闽北柳桉种源/家系的试验研究

对建立在闽北地区4年生澳大利亚较耐寒的柳桉种源/家系试验林进行了全面调查评估.结果表明:这些种源在2004年底～2005年初的寒流袭击中仅受到轻度冻害,平均冻害指数为2级,表现出较好的抗寒性和速生性;种源间的生长量和冻害指数均不存在显著差异,但主干通直度和分枝度等性状存在差异或极显著差异;家系间生长量和通直度存在极显著差异,冻害指数差异呈现不规律性.综合评选出了优良种源和家系,为闽西北地区推广柳桉造林提供依据.

Provenance-family Trial of Eucalyptus saligna in Northern Fujian

A provenance-family trial was conducted of the growth,cold-tolerance and some other characteristics of 4-year-old Eucalyptus saligna,in which 9 provenances and 70 families included were assessed.The trial results present its good cold-tolerance during the serious cold flow occurring at the turn of 2004 and 2005, only suffering cold injury grade II.Although the growth(height,DBH and volume) and cold injury index difference was not significant among the provenances,that of the straightness and branching was obvious or significant.The growth and straightness differentiated obviously among the families while the cold-tolerance difference among the families performed irregularly in 2 test groups.As a result,some elite provenances and families were selected accordingly to assist the introduction and domestication of E.saligna in Northwest Fujian.