| 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500~650 nm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。 |
| 关键词: LED株间补光 番茄 光合作用 干物质分配 日光温室 |
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| 基金项目:国家重点研发计划项目（2017YFB0403900） |
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| Effects of LED interlighting on yield and photosynthesis of tomato in solar greenhouse |
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YAN Wenkai,ZHANG Yating,ZHANG Yuqi,et al
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| Abstract: |
| 【Objective】This study investigated the effects of different LED interlighting on tomato yield,photosynthesis and dry matter production in solar greenhouse.【Method】Tomato cultivar “Ruifen 882” 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. |
| Key words: LED interlighting tomato photosynthesis dry matter distribution greenhouse |
