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更新日期：2017-10-11
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Greenhouses (also called greenhouses and crop houses [1]) are a building where crops are cultivated. A greenhouse made of glass or plastic; He gets hot because the electromagnetic radiation coming from the sun heats up plants, soil, and other goods inside this building.
The glass used for working homes works as a transmission medium that can choose different spectral frequencies, and the effect is to capture the energy inside the greenhouse, which heats the plants and the soil inside which also heats air near the ground and the air is prevented from rising to up and flow out. Therefore greenhouses work by capturing electromagnetic radiation and preventing convection.
Greenhouses are often used to develop flowers, fruits and tobacco plants. Bees from the genus Bombus are the pollinator of choice for many greenhouse pollination, although other bee types are also used, as well as artificial pollination.
Tobacco plants inside the plant house are being weeded, in Hemingway, South Carolina
Many vegetables and flowers are developed in greenhouses in late winter or early spring, which are then moved outward as the weather gets warm.
Rooms that are covered from greenhouses have unique requirements, compared to outdoor production. Pests and diseases, and high heat and humidity, must be controlled, and irrigation is needed to provide water.
Greenhouses are important in the provision of food in high latitudes. The largest greenhouse complex in the world is located in Leamington, Ontario (near Canada's southernmost point) where about 200 "acres" (0.8 km²) of tomatoes are developed in glass.
Greenhouses protect plants from excessive heat and cold, protect the plants from dust storms and "blizzards", and help prevent pests. Control of light and temperature can transform infertile soil into fertile. Greenhouses can provide a country of food supplies, where plants can not grow because of environmental malignancies. Hydroponics can be used in greenhouses to use space effectively.
