|Table of Contents|

Research on Seedling Growth Law of Quercus Liaotungensis Koidz(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年08期
Page:
64-68
Research Field:
Publishing date:

Info

Title:
Research on Seedling Growth Law of Quercus Liaotungensis Koidz
Author(s):
WANG Juan-tingWANG Nai-jiang
Key Laboratory of Environment and Ecology Western China,Ministry of Education,College of Forestry,Northwest Agricultural and Forestry University,Yangling,Shaanxi 712100
Keywords:
Quercus liaotungensis Koidzseedling stagebiological characteristicsbiomassgrowth law
PACS:
S 889+.3
DOI:
-
Abstract:
Taking seeds of Quercus liaotungensis Koidz of natural secondary forest as research objects,using completely randomized block design method of container seedling,the biological characteristics and growth laws of Quercus liaotungensis Koidz at seedling growth stage were studied,in order to provide the basis for natural regeneration of Quercus liaotungensis Koidz on the Loess Plateau.The results showed that the growth pattern of Quercus liaotungensis Koidz seedling emergence rate was resupinate ‘J’ type curve,namely ‘fast-slow’ growth trend,April 28th to June 28th was the main period of Quercus liaotungensis Koidz seedling emergence.In the growth process of Quercus liaotungensis Koidz seedling,40~80 days after sowing (May 18th~June 28th) the fastest growth period (2.57 cm),seedlings of high growth rate was respectively 24.83% and 19.18% of the total annual seedling growth during this period,which suggested that late spring to early summer (May 18th~June 28th) to Quercus liaotungensis Koidz seedling high aboveground growth was the fastest period of annual seedling growth on the Loess Plateau,the high growth law of Quercus liaotungensis Koidz seedling generally conformed to the growth and development law of model ‘S’.The growth law on aboveground biomass,underground biomass and total biomass of Quercus liaotungensisKoidz seedlings conformed to ‘slow-fast-slow’,which was ‘S’ type curve.Root-shoot ratio got the biggest level when 20 days after sowing 1.93±0.16,then decreased,and basically stable when 120~180 days after sowing,the root-shoot ratios were respectively 1.28±0.21,1.30±0.25,1.33±0.20,1.33±0.18 during this period.The distribution ratio of underground biomass on Quercus liaotungensis Koidz seedling was higher than aboveground.

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Last Update: 2014-08-12