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Bulletin of Botanical Research ›› 2019, Vol. 39 ›› Issue (1): 54-60.doi: 10.7525/j.issn.1673-5102.2019.01.007

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Effects of Different Nitrogen Level on Growths of Moringa oleifera Seedling under Northern Facilities of China

XU Hai-Jun1,2, CHENG Xin-Yu1, WANG Xiao-Fei1, GUAN Xiang-Jun1   

  1. 1. Daqing Branch of Heilongjiang Academy of Sciences, Daqing 163319;
    2. Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040
  • Received:2018-09-03 Online:2019-01-15 Published:2019-01-31
  • Supported by:
    Heilongjiang Academy of Sciences Scientific Research Fund(KY2016DQ01)

Abstract: In order to clarify the rule of Moringa oleifera for nitrogen demand on fast-growing period, the experiment was carried out under five nitrogen level gradients applied on Moringa seedling, and to study the difference of characteristics on the growth of height, ground diameter, the contents of N, P, K in leaf, the contents of blade pigment and photosynthetic characteristics. The result showed that the height, ground diameter, N, P, chla, total pigment, carotenoid in leaf and photo-quantum efficiency rose first and descended later accompanied with nitrogen level increasing, while the light compensation point showed the contrary. Plant height growth was significantly correlated with leaf P and chla, and ground diameter was significantly correlated with dark respiration rate and leaf K content. When the nitrogen level was in 30 g·ind.-1(N3), M.oleifera seedling growth was the fastest, the plant nutrient status was better, and the utilization rate of light was the best.

Key words: Moringa oleifera, facility cultivation, nitrogen level, growth of seedling, photosynthetic characteristics

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