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    郭文冰, 赵奋成, 钟岁英, 邓乐平, 谭志强, 容仁立, 李振, 李义良, 吴惠姗. 湿地松半同胞家系对轮伐中期追肥的生长响应[J]. 华南农业大学学报, 2017, 38(1): 90-95. DOI: 10.7671/j.issn.1001-411X.2017.01.015
    引用本文: 郭文冰, 赵奋成, 钟岁英, 邓乐平, 谭志强, 容仁立, 李振, 李义良, 吴惠姗. 湿地松半同胞家系对轮伐中期追肥的生长响应[J]. 华南农业大学学报, 2017, 38(1): 90-95. DOI: 10.7671/j.issn.1001-411X.2017.01.015
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    GUO Wenbing, ZHAO Fencheng, ZHONG Suiying, DENG Leping, AN Zhiqiang, RONG Renli, LI Zhen, LI Yiliang, WU Huishan. Growth response of Pinus elliottii open pollinated families to mid-rotation fertilization[J]. Journal of South China Agricultural University, 2017, 38(1): 90-95. DOI: 10.7671/j.issn.1001-411X.2017.01.015
    Citation: GUO Wenbing, ZHAO Fencheng, ZHONG Suiying, DENG Leping, AN Zhiqiang, RONG Renli, LI Zhen, LI Yiliang, WU Huishan. Growth response of Pinus elliottii open pollinated families to mid-rotation fertilization[J]. Journal of South China Agricultural University, 2017, 38(1): 90-95. DOI: 10.7671/j.issn.1001-411X.2017.01.015
    shu

    湿地松半同胞家系对轮伐中期追肥的生长响应

    Growth response of Pinus elliottii open pollinated families to mid-rotation fertilization

      摘要
    • 摘要:
      目的 分析轮伐中期施肥处理对湿地松Pinus elliottii半同胞家系生长的影响，比较磷肥与石灰的肥效差异。
      方法 对13年生的湿地松半同胞子代测定林设置氮钾(对照)、氮钾+钙镁磷肥、氮钾+石灰3种施肥处理，分析了土壤和针叶的养分以及湿地松生长性状。
      结果 轮伐中期施肥对株高、胸径及单株材积均有显著性影响，处理与家系的互作效应不显著。与对照相比，钙镁磷肥和石灰均促进了株高的生长，分别提高37.1%和29.5%；石灰可以促进材积增量，与对照相比，材积增量提高了22.5%，且石灰处理的胸径增长高于钙镁磷肥处理。
      结论 轮伐中期可通过追施氮钾+石灰增加湿地松出材量；石灰对湿地松生长的促进可能与磷有关，与钙无关。

       

      Abstract:
      Objective To study the effect of mid-rotation fertilization on the growth of Pinus elliottii open pollinated families, and compare the differences of P fertilizer and liming.
      Method Three different treatments (NK as control, NK+Ca-Mg-P, NK+liming) were conducted in a 13-year P. elliottii open pollinated progeny test stand. The growth characteristics of P. elliottii were examined before and after fertilization, and the nutrition contents were analyzed in soil and needle.
      Result Mid-rotation fertilization had a significant effect on the increments of height, DBH and volume, while the interaction effect between family and treatment was not significant. Compared to NK treatment, NK+Ca-Mg-P and NK+liming significantly increased the height increment by 37.1% and 29.5% respectively, while the latter increased the volume increment by 22.5%. Meanwhile, the DBH increment of NK+liming treatment was higher than that of NK+Ca-Mg-P treatment.
      Conclusion Liming with NK fertilizers can increase the timber yield of P. elliottii. The promotive effect of liming on growth of P. elliottii might be related to P instead of Ca.

       

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