The period of breeding and the increase of yield are mostly used for the planting or nursery of plants such as vegetables, flowers and forest trees in the low temperature season. There are many kinds of greenhouses, which can be divided into many types according to different roof truss materials, lighting materials, shape and heating conditions, such as glass greenhouses, plastic polycarbonate greenhouses; single-span greenhouses, multi-span greenhouses; single-roof greenhouses, double Roof greenhouse; warming the greenhouse, not warming the greenhouse. The greenhouse structure should be sealed and kept warm, but it should be convenient for ventilation and cooling. Modern greenhouses have facilities for controlling temperature, humidity, light and other conditions, and use computers to automatically control the optimal environmental conditions needed to create plants.
The greenhouse is a light-covered material used as a whole or part of the envelope material, which can be used for the cultivation of plants in the winter or other seasons where unfavorable open plants grow.
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