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苹果纺锤形树形包括自由纺锤形和细长纺锤形两种树形 ,自由纺锤形适于行株距 4～ 6m× 3～ 4 m的栽植密度 ,细长纺锤形适于行株距 3～ 4 m× 1.5～ 2 m的栽植密度。因两种树形结构简单、骨干枝级次少、树冠容易控制、便于更新等而适宜密植。随着苹果密植栽培的普及 ,生产上应用
The apple spindle-shaped tree includes two kinds of free-spindle and elongated spindle. The free spindle is suitable for planting density of 4 ~ 6m × 3 ~ 4m. Slender spindle shape is suitable for 3 ~ 4m × 1.5 ~ 2 m planting density. Due to the simple structure of the two tree-shaped branches less backbone level less crown easy to control, easy to update, etc., and suitable for close planting. With the popularization of close-planting apple cultivation, production applications