在受控环境农业中对Portulaca olearacea的光合作用光子流密度影响
Gediminas Kudirka1, Akvilė Viršilė1, Kristina Laužikė1
1Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, Kauno Str. 30, 54333 Babtai, Lithuania.
Plants (Basel, Switzerland)
|October 28, 2023
概括
在控制环境农业 (CEA) 中,优化照明至关重要. 这项研究表明,最佳光合作用光子流量密度 (PPFD) 适用于普通白的生长因品种而异,绿色类型在更高的光线水平下显示出更大的干重积累.
科学领域:
- 园艺园艺 园艺园艺
- 植物生理学 植物生理学
- 控制环境 农业 (CEA)
背景情况:
- 优化照明是CEA节能作物生产的关键.
- (Portulaca oleracea) 是一种有价值的作物,有可能用于CEA种植.
- 了解种类对光的特定反应对于定制的种植策略至关重要.
研究的目的:
- 为了评估光合作用光子流量密度 (PPFD) 对普通鱼生长,光合作用和抗氧化剂反应的影响.
- 在CEA系统中识别CEA系统中常用道的节能照明策略.
- 在不同的光线条件下比较绿色和金色鱼品种的表现.
主要方法:
- 在CEA室内种植绿色和金色鱼品种.
- 应用四种PPFD处理方法 (150, 200, 250, 300 μmol m-2s-1),对应于特定的每日光积分 (DLI).
- 测量生长参数 (干重,植物高度,叶面积),光合作用效率 (LUE,ETR) 和抗氧化剂反应.
主要成果:
- 对PPFD的光学反应是特定于品种的,绿色品种在更高的光强度下积累了显著更多的干重.
- 虽然PPFD的干重量增加了,但经济意义更好地通过衍生参数来解释 (Δ新鲜重量 (%) /ΔDLI %).
- 当PPFD从200增加到250μmolm−2s−1时,相对新鲜体重的最大增加发生,在更高水平时,回报率下降.
结论:
- 为了最大限度地提高CEA中常见的紫产量,需要对PPFD进行种类特定的优化.
- 最佳的照明策略包括平衡PPFD和DLI,以获得高效的生物质.
- 需要进一步研究CEA中光强度和品种选择对经济影响.
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