Growpro

Illumination intensity refers to the luminous flux of visible light per unit area, usually expressed by PPFD (photosynthetic photon flux density), and the unit is micromol/square meter/second (μmol/m2/s). PPFD reflects the amount of light that plant leaves can absorb and is also an important factor affecting plant photosynthesis and growth. Different plants have different requirements for PPFD. Generally speaking, plants with high light requirements need higher PPFD, while plants with low light requirements need lower PPFD.