苹果树拉枝是一项简便易行、见效快、效果好的开张角度措施。苹果树成形期拉枝一年四季均可进行,不同时期各有利弊。冬季拉枝可与冬季修剪结合进行。时间长,农活闲,无叶幕遮挡,便于拉成理想角度。但冬季拉枝需保持较长时间,一般半年以上才能自然固定。且冬季枝条硬、脆,易折伤受冻。春季树液开始流动后枝条变软,拉枝较省力。但发芽前拉枝易促发基部及背上出旺条;发芽后拉枝虽能提高萌芽率、抑制背上旺条出现,但此时拉枝易碰伤和碰落幼嫩枝芽及着生的花果。夏季拉枝枝条软且生长快,容易自然固定,并可于夏初做为促花的辅助措施与其它促花措施配合使用。但因天气热、农活忙、易促发徒长枝等原因其应用也受到限制。近年多提倡秋季拉枝,认为在新梢基本停长后拉枝不刺激新梢徒长和芽子萌发,可于休眠前修复输导组织的损伤。此时拉枝自然固定快,且因改善了光照状况而增加了营养积累。但秋季拉枝后次年春季需抑制背上旺长和进行背下刻芽促萌。苹果树拉枝与前后采取的其它管理措施是相互连贯的。各地应以自己的树体生长情况和管理水平出发选择适宜的拉枝时期。不论哪个时期拉枝均需与前后的其它综合管理措施密切配合,这样才能取长补短、扬长避短,充分发挥拉枝在苹果树整形修剪中的作用。 Apple tree pull sticks is a simple, quick, effective opening angle measures. Apple tree pull branch throughout the year can be carried out during different periods have their own advantages and disadvantages. Winter twigs can be combined with winter pruning. A long time, farm leisure, no leaf curtain block, easy to pull into the ideal point of view. However, in winter the branch needs to be maintained for a long time, usually more than six months to naturally be fixed. Winter branches and hard, crisp, easy to hurt by freezing. Spring branches began to flow after softening branches, pull more effort. However, before the spur to pull the branch to promote the base and the back of a prosperous; sprouting after sprouting can increase the rate of sprouting, inhibit the back of the prosperous appear, but this time easy to bruise and bump off buds and young branches Raw fruit Summer twig branches soft and fast growth, easy natural fixed, and can be used as a supplementary measure to promote flowers in the early summer with other flowers with the use of measures. However, due to the hot weather, agricultural activities, easy to promote the growth of leggy and other reasons its application is also limited. In recent years, many advocate autumn pull branches, that the shoot in the shoot after the basic extension of the long shoot does not stimulate the proliferation of new shoots and bud germination, can be repaired before the dormant tissue injury. At this moment, the branches are naturally fixed fast, and the nutrition accumulation is increased due to the improvement of the light conditions. However, after the pull-off in autumn the following spring need to suppress the back of the flourishing and the back of the carved buds to promote Meng. Apple tree branches and other measures taken before and after the interlinked. All places should be based on their own tree growth and management of the starting point to choose the appropriate pull branch period. No matter at which period the needles and other comprehensive management measures before and after the close coordination, so as to learn from each other’s weaknesses, give full play to the role of the branches in apple tree pruning.