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杨树无性系的磷营养效率差异(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2001年02期
Page:
14-18
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
Interclonal Differences in Phosphorus Efficiency of Poplar
Article ID:
1000-2006(2001)02-0018-01
Author(s):
ZHANG Huan-chao XU Cheng-kai WANG Gai-ping XU Xi-zeng
College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037,China
Keywords:
Poplar Clone Phosphorus efficiencys Biomass
Classification number :
*
DOI:
10.3969/j.jssn.1000-2006.2001.02.004
Document Code:
A
Abstract:
The differences in phosphorus efficiency among 8 hydrid poplar clones of S17, (Populus deltoides×P. cathayana), S19, (Populus deltoides×P. cathayana), 105 (Populus deltoides×P. simonii), 106(Populus deitoides×P. simonii ), I- 69 (Populus deltoides Bartr. cv. Lux), 797 (Populus deltoides×P. euramericana ), 1388 (Populus deltoides×P. euramericana), and 3244 (Populus deltoides ) were studied by the method of soil culture in greenhouse. The results showed that the phosphorus efficiencies varied among the treated poplar clones, as indicated with the above- ground biomass of clones under P deficient stress. Clone S17,S19,and 105 were efficient phosphorus absorbers and ranked in Grade A of high phosphorus efficiency because of their large biomasses of 55. 15, 48. 28 and 49. 25 g/seedling, respectively; and comparative small biomass decrements (less than 30% ). Similarly, the phosphorus efficiencies of clone 106, 797, and I- 69 were considered as Grade C, as associated with their quite lower biomasses of 35. 45,31. 45 and 28. 35 g/seedling, respectively; and their larger biomass decrements(around 50% ) in - P treatments, in comparison with +P treatments. The biomass of 1388 and 3244 were the lowest, only 23. 05 and 23. 94 g/seedling, therefore, the most inefficient P absorbers of Grade D. None of the poplar clones was found as Grade B in this study.

References

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Last Update: 1900-01-01