Study on the Supplemental Lighting in Tomato Based on Characteristics of Photosynthetic Physiological in Different Position of Leaves and Time(PDF)
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
- Issue:
- 2018年24
- Page:
- 70-74
- Research Field:
- Publishing date:
Info
- Title:
- Study on the Supplemental Lighting in Tomato Based on Characteristics of Photosynthetic Physiological in Different Position of Leaves and Time
- Author(s):
- GUO Rui; HUA Mingyan; TONG Yana; YANG Xiaoling
- (Tianjin Academy of Agricultural Sciences,Tianjin 300192)
- Keywords:
- tomato; light absorption; the light compensation point; dark respiration rate; supplemental lighting
- PACS:
- -
- DOI:
- 10.11937/bfyy.20181481
- Abstract:
- Tomato cultivated over-winter in greenhouse was used as tested material,and characteristics of light absorption in different position and photosynthetic physiological in different time were adopted to study light quality,suitable position and suitable time for supplemental lighting to enhance utilization of lighting.The results showed that peak wavelength of light absorption were in 666-664 nm of red light district and in 434-432 nm of the blue light district.The maximum light absorption was appeared in the upper leaves,which was 1.51 times and 3.23 times in 664 nm wavelength,and 1.96 times and 4.35 times in 432 nm wavelength that of the middle and the lower leaves respectively.The light compensation point and dark respiration rate during the 17：00—20：00 in the night were significantly lower than that during the 06：00—09：00 in the morning.So supplemental lighting(666-664 nm red light and 434-432 nm blue light) to upper and middle leaves and during the 17：00—20：00 was recommended.
Last Update: 2019-01-16