苹果树从初果期到盛果期之间,有个产量急速上升的过渡时期,称为“盛果前期”一般乔化树十年生左右,矮化树五年生左右。苹果树进入“盛果前期”,整形任务已基本完成,树势也逐渐趋于稳定。但为了加快进入盛果期,保证形成一个丰产的树体结构。这一时期在修剪中需特别注意以下三方面问题。1 注意树体结构的调整 可采取“疏密通光”和“疏外养内”两种措施来调整树体结构。 疏密通光就是根据丰产树体结构的要求和树体具体生长情况,加大保留枝的角度。疏除部分过密的大的辅养枝,打开层间距离,改善内膛的通风透光条件,提高光合效率;疏外养内就是对树冠外围枝条长势偏旺、数量过多的树,本着“疏大不疏小、疏老不疏幼”的原则,适当疏除或回缩树冠外围的过密枝条,以平衡内外长势,促进内膛枝 Apple tree from early fruiting period to fruiting period, there is a transition period of rapid increase in production, known as the “early fruit” of the general Joe tree ten years or so, dwarf trees about five years. Apple tree into the “pre-Sheng fruit,” plastic surgery has basically completed the task, the tree has also gradually stabilized. However, in order to speed up the flourishing period, it is guaranteed to form a high-yield tree structure. During this period, special attention should be paid to the following three issues during pruning. Note that the adjustment of the tree structure can take “light and dense light” and “sparsely nourished” two measures to adjust the tree structure. Light and dense light is based on the requirements of high yield tree structure and the concrete growth of the tree, increase the retention branch point of view. Thinning out some of the over-dense large branches of support, open the distance between the layers to improve the ventilation of the bore conditions, improve photosynthetic efficiency; sparsely preserved within the crown is the growth of the peripheral branches of Wang Wang, excessive number of trees, With the principle of “sparse, sparse and sparsely populated,” sparse or retract the dense branches on the periphery of the canopy in order to balance the internal and external growth and promote the development of the internal branches