自农膜问世以来，在农业科技进步方面起了巨大推动作用，尤其是表现在农作物的产量和质量方面。为了更加充分合理地利用有色农膜，现特介绍如下。蓝色田其主要特点是保温性能良好。在弱光条件下，透光率高于普通膜，在强光照射条件下，透光率低于普通膜，该膜用于育秧、育苗，? Since the advent of plastic sheeting, it has played a significant role in promoting agricultural science and technology, especially in terms of crop yield and quality. In order to make full and rational use of colored plastic film, are introduced as follows. Blue field its main feature is good thermal insulation properties. In low light conditions, the light transmittance higher than the ordinary film, in the light irradiation conditions, the light transmittance is lower than ordinary film, the film used for seedling, nursery,?