| 摘要: |
| 针对自然光植物工厂空间高效利用的问题，采用意大利奶油生菜为研究对象，探究自然光植物工厂多层立体栽培条件下不同栽培层间光照、温度、湿度等环境差异及补光对生菜产量和品质的影响。结果表明：栽培架中层平均太阳总辐射强度是上层的25.15%~55.42%，下层平均太阳总辐射强度是上层的22.66%~37.46%；不同层间温度相差4.8~7.2℃。不同层湿度差异为37.5%~43.9%。补光可以提高栽培层间的光照强度，改善光照分布状况，改变生菜生长形态，促进叶片伸展和根系生长。与不补光处理相比，补光后中层和下层生菜的产量分别提高了35.8%和24.7%，干物质量增加了39.7%和36.7%，可溶性蛋白含量提高了9.42%和9.24%，硝酸盐含量降低了10.75%和6.75%，但与对照相比，补光后对生菜叶绿素和可溶性糖含量并没有显著性的变化。立体栽培层间补光能够改善层间光照环境，使光照分布更加均匀，促进干物质积累，显著提高生菜产量和品质。 |
| 关键词: 生菜 立体栽培 太阳辐射强度 人工补光 |
| DOI：10.11841/j.issn.1007-4333.2019.01.13 |
| 投稿时间：2018-05-14 |
| 基金项目:国家"十三五"重点研发计划（2017YFB0403900） |
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| Effects of increased stereo multi-layer artificial light in natural light plant factory on yield and quality of lettuce |
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LIU Qingxin, FANG Hui, LI Zonggeng, YANG Qichang, WEI Lingling, CHENG Ruifeng
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| (Institute of Environment and Sustainable Development in Agriculture/Key Laboratory of Energy Conservation and Waste Management of Ministry Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100081, China) |
| Abstract: |
| To improve space utilization efficiency in natural light plant factory, taking Italy creamy lettuce as research object, the effects of increased stereo multi-layer artificial light on the light, temperature and humidity in different cultivation layers of natural light plant factory. The effects of light on yield and quality were investigated. The results showed that the average solar radiation intensity in the middle layer of the cultivation frame was 25.15%-55.42% of the upper layer, and the average solar radiation intensity in the lower layer was 22.66%-37.46% of the upper layer, and the temperature difference between different layers was 3.5 -5.6℃. The humidity difference among three layers was 43.9%-37.5%. Supplemental light increased the light intensity of cultivated layer, improved the distribution of light, changed the growth form of lettuce, and promoted leaf extension and root growth. The yield of lettuce in middle and lower layer increased by 35.8% and 24.7%, the quality of dry matter increased by 39.7% and 36.7%, the content of soluble protein increased by 9.42% and 9.24%, the content of nitrite decreased by 10.75% and 6.75%. However, there was no significant effect on the chlorophyll and soluble sugar content of lettuce. This study showed that the interlayer light supplementing could improve the interlayer light environment, the distribution of light was more uniform, the accumulation of dry matter was promoted, and the yield and quality of lettuce were greatly improved. |
| Key words: lettuce stereo cultivation solar radiation artificial lighting |
