Glass greenhouse refers to the greenhouse with hot-dip galvanized steel skeleton and glass as the lighting material, with special aluminum profiles on the top and around the greenhouse. In cultivation facilities, glass greenhouse, as a form with the longest service life, is suitable for a variety of regions and various climatic conditions. This type of greenhouse can realize fully automatic control, supporting facilities are optional, external shading system, internal shading system, fan water curtain cooling system, top opening window ventilation system, supplemental light system, seedbed nursery system, sprinkler system, computer control system and so on.

　　1, understand what is the insulation effect of the atmosphere? (Earth's atmosphere is almost transparent to the solar short-wave radiation, most of the solar radiation can be shot through the atmosphere to the ground, so that the ground warming; Atmosphere on the ground long-wave radiation is the insulation layer, the ground radiation puts out a large part of the heat retained in the atmosphere, and through the atmospheric counter-radiation and the heat back to the ground. People call this role of the atmosphere, the atmospheric insulation effect). 　　Therefore, the increase of carbon dioxide will strengthen the "greenhouse effect" of the atmosphere. (Carbon dioxide increases, the ability of the atmosphere to absorb long-wave radiation from the ground to enhance the temperature of the atmosphere; make the atmosphere's ability to enhance the counter-radiation to compensate for the loss of heat from the ground is also increased). 　　

　　2, how to understand the greenhouse effect of glass greenhouse? The role of glass is similar to the role of carbon dioxide insulation. Solar short-wave radiation through the glass and plastic greenhouses to make indoor warming, indoor ground warming after the release of ground radiation is blocked by the glass or plastic greenhouses, reducing heat loss. At the same time, the glass also prevents indoor (warm) and outdoor (cold) air to convection or turbulence for heat exchange, so that the temperature inside the greenhouse is higher than outside. 　　

　　3, the northern greenhouse technology on agricultural production of light, heat, water conditions favorable impact? (① winter light can be fully utilized; ② improve the temperature inside the greenhouse, reduce the impact of winter freezing temperatures on agriculture, so that crops can also be planted in winter; ③ is conducive to maintaining, regulating the air and soil moisture in the greenhouse.)