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四川大叶樟一年生播种苗年生长规律的初步研究(PDF)

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

Issue:
1989年04期
Page:
1-8
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
A PRELIMINARY STUDY ON ANNUAL GROWTH OF CINNAMOMUN PLATYPHYLLUM ONE-YEAR-OLD SEEDLINGS
Article ID:
1000-2006(1989)04-0001-08
Author(s):
Peng Fongren & Huang Bao long
Department of Forestry
Keywords:
Cinnamomum p laiyphyllum Seedling-height growth Collar diameter growth Root growth Net photosynthetic rate (NPR).
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1989.04.001
Document Code:
A
Abstract:
Investigations have been made on the seasonal growth pattern of seedling height, collar diameter roots of Cinnamomum platyphylium one-year-old seedlings. The results are as follows.Growth stages of the seedling height can be divided by using cluster analyses of series samples. Logistic curves have been obtained to simulate the growth process of the height. There exists a positive relationship between rates of the height growth and rates of the leaf areas increment. The nitrogen (N) concentrations in the leaves have the first important influence on the height growth, phosphorus (p) concentration is the second, the last is potassium(k) concentration. The growth rate of height is closely correlated to air temperature. The ten-day changes of collar diameter growth accord with the ten-day fluctuation of rainfall. The growth of collar diameter is positively correlated to net photo-synthetic rate (NPR) of leaves multiplied by total-leave-area. It was found that there exists an alternative growth rhythm between roots growth and above-ground growth. Length of main root has an obvious effect on the spread of lateral.

References

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Last Update: 1900-01-01