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林木郁闭以后,及时进行合理整形修枝,是培养优良干形,提高木材品质,促进林木生长发育的重要措施.现就刺槐、黑松的整形修枝技术作些探讨.一、整形修枝的要求整形修枝要根据树木的分枝习性、栽植密度、生长状况及肥培管理条件,逐步进行.具体要求是:在幼林开始迅速生长初期,通过整形修剪,使树木顶梢连年不断向上生长,形成比较理想的主干,并使上、下侧枝均匀地分布在树干的周围,形成发育均衡的树冠.在树高逐年增加后,还要逐步修去树冠基部的枯枝,弱枝,使枝下高逐渐上升到规定的高度,同时,修去枯钉,以避免死节的出现.
Forest canopy closure, timely and reasonable plastic pruning, is to cultivate good dry shape, improve timber quality and promote forest growth and development of important measures. Now acacia, black pine plastic pruning techniques for some discussion. Requirements of plastic pruning tree branches according to habits, planting density, growth conditions and fertilizer training management conditions, and gradually.Particular requirements are: early in the rapid growth of young forest early, by shaping pruning, so that the top of trees continue to grow up year after year, The formation of the ideal trunk, and the upper and lower branches evenly distributed around the trunk, the formation of balanced development of the crown in the tree height increased year by year, but also gradually to repair the canopy at the base of the dead branches, weak branches, so that the branches High gradually rose to the required height, at the same time, fixes the crumbling, in order to avoid the appearance of dead section.