过去对保护地结构遮光方面的研究很不够,有估计过低的倾向。最近有些人开始用模拟实验的方法,对建材的阴影作了一些比较详细的测验。初步认识到阴影对温室(大棚)内光照的影响,特别是对光照分布的影响,要超过屋面角度对室(棚)内光照的影响。 建筑材料(檩、梁、椽、柱和窗框等)遮光后,玻璃的受光面积减小,同时在保护地内 In the past, research on the shading of protected areas was insufficient and there was a tendency to underestimate. Recently, some people began to use the method of simulation experiments, the shadow of the building made some more detailed test. Preliminary understanding of the impact of shading on the light in the greenhouse (greenhouse), especially on the light distribution, should exceed the effect of the roof angle on the light in the chamber. After the building materials (檩, beams, rafters, columns and window frames, etc.) are shielded, the light-receiving area of ​​the glass is reduced and, at the same time,