大棚膜是指用于设施农业生产建设的专用塑料薄膜，其透光率，保温，抗拉及耐老化方面的性能均优于普通农膜。对大棚农作物的生长，增产及增收具有重要意义。

Greenhouse film refers to the special plastic film used for facility agricultural production and construction. Its transparency, heat preservation, tensile strength and aging resistance are superior to ordinary agricultural film. It is of great significance to the growth, yield and income of crops in greenhouses.