Effects of Net photosynthetic rate of pteridium aquilium on photosynthetic active radiation increasing progressively

In the experimental condition, Pteridium aquilinum Net photosynthetic rate increase by Photosynthetic active Radiation increasing before it reach Light saturation point, Light compensation points and Light saturation point are even lower, that is partly 50μmol·m^-2·s^-1 and 400μmol·m^-2·s^-1. It tells Pteridium aquilinum has character of shade plants. Some measures should be considered in the practical production.