摘要
【目的】研究不同LED株间补光对温室番茄产量、干物质分配及光合作用的影响。【方法】在日光温室中以番茄品种‘瑞粉882’为试材,以红蓝光LED灯管为补光光源,设置3种红(R)蓝(B)光比例(R/B=4∶1、R/B=7∶1、R/B=9∶1),以未补光植株为对照(CK),研究不同红蓝光比例株间补光对番茄产量、干物质分配及光合作用的影响。【结果】与对照相比,3种红蓝光比例株间补光处理均显著提高番茄产量,R/B=4∶1、R/B=7∶1、R/B=9∶1处理较对照分别增产25.9%,28.5%和22.7%。3种红蓝光比例株间补光处理地上部分总干质量较对照分别提高了26.2%,30.4%和28.4%,果实干质量较对照分别提高了31%,38.6%和36%,株间补光处理番茄果实干物质分配比例较对照增加,但差异不显著。株间补光提高了番茄叶片最大净光合速率和波长在500~650nm的光吸收率;降低了叶片的比叶面积。【结论】株间补光显著提高了番茄地上部分总干质量及果实产量,改善了冠层光分布,提高了光合能力,但不同红蓝光处理间差异不显著。
【Objective】This study investigated the effects of different LED interlighting on tomato yield,photosynthesis and dry matter production in solar greenhouse.【Method】Tomato cultivar ＂Ruifen882＂was planted in a solar greenhouse and three red/blue light ratios（R/B=4∶1,R/B=7∶1 and R/B=9∶1）and no LED interlighting（CK）were applied.【Result】Compared with CK,interlighting treatments significantly increased tomato yield with the increases of 25.9%,28.5%and 22.7%for R/B=4∶1,R/B=7∶1 and R/B=9∶1,respectively.The total aboveground dry matter amounts were increased by 26.2%,30.4% and 28.4% and the fruit dry weights were increased by 31%,38.6% and 36%in the R/B=4∶1,R/B=7∶1 and R/B=9∶1 treatments,respectively.LED interlighting insignificantly increased dry mass to fruit ratio compared with CK.Interlighting treatments also increased the maximum net photosynthetic rate and light absorption at the wavelength of 500-650 nm for the leaves close to the light source.【Conclusion】Interlighting treatments significantly increased tomato production,canopy light distribution and photosynthetic capacity without significant difference among treatments.
作者
闫文凯
张雅婷
张玉琪
杨其长
李涛
YAN Wenkai;ZHANG Yating;ZHANG Yuqi;YANG Qichang;LI Tao(Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing 100081,China)
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2018年第7期132-138,146,共8页
Journal of Northwest A&F University(Natural Science Edition)
基金
国家重点研发计划项目(2017YFB0403900)
