The advantages and kinds of agriculture multi-span greenhouse
Do you know the advantages of agriculture multi-span greenhouse and superiority? Now let me tell you. The main advantage is to improve the land utilization rate. The land utilization rate of the traditional rear wall greenhouse is about 50%. However, multi-span greenhouses are not limited by earth walls and front and rear areas, and the land utilization rate is above 95%. China occupies an average of 0.54 hectares of land per person, accounting for 29% of the worlds per capita. Improving land-use efficiency, production output and efficiency has always been the focus of our work on agriculture, rural areas and farmers. The agriculture multi-span greenhouse is divided into the multi-span greenhouse, single greenhouse, winter warm greenhouse, and special greenhouse .i will tell you the knowledge to you.
Multi-span greenhouse: Multi-span multi-bay greenhouse refers to a multi-span multi-bay greenhouse with the relatively large overall area, which can greatly provide land utilization rate and meet the needs of automatic production and operation. Multi-span greenhouses can be divided into all-glass multi-span greenhouses, all-pc sunshine board multi-span greenhouses, PC sunshine board-glass multi-span greenhouses, film multi-span greenhouses, photonics greenhouses and new material multi-span greenhouses, etc. due to different covering materials. The common spans of multi-span greenhouses are 8m, 9.6m, 10.8m, 12m, etc., and the bays are 4m and 8m.
Single greenhouse: Single greenhouse is usually small in area, with a span of 6m-10m and a length of 50m-80m. Single greenhouse, also known as spring and autumn greenhouse, is currently the most widely used greenhouse structure.
Warm-in-winter greenhouse: Warm-in-winter greenhouse is commonly used to plant out-of-season crops in cold areas. Its structural design makes full use of sunlight to obtain sufficient heat energy, also known as an energy-saving solar greenhouse.
Agriculture Multi Span Greenhouse
The superiority and principle of an agricultural glass greenhouse
The principle of agricultural glass greenhouse: ultraviolet rays in solar radiation is absorbed by ozone, infrared rays are absorbed by carbon dioxide and water vapor and the remaining short-wave radiation-visible light penetrates glass or plastic to reach the surface in the greenhouse. The surface in the greenhouse heats up after absorbing short-wave radiation and then transmits energy upward to the atmosphere in the greenhouse in the form of long-wave radiation. Long-wave radiation cannot penetrate glass and plastic, so a lot of heat is concentrated in the atmosphere in the greenhouse and the atmosphere inside and outside the greenhouse cannot exchange heat due to the blockage of glass and plastic, so the heat stays in the greenhouse and the temperature inside the greenhouse is high.
High temperature promotes plant growth and material circulation and accelerates photosynthesis. This is the planning and production principle of greenhouse.
Advantages of agricultural Glass Greenhouse: firstly, the appearance of the glass greenhouse has a large lighting area, light transmittance is as high as more than 90%, and the indoor temperature rises rapidly. Secondly , Glass greenhouse has a long service life and is not easy to dew. Thirdly The whole glass greenhouse is transparent, bright, beautiful and generous.
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