Multispan Film Greenhouse For Vegetable Growth

Film in greenhouse was different from the traditional individual greenhouse, but a single connected greenhouse greenhouse, the original independent greenhouse, with reasonable design, the original mode of independent single greenhouse together, increase the area of heat preservation, which improves the performance of greenhouse, heat preservation performance of thin film is one of the important performance indexes in greenhouse, greenhouse insulation than refers to the greenhouse pervious to light material thermal resistance smaller area covered greenhouse palisade structure and thermal resistance of the larger area covered with landarea of more than the sum.

The greater the heat preservation ratio, the better the heat preservation performance of the greenhouse.Transmittance is the first choice of multi-span thin film greenhouse. The greenhouse is a lighting building, so transmittance is the basic index to evaluate the transmittance of the greenhouse.Transmittance is the percentage of the amount of light entering the room and the amount of light entering the room.

The transmittance of the greenhouse covering material and the shadow rate of the greenhouse frame have an influence on the transmittance of the greenhouse. In different seasons, the transmittance of the greenhouse gas changes with the change of the solar radiation Angle.Low light transmittance in greenhouse is the direct factor affecting crop growth and crop variety selection.In general, the transmittance of multi-span plastic greenhouse is 50/60, the transmittance of glass greenhouse is 60/70, the transmittance of solar greenhouse is more than 70.