微孔膜是近年来发展的农用塑料膜新品种 ,具有增温、保墒、透气、渗水多种功能。加工方法有机械法、放射法、拉伸法、热压法和辅助剂添加法等。微孔膜可作地膜、棚膜、悬浮膜或多重覆盖 ,用于蔬菜、瓜果、烟草等高效益经济作物及粮食作物生产 ,提高产量和改善品质 ,已在很多国家应用 ,取得较好的效果。 Microporous membrane is a new variety of agricultural plastic film developed in recent years, with a variety of functions such as warming, preserving soil moisture, permeability and water permeability. Processing methods are mechanical method, radiation method, stretching method, hot pressing method and additive addition method. Microporous membrane for film, greenhouse film, suspended film or multiple coverage for vegetables, fruits, tobacco and other high-yield cash crops and crop production, improve yield and improve quality, has been applied in many countries, and achieved better effect.