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植物研究 ›› 2010, Vol. 30 ›› Issue (1): 51-56.doi: 10.7525/j.issn.1673-5102.2010.01.011

• 论文 • 上一篇    下一篇

不同氮素形态比例对五味子幼苗生长特性的影响

徐海军1,3;孙广玉3;张悦1;周志强2*   

  1. 1.黑龙江省科学院自然与生态研究所,哈尔滨 150040;2.东北林业大学森林植物生态学教育部重点实验室,哈尔滨 150040;3.东北林业大学生命科学学院,哈尔滨 150040
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-01-20 发布日期:2010-01-20
  • 通讯作者: 周志强
  • 基金资助:
     

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
  • Supported by:
     

摘要: 以2年生五味子苗木为试验材料,在田间条件下,施以铵态氮(NH+4-N)和硝态氮(NO-3-N)不同比例,分析了叶片可溶性蛋白、叶绿素含量、根系及茎叶中全氮含量、生物量等季节的动态变化规律,探讨了不同氮素形态比例对五味子苗木生长的影响。结果表明,五味子苗木在不同生长时期对不同氮素形态的吸收和利用存在明显差异,NH+4-N和NO-3-N对五味子幼苗生长有显著的联合效应。在五味子生长前期,五味子主要以吸收和同化NH+4-N为主,并以铵态氮和硝态氮比例为75∶25时地上部生物量积累较多;而在五味子生长的中后期,五味子主要以NO-3-N吸收和同化为主,并以铵态氮和硝态氮比例为25∶75时地上部生物量积累较多。

关键词: 五味子, 铵态氮, 硝态氮, 生物量

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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