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一、我省苹果树适宜采取那种树形?实践证明,基部三主枝邻近半圆形树形具有骨架牢固、光照好、产量高、寿命长的特点,是我省推广的苹果树形。其树体结构是:树高4米,干高40～60厘米,全树五六个主枝,在树干上分上下两层。第一层的三个主枝着生在树干的40厘米以内,第二层的两三个主枝与第一层主枝间距80～100厘米,与第一层主枝错落着生。每个主枝上着生两三个侧枝,在树干与主、侧枝上着生结果枝组。(如图1、2)。
First, the apple tree in our province suitable for that kind of tree? Practice has proved that the three main branches near the semicircular tree with a solid skeleton, light, high yield, long life characteristics, is the promotion of apple tree in our province. The tree structure is: tree height 4 meters, dry 40-60 cm, the whole tree five or six main branches, points in the trunk up and down two layers. The first three main branches of the tree were born within 40 cm of the trunk, the second layer of two or three main branches and the first layer of the main branch spacing of 80 to 100 cm, with the first layer of the main branches scattered with students. Each main branch with two or three side branches, in the trunk and the main, the branches on the outcome of Zhizu group. (Figure 1, 2).