CAJ | 학술논문

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.
통과대민북당년조림산은안유수고여지경적생장진행정기적관찰,총결료해수충재민북적년절률생장、유수고、지경적생장규률,분석료년기후변화대해수충유수고、지경생장적영향화유수고、지경년생장2개생장고봉발생적원인,동시조사료당년불동지괴조림적생장괄응성.결과표명,당년생해수충적수고、지경생장분포표현위정태분포,개체생장성상조기표현교대적분화,우세개체재조기이표현현저적유전우세,괄의조기진행우량표형선택.재항한괄응성방면,통과동계2차불동시기상동협박조사표명,불동개체대저온협박표현불동적괄응성,항한성호적개체,저온협박대생장영향교소,잉보지완만적생장세 ,일반항한성적,표현위눈협협색변홍,이항한성교차적표현위정아동사,말소눈협동배;불동항한성적분화야괄의우내한성상적조기선택.
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.