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Effects of Supplemental Red and Blue Lights During Different Production Stages on Lettuce Growth and Quality(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年24
Page:
89-95
Research Field:
Publishing date:

Info

Title:
Effects of Supplemental Red and Blue Lights During Different Production Stages on Lettuce Growth and Quality
Author(s):
HUANG Xinli1; ZOU Zhirong1; TAKAGAKI Michiko2; LU Na2; DING Juanjuan1
1.College of Horticulture,Northwest A & F University,Yangling,Shaanxi 712100;2.Faculty of Horticulture,Chiba University,Matsudo,Japan 271-8510
Keywords:
red and blue light; lettuce; supplemental lighting; growth; nutrition quality
PACS:
-
DOI:
10.11937/bfyy.20172060
Abstract:
Romaine lettuce was used as test material,growth stages of romaine was divided into three stages,seedling period,early growth stage (A) and late growth stage(B),and each period was 14 days.Supplemental red (R),blue (B) LED light based on the fluorescent lamp (FL) was applied during A and B stage.Five treatments were set,the fluorescent lamps applied during A and B (FL),which was the control;supplemental red light during both A and B period(FLRR);supplemental red light during A period and supplemental blue light during B period(FLRB);supplemental blue light during A period supplemental red light during B period(FLBR);supplemental blue LED light on both A and B period (FLBB).The growth and nutrition quality parameters of lettuce were determined.The results showed that supplemental light during A period was more impactful than during B period.Supplemental blue light in A period promoted dry biomass to accumulated in B period.Under FLBR treatment,the increase of dry weight was the highest,significantly higher than that of the FL,FLRR and FLRB,respectively 27.2%,25.6% and 20.3%.The vitamin C content of FLBR was significant lower than FLBB and FL by 12.0% and 13.3%.Supplemental red and blue LED light based on fluorescent light was able to respectively decrease the content of nitrate 34.3%,50.8%,37.3% and 32.6%.

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Last Update: 2017-12-29