天然蓝靛果忍冬林更新复壮技术的研究

Study on Regeneration and Rejuvenation Technology of Natural Lonicera caerulea Linn.var.edulis Turcz.ex Herd.Forest

蓝靛果忍冬(Lonicera caerulea Linn.var.edulis Turcz.ex Herd.)在我国广泛分布于东北和华北地区。我们对天然蓝靛果忍冬林更新复壮技术进行了研究,结果表明:随着郁闭度的增加,蓝靛果忍冬树高、东西冠幅、一年生枝的大小都明显下降,表现出蓝靛果忍冬具有喜光的特点;不同更新复壮密度对蓝靛果忍冬生长的影响,也是随着更新复壮密度的降低,其树高、冠幅、一年生枝的长度与粗度的生长都逐渐增加,而基径、丛枝数变化不明显。蓝靛果忍冬栽植密度在2m×2m或2m×3m为好。

Lonicera caerulea Linn.var.edulis Turcz.ex Herd.is widely distributed in Northeast and North in China.The regeneration and rejuvenation techniques of natural L.caerulea var.Edulis forest were studied.The results showed that with the increase of different canopy density,the tree height,East-West crown width and annual branch size of L.caerulea var.Edulis decreased significantly,showing that L.caerulea var.Edulis had the characteristics of light-loving;The effects of different regeneration and rejuvenation densities on the growth of L.caerulea var.Edulis also showed that with the decrease of regeneration and rejuvenation densities,the growth of tree height,crown width,annual branch length and diameter increased gradually,while the basal diameter and number of branches did not change significantly.The planting density of Lonicera caerulea var.Edulis should be 2m×2m or 2m×3m.