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龙眼普遍存在隔年结果现象。主要原因是龙眼枝梢有明显的顶端优势。大量结果的年份,养份集中供应花果,枝梢基部腋芽缺乏养分,受到抑制,不能萌发夏梢。而龙眼的夏梢和夏延秋梢是翌年的主要结果母枝,其成穗率在80%以上。夏剪的目的主要是促进夏梢萌发,从而克服隔年结果的现象。一、修剪对象。没有抽穗和萌芽的夏秋梢,当年抽生的春梢,座果率差的弱果枝,大量结果分布不匀的密果枝,冠内荫枝等,都是修剪的对象。所修剪的枝梢应占树冠的40%左右。
Longan prevalence of the phenomenon of every other year. The main reason is that longan shoots have a distinct top edge. A large number of results of the year, concentrated supply of fruits and flowers, shoots axillary buds lack of nutrients at the base, inhibited, can not sprout summer tip. The longan and summer dwarf autumn tip is the main result of the following year, the parent branch, the ear rate into more than 80%. The purpose of summer cut is mainly to promote the summer tip germination, thus overcoming the phenomenon of next year’s results. First, trim the object. No heading and sprouting of summer and autumn shoots, when pumping spring shoots, poor fruit yield of fruit branches, a large number of uneven distribution of dense fruit branches, crown shade branches, are the object of pruning. The pruning branches should account for about 40% of the canopy.