|In the season when plants are not suitable for plant growth, the greenhouse can provide growth period and increase yield, and is used for plant cultivation or seedling cultivation of vegetables, flowers, trees, etc. in low temperature seasons. There are many types of greenhouses, which can be divided into many types according to different truss materials, lighting materials, shapes and heating conditions, such as glass greenhouses, plastic polycarbonate greenhouses; single-story greenhouses, multi-span greenhouses; single-roof greenhouses, double Roofing greenhouses; heating greenhouses, unheated greenhouses, etc. The structure of the greenhouse should be sealed and insulated, but it should be easy to ventilate and cool down. The modern greenhouse has equipment that controls conditions such as temperature, humidity, and light, and uses computers to automatically control the optimal environmental conditions required to create plants.|
The greenhouse is a building material for all or part of the enclosure material, which can be used to cultivate plants in the winter or other seasons when plants are not suitable for open field growth.
Large-scale multi-span plastic greenhouses are a type of greenhouse that has emerged and developed rapidly in the past decade. Compared with the glass greenhouse, it has the advantages of light weight, less amount of skeleton materials, low shading rate of structural parts, low cost, long service life, etc. Its environmental control ability can basically reach the same level of glass greenhouse, and plastic greenhouse users accept The ability is far higher than the glass greenhouse in the world, becoming the mainstream of modern greenhouse development.