Enter PPFD and daily lighting hours to compute daily light integral (DLI, mol/m²/d) and compare it with crop requirements to decide supplementary lighting strategy.
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Photosynthetic photon flux (PPF) | PPF over 400-700 nm PAR band | McCree 1972 |
| PPFD (μmol·m⁻²·s⁻¹) | PPFD = PPF / area | Philips GreenPower |
| Daily light integral (DLI) | DLI = PPFD × h × 3600 / 10⁶ | Sager & McFarlane 1997 |
️ 光照累积量(DLI)计算器。农业种植工具,帮助计算种植参数与产量。
DLI = PPFD × 光照时长(h) × 3600 / 1e6 (mol/m²/d)。