How to choose the type and material of the greenhouse?

For greenhouses, there are three types of covering materials: film, sunlight board, and glass. The types of greenhouses are: cold sheds, warm sheds, and multi-span greenhouses.

Multi-span greenhouses are divided into arched and entwined types. If cold or warm sheds are used, thin films are generally used. And what are cold sheds and warm sheds, and what is the difference between them?

The cold shed refers to the plastic shed, with only one layer of plastic film. Thin film greenhouses are commonly known as cold sheds, which are simple and practical protective cultivation facilities. Because of their easy construction, convenient use and low investment, with the development of the plastic industry, they have been widely adopted by countries all over the world. Use bamboo, wood, steel and other materials, and cover with plastic film, to build an arched shed for cultivating vegetables, which can improve the supply of vegetables earlier or later, increase the yield per unit area, help prevent natural disasters, and enable the northern region to supply in the off-season in early spring and late autumn. Fresh and tender vegetables.

The thin-film greenhouse makes full use of solar energy, has a certain heat preservation effect, and can adjust the temperature and humidity in the shed by rolling the film. Therefore, plastic greenhouses in northern my country mainly play the role of heat preservation cultivation in advance of spring and postponement of autumn. Generally, spring can be advanced 30-35 days, and autumn can be delayed 20-25 days, but overwintering cultivation is not possible; in my country In the southern region, plastic greenhouses can be used for heat preservation and overwintering cultivation of vegetables and flowers in winter and spring, and can also be replaced with shading nets for shade cooling, rain, wind, and hail prevention in summer and autumn.

The solar greenhouse is the abbreviation of energy-saving solar greenhouse, also known as the warm shed. It consists of two side gables, a maintenance rear wall, a supporting frame and covering materials. It is a type of greenhouse in northern my country. It is a greenhouse that is not heated indoors. The rear wall absorbs solar energy to achieve heat storage and release, and maintain a certain indoor temperature level to meet the needs of vegetable crop growth.

The solar greenhouse adopts relatively simple facilities, makes full use of solar energy, and generally does not heat up the winter for vegetable cultivation in cold areas, while the cultivation facility for the production of fresh vegetables has distinctive Chinese characteristics. The structure of solar greenhouses varies from place to place, and there are more classification methods. According to the wall materials, there are mainly dry soil greenhouses, masonry greenhouses, and composite greenhouses. According to the length of the back roof, there are long back slope greenhouse and short back slope greenhouse; according to the front roof form, there are two-fold type, three-fold type, round arch type, micro-arch type, etc. According to the structure, there are bamboo-wood structure, steel-wood structure, reinforced concrete structure, all-steel structure, all-reinforced concrete structure, suspension cable structure, and hot-dip galvanized steel pipe assembly structure.

The front slope is covered with thermal insulation at night, and the east, west, and north sides are single-slope plastic greenhouses with enclosing walls, collectively referred to as solar greenhouses. Its prototype is a single-slope glass greenhouse. The transparent cover material of the front slope is replaced by a plastic film instead of glass, which evolved into an early solar greenhouse. The solar greenhouse is characterized by good heat preservation, low investment, and energy saving, which is very suitable for use in my country's economically underdeveloped rural areas.

Multi-span greenhouses have more benefits. It is easy to manage and can be controlled by one person. The cost is low, the space used is large, the cost of a single shed is high, and the use value is not as good as that of a multi-story building. Most customers choose multi-story, because it is more convenient to automate processing now.