Influence Simulation of Greenhouse Light Environment from Roof Shape

Influence of roof shape type on light environment in greenhouse was simulated and studied by greenhouse light environment simulation software of China Agricultural University.Results showed that effect of light environment was very small from 3 different roof shape，such as double circular arc，elliptical and linear combination.Optical radiation accumulation of elliptical roof was relatively large，but difference only was 0.048%.Therefore，without too much considering influence of roof shape when a greenhouse was built from perspective of light environment.