要正确选用地膜目前，我国地膜用量已达５０万吨以上，地膜覆盖面积７０００万亩，棚膜覆盖面积３００万亩，均居世界第一位。在品种方面也有很大发展，从单一普通农膜向多功能性发展，开发、生产、应用不同材质、各种颜色、不同功能的膜种，促进了我国农业生产的稳步增长... To correctly select the film Currently, China has reached the amount of 500,000 tons of plastic film, plastic film covers an area of ​​70000000 acres, the film covers an area of ​​3000000 mu, ranking first in the world. In terms of varieties, there has also been a great development. From a single common agricultural film to the development of multi-functional, development, production, application of different materials, all kinds of colors, different functions of the membrane, and promote the steady growth of agricultural production in China.