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There are different types of greenhouses, but they all have large areas covered with transparent materials that let sunlight pass and block it as heat. The most common materials used in modern greenhouses for walls and roofs are rigid plastic made of polycarbonate, plastic film made of polyethylene, or glass panes. [1]
The area of greenhouse cover is still increasing at a fast rate, during the last decade it is estimated that it has been growing by 20% every year. Areas such as the Middle East and Africa are growing in their use of plastic greenhouses by 15-20% per year, compared to the weak growth in more developed and economically stable areas such as Europe.
Polytunnel. A polytunnel (also known as a polyhouse, hoop greenhouse or hoophouse, grow tunnel or high tunnel) is a tunnel typically made from steel and covered in polyethylene, usually semi-circular, square or elongated in shape. The interior heats up because incoming solar radiation from the sun warms plants, soil, and other things inside the ...
This greenhouse is fairly portable, with three tiers and 12 shelves that are encased in a PE cover. The house has roll-down mesh side windows and a roll-down door for access and airflow along with ...
Location of the province of Almeria (Spain). The intensive agriculture of the province of Almeria, Spain, is a model of the utilization of highly technical means to achieve maximum economic yield based on the rational use of water, use of plastic greenhouses, highly technical training and high levels of employment of inputs, applied to the special characteristics of a particular environment.
Poniente Almeriense is a comarca in Almería, Spain. It is sometimes also known as the "sea of plastic" (Mar de plástico) due to the numerous greenhouses that cover the area. The comarca contains ten municipalities (the tenth, Balanegra, was created in 2015 from part of Berja municipality) and 259,357 inhabitants [2] in an area of 971 km 2.
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