不同波长脉冲LED光源的频率和占空比对植物光合速率和光碳能力的影响

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国家科技期刊平台
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中文摘要：本文分析了脉冲发光二极管(LED)光源的研究进展,制作了不同波长的脉冲LED光源面板;测量了灯面板下方25 cm处光合光子通量密度(PPFD)随光源波长、频率和占空比的变化;在固定光源工作周期条件下,研究了光合速率随频率的变化,发现在不同波长下,植物光合速率具有最佳频率;在固定光源频率条件下,研究了光合速率随占空比的变化,发现在不同的占空比下,植物的光合速率有其最佳的占空周期;由于在固定频率或固定占空比条件下,其PPFD不能随着占空比和频率的变化而保持恒定,因此提出了光碳能力的概念(光碳能力=光合速率 ⋅ PPFD-1=Pn⋅PPFD-1,其中Pn为光合速率,其生物学意义是一个光子能量转换多少二氧化碳分子进行光合作用);在固定光源占空比条件下,研究了光碳能力随频率的变化.每种光源,均有对应优化的频率,对应得到此种光源下最大的光合速率;每种光源,均有对应优化的频率,对应得到此种光源下最大的PPFD;每种光源,均有对应优化的频率,对应得到此种光源下最大的光碳能力.本文通过提出光碳能力来衡量植物光照参数与碳减排量之间的对应的关系,希望以后光学设计可以通过优化此参数获得最优化的光照条件来获得最经济的碳减排量.

外文标题：Effects of the Frequency and Duty Cycle of Pulse LED Light Sources with Different Wavelengths on Plant Photosynthetic Rate and Photocarbon Capacity

外文摘要：This article analyzes the research progress of pulsed light emitting diode(LED)light sources and aims to produce different wavelength pulse LED light source light panels,and to measure the variation of photosynthetic photon flux density(PPFD)at 25 cm below the lamp panel with the change of wavelength,frequency,and duty cycle of the light source.Under the condition of fixed light source duty cycle,the variation of photosynthetic rate with frequency was studied,and it was found that under different wavelengths,the plant photosynthetic rate had its respective optimized frequency;under the condition of fixed light source frequency,the variation of photosynthetic rate with duty cycle was studied,and it was found that under different duty cycles,the plant photosynthetic rate had its respective optimized duty cycle.Because its PPFD cannot be kept constant with the change of duty cycle and frequency under the condition of fixed frequency or duty cycle,the concept of photocarbon capa-bility is proposed with photocarbon capability=photosynthetic rate⋅PPFD-1=Pn⋅PPFD-1,its biological significance is how many carbon dioxide molecules can be stimulated by a photon energy to photosynthesis.Under the condition of fixed light source duty cycle,the variation of photocarbon capacity with frequency change was studied.Each type of light source has a corresponding optimized frequency,corresponding to the maximum photosynthetic rate under this type of light source;each type of light source has a corresponding optimized frequency,corresponding to obtaining the maximum PPFD under this type of light source;each type of light source has a corresponding optimized frequency,which corresponds to the maximum photocarbon capacity under this type of light source.This article proposes a method to measure the corresponding relationship between plant lighting param-eters and carbon reduction by proposing light carbon capacity.It is hoped that in the future,optical design can achieve the most economical carbon reduction by optimizing this parameter to obtain the optimal lighting conditions.

外文关键词：

full spectrumphotocarbon capacityphotosynthetic ratePPFDpulse light

作者：

魏伟、仝宇欣、卢大军、林金填、陈磊、房倩、吴优、匡宇涵、孙铭浩、李倩、宋金德、董贞芬、邹军

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作者单位：

盐城师范学院,盐城 224007

中国农业科学院农业环境与可持续发展研究所,北京 100081

中实创科技广东公司,东莞 523000

旭宇光电(深圳)股份有限公司,深圳 518101

江苏杏杰科技有限公司,盐城 224000

宿迁学院,宿迁 223600

上海应用技术大学,上海 201418

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关键词：

全光谱光碳能力光合速率 PPFD 脉冲光

基金：

2021年江苏省双创博士项目国家重点研发计划项目内蒙古自治区重点研发计划项目上海市"科技创新行动计划"农业科技领域项目上海市"科技创新行动计划"农业科技领域项目上海市"科技创新行动计划"农业科技领域项目宿迁市科技项目盐城市重点研发计划项目

项目编号：

JSSCBS202111452021YFB35017002022YFDZ008623N2190010022N2190040023N21900100K202234YCBE202332

出版年：

2024

DOI：

10.3969/j.issn.1007-7146.2024.01.006

激光生物学报

中国遗传学会

激光生物学报

CSTPCD

影响因子：0.378

ISSN：1007-7146

年,卷(期)：2024.33(1)

参考文献量25