常州市的塑料大棚一般采用钢管搭架,跨度6米,高2.3米,覆盖0.1毫米厚的聚乙烯薄膜,单棚面积0.3亩.不加温,下部自然通风.目前主要用于冬春两季茄瓜类蔬菜的育苗和早熟栽培.塑料大棚内,因薄膜的覆盖面减少了太阳能的进入,抑制了空气的流动,同时也减少了地面辐射和土壤水分的散 Changzhou Plastic Greenhouses generally use steel frame, span 6 meters, 2.3 meters high, covering 0.1 mm thick polyethylene film, single shed area of ​​0.3 acres. Not heating, the lower part of the natural ventilation. Currently mainly used for winter and spring seasons Soybean melon vegetables nursery and precocious cultivation. Plastic greenhouse, due to the coverage of the film to reduce the access to solar energy, inhibiting the flow of air, but also reduce the ground radiation and soil moisture scattered