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目前市场上销售的塑料薄膜(农膜)品种较多,不同厂家生产的塑料薄膜其规格、功能与特点不同。为使菜农能正确掌握和使用适于自己生产所需的塑料薄膜,现将不同塑料薄膜的功能、特点与用途简介如下: 一、聚氯乙烯无滴膜是在聚氯乙烯普通薄膜原料的基础上,加入一定量的表面活性剂(防雾剂)制成。此膜无滴性、保温性较好,多用于冬暖大棚(日光温室)栽培经济价值较高的蔬菜。但寿命较短,一般冬暖大棚一年一茬,膜比重大,生产成本高,易吸尘,要经常冲刷。二、聚乙烯普通薄膜此膜透光性优于聚氯乙烯薄膜,耐低温性强,比重轻。与聚氯乙烯薄膜相比,同等重量的薄膜,覆盖面积可比聚氯乙烯薄膜增加24%,生产成本较低。适用于大、
Currently on the market more plastic film (plastic sheeting) varieties, different manufacturers of plastic film its specifications, functions and characteristics of different. To enable farmers to correctly grasp and use the plastic film suitable for their production, different plastic film now features, characteristics and uses are as follows: First, PVC drip film is based on ordinary PVC film raw materials , Add a certain amount of surfactant (anti-fog agent) made. This film drip-free, better insulation, and more for winter warm greenhouse (greenhouse) cultivation of vegetables with high economic value. But life expectancy is short, the general winter warm shed a year, the film than the major, high production costs, easy to vacuum, to frequent erosion. Second, the ordinary polyethylene film This film is better than translucent PVC film, low temperature resistance, light weight. Compared with polyvinyl chloride film, the same weight of film, PVC film coverage area can be increased by 24%, lower production costs. Suitable for large,