中国农业科学2025，Vol.58Issue(5)：975-990,16.DOI:10.3864/j.issn.0578-1752.2025.05.012
LED补光对日光温室基质栽培草莓生产及叶片生理特性的影响
Effects of LED Supplementary Lighting on Production and Leaf Physiological Properties of Substrate-Cultivated Strawberry in Chinese Solar Greenhouse
摘要
Abstract
[Objective]The objective of this research is to clarify the effects of LED supplementary lighting on production and leaf physiological characteristics of substrate-cultivated strawberry,and develop a light control strategy for strawberry cultivation in Chinese solar greenhouses,which will provide theoretical basis and technical support for improving the quality and efficiency of strawberry cultivation in winter and spring seasons in China when solar radiation is low.[Method]Strawberry cultivar'HongYan'was grown in a Chinese solar greenhouse with substrate cultivation,and LED supplementary lighting was provided during the early stage of flower bud differentiation(lamps were installed approximately 15 cm above the canopy).The experiments were set up with different light intensity experiments(photosynthetic photon flux density(PPFD)of 254,367,and 492 μmol·m-2·s-1,corresponding to the power of 80,120 and 160 W,respectively),the different light quality experiments(red/blue 9/1,red/blue 1/1,and white light,PPFD of 360-390 μmol·m-2·s-1,with the same power of 120 W),and the different supplementary lighting duration and control strategy experiments(i.e.dynamic supplementary lighting for 10 h and continuous supplementary lighting for 5 h,referred to as DL10 and CL5 hereafter,respectively,both using 120 W white LED,PPFD of 367 μmol·m-2·s-1,lamp on/off strategy of DL10 treatment was the same as the light intensity and quality experiments,lamp of CL5 treatment was continuously turned on during the time period of 8:00-13:00),and the control was no supplementary lighting treatment.During the experiment,strawberry production,physiological and biochemical index of leaves and fruits,as well as the leaf photosynthetic parameters were measured,and the power usage efficiency was also analyzed.[Result]Compared with the control,all supplementary lighting treatments increased strawberry yield and accelerated harvest time by～10 d.In the light intensity experiment,the yield of 160 W treatment increased by 41.9%,which was slightly but not significantly higher than that of 80 W and 120 W treatments.In the light quality experiment,the yield of red/blue 9/1,red/blue 1/1 and white light treatments increased by 55.9%,44.1%,and 33.1%,respectively,compared to the control.In addition,the yield of DL10 treatment increased by 16%compared to CL5 treatment.Supplementary lighting increased yield due to the higher number of fruits per plant.Supplementary lighting reduced fruit water content and increased leaf thickness,but had no significant effect on leaf physiological and biochemical parameters.Supplementary lighting in the morning and afternoon significantly improved stomatal conductance,which was beneficial for photosynthesis.However,in the light intensity experiment,the maximum photosynthetic capacity of the leaves treated with 160 W was significantly lower than that of 120 W treatment,and the stomatal conductance was also lower than that of the control.Regarding the power usage efficiency,red/blue 9/1(120 W)treatment was the highest,while the 160 W white light was the lowest among all treatments.The power usage efficiency of DL10 treatment was 2.6 times that of CL5 treatment.[Conclusion]Supplementary lighting can significantly improve strawberry production and accelerate harvest time in winter and spring seasons when solar light is limited,appropriate supplementary light intensity is crucial for yield formation,and supplementing with a high fraction of red light has the best effect on strawberry production,dynamic supplementary light control strategy can significantly improve the power usage efficiency.关键词
LED补光/草莓/产量/光合作用/日光温室Key words
LED supplementary lighting/strawberry/yield/photosynthesis/Chinese solar greenhouse引用本文复制引用
张涵,张玉琪,黎景来,徐虹,李维环,李涛..LED补光对日光温室基质栽培草莓生产及叶片生理特性的影响[J].中国农业科学,2025,58(5):975-990,16.基金项目
国家重点研发计划(2022YFB3604604) （2022YFB3604604）
