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日光温室广泛应用的外层覆盖物是蒲席和草帘,虽然其隔热性较好,但是卷帘盖帘费力费时,而且材料一旦被雨雪浸湿,保温性能下降,操作也更加困难。所以,研制出隔热性能更佳、操作方便、经久耐用的日光温室外层覆盖物,便显得日益重要。现在,一种可提高温室保温性能的“强力防水无纺布”已经开发出来,使用方法是铺设在塑料薄膜和蒲席或草帘之间。其保温原理一是增加了覆盖物的热阻;二是蒲席或草帘难免有缝隙,所以存在一定的透射热量损失,而用密实的无纺布覆盖后,透射热量损失则
The outer cover widely used in the solar greenhouse is the grass mat and straw mat. Although its heat insulation property is better, the roller blind curtain is laborious and time-consuming. Once the material is wetted by rain and snow, the thermal insulation performance is reduced and the operation is more difficult. Therefore, the development of better insulation performance, easy to operate, durable solar greenhouse coverings, it is increasingly important. Now, a kind of “strong waterproof non-woven fabric” that can improve the insulation performance of greenhouses has been developed by laying it between plastic film and straw or straw curtain. The insulation principle is to increase the thermal resistance of the cover; Second, there is inevitable cracks or straw curtain cracks, so there is a certain loss of transmission heat, but with a dense non-woven cover, the loss of transmission heat