PPFD

PPFD(κ΄‘ν•©μ„± κ΄‘μžμ† 밀도)λŠ” 식물 ν‘œλ©΄μ— μ΄ˆλ‹Ή μ „λ‹¬λ˜λŠ” κ΄‘ν•©μ„± ν™œμ„± κ΄‘(400–700 nm)의 양을 μΈ‘μ •ν•˜λ©°, λ‹¨μœ„λŠ” μ œκ³±λ―Έν„°λ‹Ή 마이크둜λͺ° 맀 초(Β΅mol/mΒ²/s)둜 ν‘œμ‹œλ©λ‹ˆλ‹€. μ΄λŠ” 식물 생μž₯λ“±μ˜ 강도와 νš¨μœ¨μ„±μ„ λΉ„κ΅ν•˜λŠ” 데 κ°€μž₯ μ •ν™•ν•œ μ§€ν‘œμž…λ‹ˆλ‹€.

μ£Όμš” 사싀

  • Measures light in the photosynthetically active radiation (PAR) range: 400–700 nm
  • Unit: Β΅mol/mΒ²/s β€” how many photons hit one square metre of canopy per second
  • Leafy greens thrive at 150–250 Β΅mol/mΒ²/s; fruiting crops need 400–800+
  • PPFD varies with distance from the light source β€” measure at canopy height
  • More useful than wattage for comparing grow lights across brands and technologies
  • Daily light integral (DLI) = PPFD Γ— hours of light β€” the total daily photon dose

κ΄€λ ¨ μš©μ–΄

LED 식물 생μž₯λ“±κ΄‘μ£ΌκΈ°μˆ˜μ§ 농업
← λͺ¨λ“  μ •μ˜
PPFD β€” μš©μ–΄ 사전 | grow.food | grow.food