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Bulletin of Botanical Research ›› 2010, Vol. 30 ›› Issue (1): 51-56.doi: 10.7525/j.issn.1673-5102.2010.01.011

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Effects of Different Nitrogen-form Proportions on the Growth of Schisandra chinensis Seedlings

XU Hai-Jun;SUN Guang-Yu;ZHANG Yue;ZHOU Zhi-Qiang*   

  1. 1.Nature and Ecology Institute,Heilongjiang Science Academy,Harbin　150040；2.Key lab. Of Forest plant Ecology,Ministry of Education,Northeast Forestry University,Harbin　150040；3.College of Life Sciences,Northeast Forestry University,Harbin　150040
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-01-20 Published:2010-01-20
  • Contact: ZHOU Zhi-Qiang
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Abstract: A field experiment was carried out to investigate the effects of different nitrogen(N)-form proportions of NH+4-N to NO-3-N on the growth of Schisandra chinensis seedlings. The soluble protein content, chlorophyll concentration in leaves, whole nitrogen content, and the seasonal regulation of biomass accumulation and distribution in roots, stems and leaves were analyzed on 2-year-old S.chinensis seedlings. The results showed that the absorbance and assimilation of different nitrogen(N) form in each growth stage of S.chinensis seedlings were significantly different. NH+4-N and NO-3-N had notable jointeffect: NH+4-N was beneficial for early growth stage of S.chinensis seedlings, when the proportion of NH+4-N and NO-3-N was 75∶25, above-ground biomass was the most; but NO-3-N was more useful in middle and late growth stages, when the proportion of NH+4-N and NO-3-N was 25∶75, the biomass was mostly distributed above ground.

Key words: Schisandra chinensis, NH+4-N, NO-3-N, biomass

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