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首页> 外文会议>International Forum on Electrical Engineering and Automation >Effect of Supplemental Light with Different Spectral LEDs on the Growth of Tomato Seedlings in North Greenhouse
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Effect of Supplemental Light with Different Spectral LEDs on the Growth of Tomato Seedlings in North Greenhouse

机译：不同光谱LED对北温室番茄幼苗生长的补充光的影响

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The application of light emitting diodes (LEDs) for supplemental lighting is expected to increase quality of tomato seedlings in north greenhouse with less cost. Experiments were carried out to investigate the effect of supplemental lighting by LEDs with two different spectral qualities (blue, red and the combination of the two) on the growth of tomato seedlings. Plants were grown under different spectral light treatments for a month. The photosynthetic photon flux (PPF, 400-700 nm) at the top of plants was adjusted to 100μmol m~(-2) s~(-1). LEDs were used during the overnight period. The lighting was provided at a PPF level of 50μmol m~(-2) s~(-1). The air temperatures were kept between 18 and 26°C. The relative humidity was maintained at 60% throughout the periods. The results showed that the growth of tomato seedlings was affected by the light quality of the overnight lighting. Particularly, Chlorophyll fluorescence parameters of tomato seedlings in solar greenhouse has change significantly, especially the value of Φ_(psII) parameter increased significantly under the combination of red and blue LEDs. It demonstrates that light energy conversion efficiency could be increased in this method.
机译：用于补充照明发光二极管（LED）的应用预计将增加的番茄在北温室苗质量更低的成本。进行实验来研究补光由LED与两个不同的频谱质量上的番茄幼苗生长的影响（蓝色，红色和两者的组合）。植株在一个月不同的光谱光治疗生长。光合光子通量（PPF，400-700纳米）在植物的顶部调节至100μmol米〜（-2）S〜（-1）。发光二极管在过夜期间被使用。照明在为50μmol米〜的PPF水平设置（-2）S〜（-1）。该空气的温度被保持18和26℃之间。相对湿度保持在60％整个周期。结果表明的番茄幼苗的生长受过夜照明的光质量。特别是，番茄在太阳能温室苗具有变化显著，特别是Φ_（PSII）参数的值叶绿素荧光参数的红色和蓝色LED的组合下显著增加。这表明，光能转换效率可以在这个方法来增加。

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