|Table of Contents|

Effects of Different Light Intensities and Light Quality on the Growth of the Pipeline Hydroponic Lettuce

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年21
Page:
15-20
Research Field:
Publishing date:

Info

Title:
Effects of Different Light Intensities and Light Quality on the Growth of the Pipeline Hydroponic Lettuce
Author(s):
YAN Zongshan12ZHANG Xiangping2WANG Lei2YANG Shimei2MA Jinhui2XIE Jianming1
(1.College of Horticulture,Gansu Agricultural University,Lanzhou,Gansu 730000;2.Gansu Academy of Agri-engineering Technology,Wuwei,Gansu 733006)
Keywords:
lettucelight intensitylight qualitygrowth
PACS:
-
DOI:
10.11937/bfyy.20200647
Abstract:
Four Seasons Glass’ lettuce was taken as the test material.The effects of different light intensities and light qualities on the growth,quality and photosynthetic characteristics of lettuce were studied under two light intensities of 120 μmol?m-2?s-1 and 200 μmol?m-2?s-1 and two light quality ratios of 4R/B and 3R/2B/W.The results showed that the leaf number,the height of leaf,aboveground biomass,soluble sugar content and anthocyanin content deal with the 4R/B and 200 μmol?m-2?s-1 were the best,compared with the other light intensities and light qualities treatment;and there was no great differences among leaf numbers,leaf area and plant height deal with 200 μmol?m-2?s-1,3R/2B/W and 120 μmol?m-2?s-1,4R/B;with the same light intensity,dry weight,root length and root-shoot ratio of underground part deal with the 3R/2B/W were higher than that deal with by 4R/B;when the lettuce was deal with the light intensity 200 μmol?m-2?s-1 and light quality ratio 3R/2B/W,the chlorophyll content,net photosynthetic rate and stornatal conductance were the highest,no significant difference between deal with the 200 μmol?m-2?s-1,4R/B.So light intensity 200 μmol?m-2?s-1 and light quality ratio 4R/B were the suitable conditions for the lettuce to grow,and during the production,the esr luminaire of 4R/B could choose to cut cost with the intensity lowering.

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Last Update: 2021-01-14