What is the illumination of sunlight during the day? I want to use bulb lights for lighting in the greenhouse. Should the lighting be designed according to this?

On sunny days, the ground illumination is above 65438+ 100000 lux. In summer, I measured 200,000 lux. Artificial light sources can never reach the illumination level of sunlight. For example, the illumination of street lamps on the ground is only about 20lux, and the illumination of operating tables with high illumination requirements is only about 2-3,000 lux.

In addition, assisting plant growth is not only a matter of lighting, but also a matter of designing light source spectrum. The ability to recover the spectrum of sunlight is called coloration. The higher the color rendering index, the more effective it is for plant growth.

It is recommended that you use ceramic metal halide lamps. This color rendering index can reach Ra85, which means that light contains 85% of the spectrum of sunlight.