The glass greenhouse is a necessary construction for many fruit and vegetable growers today, which can greatly improve the convenience of winter planting. The heat preservation of the glass greenhouse is very important. To improve the heat preservation performance of the glass greenhouse, all parts of the greenhouse must be tight. When constructing the greenhouse, the following measures are mainly taken.
1. The back wall and back slope of the greenhouse are the main parts of the cold wind, and the insulation quality has a great influence on the temperature in the greenhouse. The thickness of the wall is 50-60 cm, and the soil is 80-100 cm outside the wall; it is best to build a hollow wall, and a wind barrier can also be placed outside the back wall of the greenhouse to reduce the wind.
2. Front slope insulation The front slope of the greenhouse is the main source of greenhouse heat energy during the day, and it is also the main part of the through-flow heat release. The front slope is covered with paper quilt and grass thatch at night; some are covered with double-layer grass thatch and covered with cotton quilt.
3. Set up a cold-proof ditch outside the front window of the greenhouse (10 cm from the front window) to prevent the indoor soil from transferring heat to the outside. The cold-proof ditch is 30-40 cm deep and 30 cm wide. The ditch is filled with slag, messy grass, horse manure, and rice husk. The top of the ditch is tightly covered, which can effectively prevent the loss of ground temperature.
