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
Effects of the Frequency and Duty Cycle of Pulse LED Light Sources with Different Wavelengths on Plant Photosynthetic Rate and Photocarbon Capacity
摘要
Abstract
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.关键词
全光谱/光碳能力/光合速率/PPFD/脉冲光Key words
full spectrum/photocarbon capacity/photosynthetic rate/PPFD/pulse light分类
农业科技引用本文复制引用
魏伟,李倩,宋金德,董贞芬,邹军,仝宇欣,卢大军,林金填,陈磊,房倩,吴优,匡宇涵,孙铭浩..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[J].激光生物学报,2024,33(1):48-56,9.基金项目
2021年江苏省双创博士项目(JSSCBS20211145) （JSSCBS20211145）
国家重点研发计划项目(2021YFB3501700) （2021YFB3501700）
内蒙古自治区重点研发计划项目(2022YFDZ0086) （2022YFDZ0086）
上海市"科技创新行动计划"农业科技领域项目(23N21900100) （23N21900100）
上海市"科技创新行动计划"农业科技领域项目(22N21900400,23N21900100) （22N21900400,23N21900100）
宿迁市科技项目(K202234) （K202234）
盐城市重点研发计划项目(YCBE202332).2021 Jiangsu Shuangchuang Doctor Project(JSSCBS20211145) （YCBE202332）
National Key Research and Development Plan(2021YFB3501700) （2021YFB3501700）
Inner Mongolia Autonomous Region Key Research and Development Plan Project(2022YFDZ0086) （2022YFDZ0086）
Shanghai"Science and Technology Innovation Action Plan"Agricultural Science and Technology Field Project(23N21900100) （23N21900100）
Shanghai"Science and Technology Innovation Action Plan"Agricultural Science and Technology Field Project(22N21900400,23N21900100) （22N21900400,23N21900100）
Suqian Science and Technology Project(K202234) （K202234）
Key R&D Plan in Yancheng City(YCBE202332). （YCBE202332）
