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园艺学报 ›› 2019, Vol. 46 ›› Issue (9): 1670-1680.doi: 10.16420/j.issn.0513-353x.2018-0527

• 综述 • 上一篇    下一篇

光合有效辐射日总量(DLI)对植物生长发育的影响

崔佳维1,雷炳富1,刘厚诚2,*   

  1. 1华南农业大学材料与能源学院,广东省光学农业工程技术研究中心,广州 510642;2华南农业大学园艺学院,广州 510642
  • 出版日期:2019-09-25 发布日期:2019-09-25
  • 基金资助:
    国家重点研发计划项目(2017YFD0701504);广州市科技计划项目(201704020058,201704020006)

Effect of Daily Light Integral on Plant Growth and Development

CUI Jiawei1,LEI Bingfu1,and LIU Houcheng2,*   

  1. 1College of Materials and Energy,Guangdong Provincial Engineering Technology Research Center for Optical Agriculture,South China Agricultural University,Guangzhou 510642,China;2College of Horticulture,South China Agricultural University,Guangzhou 510642,China
  • Online:2019-09-25 Published:2019-09-25

摘要: 光合有效辐射日总量(Daily light integral,DLI)是指一天中用于植物光合作用的光能总量。就DLI对植物生长发育的影响展开讨论,总结其对植物种子萌发、植物营养生长和生殖生长阶段的影响,以期为生产上设置合适的DLI提供借鉴和指导。弱光条件下提高DLI,可以促进植物的生长发育:种子萌发阶段,需光种子萌发率与DLI呈正相关;营养生长阶段,适当提高DLI,可以促进根系和地上部的生长,提高生物量的积累;生殖生长阶段,提高DLI可以促进植物的花芽分化,提高果实产量和品质。

关键词: 光合有效辐射日总量, 植物生长发育, 光调控

Abstract: Daily light integral(DLI)is the total amount of photosynthetic light delivered to plants each day. In this paper,the effects of DLI on the seed germination,vegetative growth and reproductive growth of plants were discussed,thus providing reference and guidance for setting up proper DLI in plant production. Increasing DLI under low light conditions could promote the growth and development of plants. The germination rate of photoblastic seed was positively correlated with DLI. Appropriately increasing DLI could enhance the growth of root and shoot,increase plant biomass. During reproductive growth stage,increasing DLI could be conducive to flower bud differentiation and increase both fruit yield and quality.

Key words: daily light integral, plant growth and development, light control

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