本文關鍵詞：蒙古櫟與遼東櫟幼苗生長規(guī)律與生物量特征，，由筆耕文化傳播整理發(fā)布。

蒙古櫟與遼東櫟幼苗生長規(guī)律與生物量特征

Characteristics of Growth Rhythm and Biomass of Quercus mongolica and Quercus liaotungensi at Seedling Stage

[1] [2] [3] [4]

LI Yue-qiao et al（Research Institute of Forestry,Chinese Academy Forestry,Beijing 100091）

[1]中國林業(yè)科學研究院林業(yè)研究所,北京100091; [2]亞熱帶林業(yè)實驗中心,江西分宜336600; [3]國家林業(yè)局竹子中心,浙江杭州310012; [4]黑龍江省鶴北林業(yè)局營林公司,黑龍江蘿北154212; [5]河北省宣化縣林業(yè)局,河北宣化075100

文章摘要：[目的]研究蒙古櫟與遼東櫟幼苗年生長規(guī)律、生物量特征及種間差異。[方法]通過對同一環(huán)境條件下蒙古櫟與遼東櫟幼苗生長和生物量性狀指標的測定、分析,研究2樹種幼苗年生長規(guī)律、生物量特征及種間差異。[結果]蒙古櫟與遼東櫟幼苗苗高、地徑年生長規(guī)律十分相似,幼苗苗高年生長規(guī)律總體上呈＂S＂型曲線生長,而地徑的年生長過程表現(xiàn)為先快后慢的生長規(guī)律;蒙古櫟與遼東櫟幼苗苗高、地徑均以春末夏初生長最快,但前者速生期略晚于后者。蒙古櫟與遼東櫟幼苗苗高生長量分別為12.23和12.29cm,主根長分別為35.71和34.20cm;蒙古櫟與遼東櫟幼苗均以側根數(shù)目在＂0～5根＂組別的幼苗比例最大,分別占總苗數(shù)的45.45%和58.97%;蒙古櫟與遼東櫟幼苗在苗高、主根長、苗高/主根長、側根數(shù)、根徑粗5個性狀間均無顯著性差異;蒙古櫟幼苗單株生物量均值是遼東櫟幼苗的1.47倍;蒙古櫟與遼東櫟幼苗各器官中生物量均為根部〉葉部〉莖部,2者種間幼苗生物量在各器官中的分布比例無顯著性差異。[結論]該研究可為蒙古櫟與遼東櫟種間遺傳分化、苗期撫育管理及過渡區(qū)造林樹種選擇研究提供科學依據(jù)。

Abstr：[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.

文章關鍵詞：

Keyword：:Quercus mongolica Quercus liaotungensi Seedling stage Growth characters Biomass

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課題項目：財政部林業(yè)公益性行業(yè)專項“新型木本生物質(zhì)資源培育及開發(fā)利用研究”項目（201004001）;鳴謝 本研究是在導師王濤院士指導下完成的,并得到了北京艾比蒂研究開發(fā)中心工作人員的大力支持,特此致謝.

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  本文關鍵詞：蒙古櫟與遼東櫟幼苗生長規(guī)律與生物量特征，由筆耕文化傳播整理發(fā)布。