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Volume 16 Issue 2
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Article Navigation >  Forest Research  > 2003 >  16(2): 171-176

Citation:
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A Study on Effects of Phosphorus Fertilization in Ginkgo Seedlings

  • 1.

    Department of Life Science, Zhejiang Forestry College, Linan311300, Zhejiang, China

  • 2.

    College of Forest Resources and Environment, Nanjing Forestry University, Nanjing210037, Jiangsu, China

  • 3.

    Forest Bureau of Anji County, Zhejiang Province, Anji313300, Zhejiang, China

  • Received Date: 2002-09-11
  • Based on pot experiment, effects of phosphorus fertilization on growth and physiological indexes and phosphorus content in leaves of two year old ginkgo seedlings were studied. The results are as follows: (1)With increasing levels of phosphorus supply from 0.0 to 3.0 g P2O5 /pot, the growth and physiological indexes in ginkgo seedlings increased, while with increasing levels of phosphorus over 3.0 g P2O5/pot all of the indexes decreased. (2)The phosphorus content in leaves went up with increasing levels of phosphorus supply from 0.0 to 3.0 g P2O5/pot but went down gradually with further phosphorus supply from 3.0 to 4.0 g P2O5/pot. (3)There are quadric relationships between growth indexes and phosphorus supplies. Based on this, regression models were established and proper application amount of phosphorus from 2.11 to 2.38 g P2O5/pot for two year old ginkgo seedlings was calculated.
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A Study on Effects of Phosphorus Fertilization in Ginkgo Seedlings

  • 1. Department of Life Science, Zhejiang Forestry College, Linan311300, Zhejiang, China
  • 2. College of Forest Resources and Environment, Nanjing Forestry University, Nanjing210037, Jiangsu, China
  • 3. Forest Bureau of Anji County, Zhejiang Province, Anji313300, Zhejiang, China
  • Received Date: 2002-09-11

Abstract: Based on pot experiment, effects of phosphorus fertilization on growth and physiological indexes and phosphorus content in leaves of two year old ginkgo seedlings were studied. The results are as follows: (1)With increasing levels of phosphorus supply from 0.0 to 3.0 g P2O5 /pot, the growth and physiological indexes in ginkgo seedlings increased, while with increasing levels of phosphorus over 3.0 g P2O5/pot all of the indexes decreased. (2)The phosphorus content in leaves went up with increasing levels of phosphorus supply from 0.0 to 3.0 g P2O5/pot but went down gradually with further phosphorus supply from 3.0 to 4.0 g P2O5/pot. (3)There are quadric relationships between growth indexes and phosphorus supplies. Based on this, regression models were established and proper application amount of phosphorus from 2.11 to 2.38 g P2O5/pot for two year old ginkgo seedlings was calculated.

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