School of Science, Shanghai Institute of Technology, Fengxian District, Shanghai, 201418, China.
Tianchang Fu'an Electronic Co., Ltd., Tianchang, 239300, China.
PLoS One. 2023 Nov 29;18(11):e0294876. doi: 10.1371/journal.pone.0294876. eCollection 2023.
Light-emitting diodes (LEDs) were the best artificial light source for plant factories. Red light-emitting diodes (LEDs, R) and blue light-emitting diodes (LEDs, B) were used to obtain different light intensities of uniform spectra, and the greenhouse environment was considered as a comparison. The results showed that root dry weight, shoot dry weight and stem diameter were superior in plant growth under 240 μmolm-2s-1, additionally, the Dixon Quality Index (DQI) was also best. Under 240 μmolm-2s-1, the net photosynthesis rate (Pn) was consistent with the greenhouse's treatment, superior to other experimental groups. The results implied that the PPFD was more suitable for the cultivation of tomato seedlings under the condition of 240 μmolm-2s-1, and can replace the greenhouse conditions so as to save energy and reduce emissions.
发光二极管（LED）是植物工厂的最佳人工光源。使用红色发光二极管（LED，R）和蓝色发光二极管（LED，B）来获得具有不同均匀光谱强度的光，同时将温室环境作为比较。结果表明，在 240 μmolm-2s-1 的光照强度下，植物的根干重、茎干重和茎直径的生长状况最佳，此外，Dixon 质量指数（DQI）也最佳。在 240 μmolm-2s-1 光照强度下，净光合速率（Pn）与温室处理一致，优于其他实验组。结果表明，在 240 μmolm-2s-1 的条件下，PPFD 更适合番茄幼苗的栽培，可以替代温室条件，从而节约能源、减少排放。
