JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2010, Vol. 34 ›› Issue (06): 33-37.doi: 10.3969/j.jssn.1000-2006.2010.06.008

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Study on the soil nutrients status of phosphorus and potassium in stands of Phyllostachys pubescens and it’s growth efficiency

GAO Zhiqin   

  1. Faculty of Environment of Ningbo City Professional Technology College, Fenghua 315502, China
  • Online:2010-12-27 Published:2010-12-27

Abstract: We revealed the change characteristics of soil nutrients of available phosphorus and potassium in the case of high effectively management manner of moso bamboo stands, in the meantime illustrated the relation between nutrients condition and moso bamboo growth. The results showed that there existed differences of requirement and consume on nutrients of available phosphorus and potassium that in the moso bamboo stands of different management objects. It was larger that the nutrients content or the storage of available phosphorus in the shoots producing stands than in culm’s stands. While it for the content of available potassium in the soil depth of 0—10 cm of shoot’s stands was a bitter larger than that of culm’s stands, whereas it was lower than that in the soil depth of 10—20 cm. There didn’t exist significant difference for available potassium storage between shoot’s and culm’s stands. The growth regression model of related average height or breast diameter of moso bamboo which in all experimental stands to the storage of available phosphorus of 0—20 cm was close simulated by the use of parabola equation that the orientation under the mouth, and it simulated parabola equation especially for the average height: H=-0.014 2 Xp2+0.438 6Xp+11.30 then for the breast diameter: D=-0.006 4Xp2+0.225 2Xp+8.642 8, respectively. However it appeared that related average height of moso bamboo to the storage of available potassium of soil thickness 0—20 cm was the negative linear equation: H=-0.032 5Xk+19.611, meanwhile, it showed that there didn’t existed obvious related average breast diameter to the storage of available potassium in the same soil layer. Therefore, it needs to be more anxious supplementary adequate amount of soil nutrients of phosphorus and applying appropriate application fertilizer than that of potassium nutrients in term of different management objects on moso bamboo stands in Anji.

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