Effects of daily light integrals of light emitting diode on the growth of pepper, cucumber and lettuce seedlings
Taking pepper ‘Bola Hongshuai’, cucumber ‘Jinyan No. 4’ and lettuce ‘Batavia’ as experimental materials, the combinations of three groups of photosynthetic photon flux density (PPFD) [160, 200 and 240 μmol/(m<sup>2</sup>•s)] and three groups of photoperiod (12, 15, 18 h/d) were set up to...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2022-04-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2021.07.121 |
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| Summary: | Taking pepper ‘Bola Hongshuai’, cucumber ‘Jinyan No. 4’ and lettuce ‘Batavia’ as experimental materials, the combinations of three groups of photosynthetic photon flux density (PPFD) [160, 200 and 240 μmol/(m<sup>2</sup>•s)] and three groups of photoperiod (12, 15, 18 h/d) were set up to form eight groups of different daily light integral (DLI) treatments to study the effects of DLIs of light emitting diode (LED) on the growth of their seedlings. The results showed that the optimal light conditions were PPFD of 160 μmol/(m<sup>2</sup>•s) with photoperiod of 15 h/d [DLI of 8.6 mol/(m<sup>2</sup>•d)] for ‘Bola Hongshuai’ pepper seedlings, PPFD of 200 μmol/(m<sup>2</sup>•s) with photoperiod of 15 h/d [DLI of 10.8 mol/(m<sup>2</sup>•d)] for ‘Jinyan No. 4’ cucumber seedlings, and PPFD of 200 μmol/(m<sup>2</sup>•s) with photoperiod of 18 h/d [DLI of 13.0 mol/(m<sup>2</sup>•d)] for ‘Batavia’ lettuce seedlings. The results provide optimized LED light environment parameters for vegetable seedling production. |
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| ISSN: | 1008-9209 2097-5155 |