- 规格:
- 825
- 规格:
- 832
When designing and constructing a plastic greenhouse, we must first solve the lighting problem of the plastic greenhouse and maximize the penetration of sunlight into the interior of the plastic greenhouse. Plastic greenhouses in northern my country are mainly used in winter, spring and autumn. In winter, the sun's altitude angle is low, with sunrise in the southeast and sunset in the northwest. Therefore, in order to maximize the use of sunlight in winter. The construction of plastic greenhouses usually adopts the orientation of north to south and extending from east to west. Practice has proved that in mid- and high-latitude areas north of northern latitudes, the outside temperature is very low in winter mornings. After the straw curtains are opened in the east greenhouse in the morning, the indoor temperature often drops significantly, which has little practical significance. However, in areas where the outside temperature is not very low in the morning, it is also feasible to orient the greenhouse to the east. In severe cold areas, it is better to orient the greenhouse construction to the west, which will help extend the light time in the afternoon and keep warm at night. But whether it's east or west. It is advisable to set the limit, and should not exceed the limit.
Advantages:
1: The surface of the scaffolding is smooth and the membrane is not easily damaged, extending the service life of the membrane.
Two: It is easy to transport and install. Through the bending machine, the height, radian, shoulder height and angle of the shed can be bent at will. Three: The rubber and plastic plugs at both ends of the scaffolding pipe are plugged and sealed with adhesive to completely cover the metal surface so that the underground part will never rust. Four: There is no need for pillars in the middle of the scaffolding, which greatly increases the farming area, saves labor, can be mechanically operated, and increases work efficiency.
Five: Low cost. Different types of greenhouses can be built according to the large and small spans of the sheds and the specifications of the steel pipes.