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一、银色反光薄膜的覆盖作用银色反光薄膜(简称银膜)具有保温、防寒、遮荫、反光、驱蚜等作用。果树覆盖利用其优良的反光能力,增强树下光照,促进果实着色,提高成熟度,提高果品质量等级,增加经济效益为目的。1982年9月18日11时我们测定距地面1米高的反射光照为:树冠下300Lux(勒克斯),生长矮草的空旷地1000Lux;覆盖日本银膜后分别增加到2800和11800 Lux,增加了8.3—10.8倍。1980—1982年用天津银膜在树盘下覆盖作多点试验,距地面40厘米处的反射光照比不盖膜的平均增加3.61倍。果面红色决定于红色素(即
First, the silver reflective film coverage Silver reflective film (referred to as the silver film) with insulation, cold, shade, reflective, aphids and other functions. Fruit tree coverage using its excellent reflective ability, enhance the lighting under the tree, promote fruit coloring, improve maturity, improve the quality of fruit grade, increase the economic benefits for the purpose. At 11 o’clock on September 18, 1982, we determined that the reflected light at a height of 1 m above the ground was: 1000 Lux under the canopy and 1,000 lux of the weed growing in the canopy. After covering the Japanese silver film, it increased to 2800 and 11800 Lux respectively, increasing 8.3-10.8 times. In 1980-1982, the Tianjin silver film was used for multi-point coverage under the tree plate, with an average increase of 3.61 times the reflected light intensity at 40 cm above the ground compared with the non-covered film. Fruit red depending on the red pigment (ie