Today, the utilization rate of glass greenhouse is gradually improving. With the wide application of greenhouse, what is the role of greenhouse suitable for crop growth?
1. greenhouse is the abbreviation of energy-saving solar greenhouse, also known as greenhouse, which is a unique type of greenhouse in northern China. This is an indoor unheated glass greenhouse, and even in cold seasons, we only rely on sunlight to maintain a certain temperature level to meet the needs of vegetable crops.
2. The greenhouse adopts simple facilities to fully utilize solar energy. Generally, vegetables are grown in cold regions in winter without heating, while the planting facilities for producing fresh vegetables in glass greenhouses have distinct Chinese characteristics.
3. The structure of glass greenhouse varies from place to place, and there are many classification methods. From the perspective of wall materials, there are mainly semi underground soil wall greenhouses, masonry greenhouses, and composite greenhouses according to the length of the rear roof. There are long back slope greenhouses and short back slope greenhouses according to the form of the front roof, as well as two fold, three fold, arch, and micro arch. According to structure, it is divided into bamboo wood structure, steel wood structure, reinforced concrete structure, steel structure, reinforced concrete structure, suspension structure, and hot-dip galvanized steel pipe prefabricated structure.
4. The front slope covers the insulation at night, with single slope plastic greenhouses with retaining walls on the east, west, and north sides, collectively known as glass greenhouses. It is a good insulation with low investment and energy conservation, and is very suitable for underdeveloped rural areas in China.
To sum up, the light transmittance of glass greenhouse is generally above 60% - 80%, and the temperature difference between indoor and outdoor can be maintained above 21-25 ℃. The greenhouse has a certain impact on crops, which can make crops grow healthily.
