地膜“一膜多用”,主要内容表现在四个方面:一是过去地膜只种一茬蔬菜,现在一块地膜要用于几茬蔬菜;二是过去地膜只是铺地,现在还可以盖天,代替农膜;三是过去地膜只用于经济价值高、使用时间长的蔬菜,现在可短期覆盖,也可长期使用,因而可用于各种蔬菜;四是应用时间比过去提早, Film “a multi-purpose film,” the main contents of the performance in four areas: First, the past only a single crop of plastic film, and now a piece of film to be used for several vegetables; Second, the past is only the ground film shop, and now you can cover the sky, instead of Plastic film; Third, the past is only used for high economic value membrane, the use of a long time vegetables, now can be short-term coverage, but also long-term use, which can be used for a variety of vegetables; Fourth, the application time earlier than in the past,