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Position: Home > Articles > Growth Rule and Adaptability of Eucalyptus dunnii in Northern of Fujian Journal of Northwest Forestry University 2010,25 (2) 50-55

邓恩桉在闽北生长规律与适应性探讨

作者：

郭祥泉;郭祥堆

单位：

福建省永安市第六中学;福建省三明市林业局

关键词：

邓恩桉;闽北;物候;生长规律;适应性

摘要：

通过对闽北当年造林邓恩桉幼树高与地径的生长进行定期的观察,总结了该树种在闽北的年节律生长、幼树高、地径的生长规律,分析了年气候变化对该树种幼树高、地径生长的影响和幼树高、地径年生长2个生长高峰发生的原因,同时调查了当年不同地块造林的生长适应性。结果表明,当年生该树种的树高、地径生长分布表现为正态分布,个体生长性状早期表现较大的分化,优势个体在早期已表现显著的遗传优势,适宜早期进行优良表型选择。在抗寒适应性方面,通过冬季2次不同时期霜冻胁迫调查表明,不同个体对低温胁迫表现不同的适应性,抗寒性好的个体,低温胁迫对生长影响较小,仍保持缓慢的生长势,一般抗寒性的,表现为嫩叶叶色变红,而抗寒性较差的表现为顶芽冻死,末梢嫩叶冻坏;不同抗寒性的分化也适宜于耐寒性状的早期选择。

译名：

Growth Rule and Adaptability of Eucalyptus dunnii in Northern of Fujian

作者：

GUO Xiang-quan1,GUO Xiang-dui2(1.The Forest Bureau of Sanming City of Fujian Province,Sanming,Fujian 365000,China;2.The Sixth Middle School of Yong'an City of Fujian Province,Yongan,Fujian 366000,China)

关键词：

Eucalyptus dunnii;Northern of Fujian Province;phenamenon;growth law;adaptability

摘要：

The growth and changes of height and ground-diameter of Eucalyptus dunnii afforestated during the current year were observed in the northern Fujian.The phenamenon and growth rule of height and ground-diameter of E.dunnii were investigated.The influence of climate change was studied on the growth of height and ground-diameter.The causes of two growth peaks of height and ground-diameter were analyzed.The growth adaptability of was investigated in different planting areas in the current year.The results indicated that the distribution of height and ground-diameter of the stands of E.dunnii in the current afforestation year fitted on the normal distribution,and emerged the obvious differentiation in the early period.The genetic dominance of dominant individual was emerged in the early growth period and it fitted on selection of elite behavior type.The adaptability to freezing and frost was investigated in two periods in the current year.It indicated that the different individuals behaved the different adaptabilities to the lower temperature stress.Cold stress had possessed little impact on those with better coldness resistance.Their growth slow potential maintained.For those that showed ordinary coldness resistance characteristics,their leaves color became red.For those with poor coldness resistance,their buds and tender leaves died.The obvious differentiation of cold-hardness fitted on the early period selection of cold-hardness.

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邓恩桉在闽北生长规律与适应性探讨

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