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对4年7个月生三种密度(1666/株hm~2、2222株/hm~2和3333株/hm~2)两种配置(1666株/hm~2,株行距分别为2m×3m、1m×6m)尾叶桉试验林的分析结果是:密度越大的林分,,其冠幅、胸径、树高、单株材积、蓄积量就越小。方差分析表明,密度间除保存率、林分蓄积量差异不显著外,其余性状的生长量均有显著的差异,每公顷3333株的林分生长量明显低于其它两种密度。在每公顷同时是1666株的情况下,株行距2m×3m的配置明显优于1m×6m的配置。本试验结果以每公顷1666株,株行距2m×3m的密度配置最好,4年7个月生每公顷林分蓄积量达107.024m~3。
Three kinds of density (1666 plants / hm ~ 2,2222 plants / hm ~ 2 and 3333 plants / hm ~ 2) in four years and seven months (1666 plants / hm ~ 2) , 1m × 6m) Eucalyptus urophylla plantation analysis results are: the greater the density of the forest, the crown width, diameter at breast height, tree volume per plant, the smaller the accumulation. Analysis of variance showed that there was a significant difference in the growth of the remaining traits except for the difference in the rate of density conservation and stand volume accumulation. The stand growth rate of 3333 plants per hectare was obviously lower than the other two kinds of density. In the case of 1,666 plants per hectare at the same time, the arrangement of 2m × 3m lines was significantly better than that of 1m × 6m. The results of this experiment were 1666 plants per hectare with the best arrangement of plant spacing of 2m × 3m. The stand volume per hectare reached 107.024m ~ 3 in 4 years and 7 months.