富士系苹果,除短枝型品种外一般为乔化树,其幼树生长势强,开花结果较晚,对夏季修剪比较敏感。通过夏季开张角度、扭梢、摘心及环剥等措施,能促进腋花芽和短果枝的形成,达到提早结果、丰产的目的。近几年来,我们在晋南及晋中一些红富士苹果产区推广夏季修剪技术,收到了较好的效果,现介绍如下。 (一)开张角度一般在5月中下旬新梢旺盛生长时期进行。此时,新梢前部已有一定的生长量,经开角后可削弱枝条顶瑞优势,有利于中后部芽的萌发,从而缓解枝条中后部光秃现象。富士系苹果除中心干以外的骨干枝、大型辅养枝 Fuji apples, in addition to the spur type varieties generally Qiahuashu, saplings grow strong, later flowering, more sensitive to summer pruning. Through the summer opening angle, twist tip, topping and girdling and other measures to promote the formation of axillary buds and short fruit branches, to achieve early results, the purpose of high yield. In recent years, we promoted summer pruning techniques in some Red Fuji apple producing areas in southern Shanxi and Jinzhong and received good results. (A) the opening point of view Generally in mid to late May flourishing period of new shoots. At this point, the tip of the shoot has a certain amount of growth, after the opening angle can be weakened the top of the branch Rui advantage, is conducive to the germination of the bud in the middle and rear, thereby alleviating the back of the branches of the phenomenon of baldness. Fuji addition to the center of the apple branch of the backbone of dry branches, large branches