蔬菜Issue(11)：42-47,6.DOI:10.26924/j.cnki.sczz.2025.1105
LD不同红蓝光比例对西瓜幼苗生长、光合作用及抗氧化酶活性的影响
Effects of Different Red and Blue Light Ratios of LD on the Growth,Photosynthesis and Antioxidant Enzyme Activities of Watermelon Seedlings
摘要
Abstract
To investigate the effects of different red and blue light ratios(R∶B)from laser diodes(LD)on the growth and development of watermelon seedlings,an experiment was conducted using watermelon variety'Baiyitianwang'as the test material.Under greenhouse conditions,three red and blue light ratio treatments(9R9B,9R6B,9R3B)were set up,the growth parameters,photosynthetic performance and antioxidant enzyme activities of the seedlings were measured and analyzed with natural light as the control.The results showed that different ratios of red and blue light could promoted the growth and photosynthesis of watermelon seedlings,but had no significant effect on antioxidant enzyme activity.Specifically,under the 9R6B treatment,the stem diameter,aboveground dry weight,aboveground fresh weight,underground dry weight,seedling vigor index,variable fluorescence(Fv),maximum photochemical efficiency of PS Ⅱ(Fv/Fm)and potential photochemical efficiency of PS Ⅱ(Fv/Fo)were significantly increased at the 1-leaf stage by 35.0％,175.0％,156.8％,100.0％,133.3％,28.0％,20.3％and 51.3％compared with control,respectively.The plant height,aboveground dry weight,aboveground fresh weight,underground dry weight,seedling vigor index,chlorophyll SPAD value,initial fluorescence(Fo),maximum fluorescence(Fm),Fv,Fv/Fm and Fv/Fo were significantly increased at the 2-leaf stage by 22.7％,61.1％,33.8％,33.3％,71.4％,14.0％,13.4％,83.2％,27.6％,8.6％and 31.2％compared with control,respectively.The plant height,stem diameter,aboveground fresh weight,underground dry weight,Fo and Fm were significantly increased at the 3-leaf stage by 23.4％,30.0％,42.2％,42.9％,20.0％and 24.5％compared with control,respectively.In summary,the LD supplemental lighting with a red and blue ratio of 9∶6 can effectively promote the growth and photosynthesis of watermelon seedlings,providing an optimized solution for facility-based seedling cultivation.关键词
激光补光/光质调控/西瓜/工厂化育苗/壮苗指数/光合性能/抗氧化酶Key words
laser supplementary light/light quality regulation/watermelon/industrialized seedling production/strong seedling index/photosynthetic performance/antioxidant enzyme引用本文复制引用
王跃荣,陈鹏宇,杨贵春,赵泰然,邬红玲,王殿发,汪磊..LD不同红蓝光比例对西瓜幼苗生长、光合作用及抗氧化酶活性的影响[J].蔬菜,2025,(11):42-47,6.基金项目
吉林省农业产业技术体系项目(JARS-2024-1501) （JARS-2024-1501）
吉林省农业科技创新工程(CXGC2023RCG015). （CXGC2023RCG015）
