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江苏省大丰县科协吴桂生来稿称,用蓝色增强超强薄膜(厚0.015毫米)比用白色增强超强薄膜(厚0.015毫米)育秧效果好。蓝色膜的透光率和膜内光照强度在中午前后稍低于白色膜,而在早、晚、阴天则稍高于白色膜;增温作用两者相近,一般晴天可增温5—6℃,阴冷天增加1℃以上,而在晴天中午气温较高时,蓝色膜增温比白色膜低2—3℃,蓝色膜内小气候变化较平稳,可减轻或避免灼伤秧苗和产生徒长,利于育成矮壮秧;在低温阴雨天气,蓝色膜育秧,烂秧死苗较少,成秧率高;覆盖蓝色地膜的秧苗叶色浓
Association of Science and Technology, Dafeng County, Jiangsu Province, said Wu Guisheng, with blue super-thin film (0.015 mm thick) than with white super-thin film (0.015 mm thick) good seedling. The transmittance of the blue film and the light intensity in the film were slightly lower than those of the white film before noon, but slightly higher than the white film in the morning, evening and cloudy days; the warming effect was similar, 6 ℃, cloudy days increased 1 ℃ above, and in the sunny noon temperature is higher, the blue film than the white film temperature warming 2-3 ℃, blue film microclimate changes more stable, can reduce or avoid burned seedlings and produce Legitimate, conducive to bred short sturdy seedlings; in the rainy weather, the blue film seedlings, rotten seedlings less dead, into a high rate of transplanting seedlings; covered with blue film seedling leaf color thick