The plant growth lamp test system (PPFD) is used to measure the test parameters of plant growth lamps:photosynthetically active radiation (PAR), photosynthetic photon flux (PPF), PPF (400-500nm), PPF (500-600nm), PPF (600-700nm), PFuv (360-400nm), PFfr(700-800nm) , photosynthetic photon efficiency (PPE), ch-A、ch-B. The most sensitive region of plants to the spectrum is 400-700nm, which is usually called the effective energy region of photosynthesis. About 45% of the energy of sunlight is located in this spectrum.
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