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Ｌ－蓝光膜是中国科学学院广州能源研究所研制成功的大田作物覆盖薄新产品。采用Ｌ－蓝光膜覆盖水稻秧苗，阴天膜内日均温比透明膜高０．３℃，比露天处理高１．８℃，而晴天分别高０．８℃和２．９℃，增加苗干重、苗根活力和秧苗成活率。叶绿素含量、叶绿体光还原活力、光合速率、ＲｕＢＰ－Ｃａｓｅ活性、可溶性糖、淀粉、ＮＯ－２－Ｎ、ＮＨ＋４－Ｎ蛋白质含量、ＲＮ活性均比透明膜及露天处理的提高。秧苗覆盖处理的孕穗期植株仍有良好的生理效应，且抽穗期比透明膜早３ｄ，比露天处理的早５ｄ，穗粒性状改善，谷产量提高
L-blue film is the Chinese Academy of Sciences, Guangzhou Institute of Energy successfully developed field crop cover thin new products. L-Blu-ray film was used to cover rice seedlings. The daily average temperature in the cloudy day was 0.3 ℃ higher than that of the transparent film, 1.8 ℃ higher than that of the open-air treatment, and 0.8 ℃ and 2.9 ℃ higher in the sunny days Dry weight, seedling root activity and seedling survival rate. Chlorophyll content, chloroplast photoreduction activity, photosynthetic rate, RuBP-Case activity, soluble sugar, starch, NO-2-N, NH + 4-N protein content and RN activity were all higher than those of the transparent film and the open-air treatment. The booting plants with seedling coverage still had good physiological effects, and the heading stage was 3 days earlier than that of the transparent membrane, 5 days earlier than the open-field treatment, with the improvement of grain traits and grain yield