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Effect of Daily Light Integral on Cucumber Plug Seedlings in Artificial Light Plant Factory

文献类型: 外文期刊

作者: Cui, Jiawei 1 ; Song, Shiwei 1 ; Yu, Jizhu 2 ; Liu, Houcheng 1 ;

作者机构: 1.South China Agr Univ, Coll Hort, Guangzhou 510642, Peoples R China

2.Shanghai Acad Agr Sci, Hort Res Inst, Shanghai Key Lab Protected Hort Technol, Shanghai 201403, Peoples R China

关键词: daily light integral; cucumber seedling; seedling quality; flower development

期刊名称:HORTICULTURAE ( 影响因子:2.331; 五年影响因子:2.951 )

ISSN:

年卷期: 2021 年 7 卷 6 期

页码:

收录情况: SCI

摘要: In a controlled environment, in an artificial light plant factory during early spring or midsummer, vegetable seedlings can be uniform, compact, and high quality. Appropriate light parameters can speed up the growth of seedlings and save on production costs. Two experiments were carried out in this study: (1) cucumber seedling growth under different daily light integrals (DLIs) (5.41-11.26 mol center dot m(-2)center dot d(-1)) and optimum DLI for seedling production were explored (experiment 1: Exp. 1); (2) under the same DLI selected by Exp. 1, the effects of different light intensities and photoperiods on cucumber seedlings were investigated (experiment 2: Exp. 2). The root biomass, root-to-shoot ratio, seedling index, and shoot dry matter rate increased as the DLI increased from 5.41 to 11.26 mol center dot m(-2)center dot d(-1), while the shoot biomass and leaf area decreased in Exp. 1. The cucumber seedlings became more compact as DLI increased, but more flowers developed after transplanting when the DLI was 6.35 mol center dot m(-2)center dot d(-1). Under the optimal DLI (6.35 mol center dot m(-2)center dot d(-1)), the optimal intensity was 110-125 mu mol center dot m(-2)center dot s(-1), and the optimal photoperiod was 14-16 h, in which plant biomass, shoot dry matter rate, seedling index, and photochemical efficiency were higher.

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