The invention provides an automatic illumination adjusting method and
system based on seed and
seedling cultivation, and relates to the technical field of illumination control and intelligent
agriculture, the method comprises the following steps: firstly, collecting
seedling chlorophyll fluorescence parameters to construct a
light stress index, and accurately identifying a light inhibition risk; then calculating a physiologically permissible
light intensity threshold adaptive to the dark response capability of the
plant by combining the environment temperature and the CO2 concentration; positioning a shielded weak light area by using three-dimensional
point cloud voxelization and a
ray tracing technology, and calculating a shadow compensation
gain coefficient; and finally, generating a control matrix in combination with a dynamic left-rotation light strategy, and driving an independent addressing
LED array and a variable-angle lens to execute local precise light supplement and light vector adjustment. Through physiological feedback and spatial
light field reconstruction, the problem that traditional illumination control neglects individual tolerance difference and
canopy shielding is solved, photooxidation damage is effectively prevented, and the growth uniformity and the
light energy utilization rate of
seedling groups are remarkably improved.