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《Journal of Anhui Agricultural Sciences》 2011-21
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Characteristics of Growth Rhythm and Biomass of Quercus mongolica and Quercus liaotungensi at Seedling Stage

LI Yue-qiao et al(Research Institute of Forestry,Chinese Academy Forestry,Beijing 100091)  
[Objective] The aim was to study the characteristics of growth,biomass and their differences of Quercus mongolica(MS) and Quercus liaotungensi(LS) at seedling stage.[Method]Through determining and analyzing seedlings growth and biomass characters indexes of Quercus mongolica(MS) and Quercus liaotungensi(LS) under the same environment condition,the growth and biomass indexes as well as and their differences of two kinds of seedlings were studied.[Result]The annual growth rhythm of MS and LS was basically consistent.The annual growth process of seedling height was the S-shaped,and the ground diameter were the"fast followed by slow"type.The growth period of seedling height and ground diameter in MS and LS were both for the late spring and early summer,whenas the beginning of fast growing period of the former was a slightly later than the later.The increment of height growth of MS and LS were lower and they were 12.23 and 12.29 cm,respectively,but there were a higher increment of ground diameter and were 35.71 and 34.20 cm,respectively.The group that MS and LS had 0-5 lateral roots in MS and LS makes the biggest percentage as 45.45% and 58.97% in all seedlings respectively.No significant difference existed between MS and LS in such index as seedling height,the ratio of seedling height,the main root length,the lateral root number and ground diameter.The biomass of MS was 1.7 times than that of LS.Both MS and LS demonstrated a trend of root leaf stem in biomass.[Conclusion]The results of this research could provide a sound basis for management of seedling stage,genetic divergence and selection of suitable plant species in transition area of MS and LS.
【Fund】: 财政部林业公益性行业专项“新型木本生物质资源培育及开发利用研究”项目(201004001)
【CateGory Index】: S792.186
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