Multi span greenhouse

Film greenhouse, commonly known as cold shed, is a simple and practical protected cultivation facility. With the development of plastic industry, it is widely used all over the world because of its easy construction, convenient use and less investment. Using bamboo, wood, steel and other materials and covering with plastic film to build an arched shed for cultivating vegetables can advance or delay the supply, improve the yield per unit area, and help prevent natural disasters. Especially in the north, fresh and tender vegetables can be supplied in the off-season of early spring and late autumn.

The film greenhouse makes full use of solar energy and has a certain thermal insulation effect. The temperature and humidity in the greenhouse can be adjusted in a certain range through film rolling. Therefore, in northern China, plastic greenhouse mainly plays the role of thermal insulation cultivation in advance of spring and delayed in autumn. Generally, it can be 30-35 days in advance in spring and 20-25 days in autumn, but overwintering cultivation cannot be carried out; In southern China, plastic greenhouses can not only be used for heat preservation and overwintering cultivation of vegetables and flowers in winter and spring, but also replace shading nets for shading and cooling in summer and autumn and protected cultivation against rain, wind and hail.

China has a vast territory and complex climate. The facility cultivation of vegetables and flowers in plastic greenhouses has played a special and important role in alleviating the contradiction between supply and demand of vegetables in the off-season, and has significant social and practical huge economic benefits.