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一、目前常用的几种树形1、自然开心形:主干上三主枝错落,三主枝按30—45°开张角延伸。每主枝上有2—3个侧枝。开张角60—70°,本形主枝少,侧枝强,骨干枝间距大,光照好,枝组寿命长,修剪量轻;结果面积大,丰产。2、改良杯状形:由杯状形改进而来。仍同杯状形一样,三主枝基部邻接。以后大体按二叉式分枝。主枝按45—55°角度开张延伸。树形基本完成时主枝头剪口间的距离达80—100厘米。二、修剪方法1、短截:将枝条剪短称短截。多年生枝的短截叫回缩。对剪截附近的枝芽有局部促作用。2、疏剪:将枝条从基部完全疏除叫疏剪。有
First, the current number of commonly used tree 1, natural happy shape: the main branch of the three main branches scattered, three main branches by 30-45 ° opening angle extension. Each branch has 2-3 branches. Opening angle of 60-70 °, the main branch less shaped, strong side branches, large spacing between the backbone branches, light is good, long branch life, pruning light; results area, high yield. 2, improved cup-shaped: improved from the cup-shaped. Still with the same cup-shaped, three main branch base adjacent. Subsequent generally by two branches. Main branches opened by 45-55 ° angle extension. When the tree is basically completed, the distance between the branches of the main branches reaches 80-100 cm. Second, the pruning method 1, short cut: Short cut short branches. Truncated branches of perennial branches retract. On the cut near the branch buds have a local role in promoting. 2, sparsely cut: the branches completely sparse from the base called Shu sheng. Have