树苗贮运保鲜袋楼玉海，马文海近年来，国内外研制和迅速推广了一种价廉、简便、保鲜效果甚佳的树苗贮运保鲜袋。这种保鲜袋是用聚烃烯树脂加工而成的一种多层结构的塑料薄膜复合重包装袋。它能反射和吸收９５％以上的光线、使袋温在直射阳光下也无明显增温效应，保湿性极... In recent years, domestic and foreign research and rapid promotion of a cheap, simple, fresh preservation effect is very good sapling storage and storage bags. This kind of fresh-keeping bag is a kind of multi-layer structure plastic film composite re-packing bag which is made of polyolefine resin. It can reflect and absorb more than 95% of the light, the bag temperature in the direct sunlight also no significant warming effect, moisture ...