苹果“珠帘式”树形模式

苹果珠帘式树形模式的结构特点是主枝少、角度大、无侧枝、头拉耷；整形要点是骨干枝开角不截，背上枝用做扩冠，外围枝下垂结果，新头枝让果压弯；修剪要点是以疏为主单轴延伸保证光路。该树形模式实际是纺锤体的组合体，为最大限度维护树体动态平衡，改造传统树形，更新复壮结果期树，生产优质苹果，提供了新的技术途径和理论依据。

The Pearl curtain Tree Model of Apple

The characteristic structures of pearl curtain, tree model apple are:little main branches, big angle, whithout side branches,hanging head;the main shearing points are: not cuttion the open angle of the main branches, using the back branches to expand the crown, peripheral branches hanging and bearing apple,the new branch curved by apple; the main cutting points are: manly on thining the branch for lihgtening, to ensure the single branch extending for lightening. This tree model is a practically combined body of spindle, and to keep the tree body in most dynamic equilibrium, to transform the traditional tree model, to renew the rejuvenation of the fructescence. It was proviede the new technology and theoretical basis for producing good quality apple.