in the reverse order.

3. After the greenhouse is built, dig deep trenches around the greenhouse to reduce the groundwater level, which is good for the growth of vegetables in the greenhouse.