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两个杨树无性系中大量元素含量的年变化(PDF)

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

Issue:
2006年01期
Page:
49-52
Column:
研究论文
publishdate:
2006-01-20

Article Info:/Info

Title:
Annual Dynamics of Macro-element Contents in Various Biological Components of Poplar Clones
Article ID:
1000-2006(2006)01-0049-04
Author(s):
LI Hai-ling12 WANG Qi1 FANG Sheng-zuo1*
1. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China; 2. College of City and Environment Shanxi Normal University, Linfen 041000, China
Keywords:
Poplar plantation Macro-elements Nutrient content Annual dynamics
Classification number :
S718.4
DOI:
10.3969/j.jssn.1000-2006.2006.01.012
Document Code:
A
Abstract:
Poplar is one of the dominant trees which developed very quickly in China in recent years. It is important to study annual dynamics of macro-element contents in order to improve the ability of poplar plantation nutrient management. Annual dynamics of macro-element contents of clone 1-69 and clone I-72 were studied. Results indicated that the value and the annual dynamics of N, P, K, Ca and Mg in different biological components of two poplar clones were similar. Among these components, annual variations of nutrient contents in leaves were the most obvious, and its variation value was 82.6% for N, 82.2% for P, 84.7% for K, 85.7 % for Ca, and 88.7% for Mg respectively. The rule of macro-element accumulated in one-year-old and two-year-old branch was similar, dilute effects of nutrient content existed during the eugenic period of various biological components; among various biological components, mean contents of N, P, K of leaves were maximal and mean contents of Ca, Mg of one-year-old xylems were maximal. The results would provide primary data for nutrient management and productivity maintenance of poplar plantation.

References

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Last Update: 2013-05-20