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三倍体毛白杨无性系叶片养分含量的季节变化(PDF)

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

Issue:
2010年02期
Page:
37-42
Column:
研究论文
publishdate:
2010-03-30

Article Info:/Info

Title:
Studies on seasonal variations of foliar nutrient contents of triploid Populus tomentosa
Author(s):
ZHANG Ying1 SUN Xiangyang1* KANG Xiangyang2
1.College of Water and Soil Conservation, Beijing Forestry University, Beijing 100083, China; 2.College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China
Keywords:
foliar nutrient contents seasonal variations triploid Populus tomentosa plantation clones stand ages
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2010.02.008
Document Code:
A
Abstract:
In order to attain a better understanding of the nutrient dynamics in Populus tomentosa, contents of N, P, K, Ca, Mg, Fe, Mn, Cu and Zn were determined in foliage in every spring, summer and autumn from 2 to 4yearold poplar plantation. And statistics were analyzed in the way of repeated measures by SPSS 17.0. The results showed that seasonal dynamics of foliar nutrient contents varied significantly. In addition, foliar P, Ca, Mg, Fe, Mn contents and N/P ratios changed remarkably with the age of the plantations. At the same time, the seasonal trends of P, K, Mn contents and N/P ratios obeyed linear models, while those of N, Ca, Mg, Fe, Cu and Zn contents followed quadratic models. Moreover, according to the tests of betweensubject effects, all nutrient elements contents varied significantly with the plantations ages. But in terms of the clone factor, the Mg and Mn contents varied significantly.

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Last Update: 2010-05-14