延长光周期可以在恒定的日常光线下改善帕克的生长和营养质量
Kartika R Susilo1, Anastasia Eu2, Britt Besemer1
1Department of Plant Sciences, Horticulture and Product Physiology Group, Wageningen University and Research, Wageningen, Netherlands.
Frontiers in plant science
|August 20, 2025
概括
延长每日光照时间 (光照期) 显著改善了帕克的生长,而不是增加光线强度. 这种光周期策略在受控环境中提高了作物产量和营养含量.
科学领域:
- 植物生理学
- 控制环境 农业
- 园艺科学
背景情况:
- 光周期是影响植物生长,发育和新陈代谢的关键环境提示.
- 在受控农业中优化光线条件可以提高作物产量和营养价值.
- 在固定日光积分 (DLI) 下,光周期与光强度对叶蔬菜的比较效应需要进一步研究.
研究的目的:
- 调查每日光线积分 (DLI) 对帕克 (Brassica rapa L. 亚种) 的影响. 它们的生长,产量和质量.
- 确定通过光周期延长或增加光强度 (PPFD) 实现的 DLI 变化是否会产生不同的结果.
- 评估光周期操纵与PPFD调整的效率,以优化pak choi生产.
主要方法:
- 在四个不同的DLI下种植Pak choi品种 (10.818.9mol m-2d-1).
- 在恒定的PPFD (250μmol m−2 s−1) 或在恒定的18小时光周期中通过变化的PPFD (167292 μmol m−2 s−1) 来操纵DLI.
- 分析了生长,产量,质量参数和代谢含量.
主要成果:
- 通过光周期延长增加DLI比通过更高PPFD增加DLI带来更大的增长.
- 光周期延长通常会提高光效率和能源效率.
- 维生素C,葡萄糖酸盐和其他代谢物随着DLI的增加而增加,不论使用的方法如何;然而,保质期和视觉质量没有受到影响.
结论:
- 延长光周期是一个比增加光强度更有效的策略,
- 光周期操作为叶菜生产提供了更好的光和能源使用效率.
- 虽然DLI影响营养含量,但它不会显著地改变Pak Choi的保质期或视觉质量.
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