目前,圆头形龙眼树普遍存在的问题是树冠高大、大枝太多、大枝直立、绿叶层薄,\\\"远看一把伞,近看光杆杆\\\"。导致采果难、喷药难、疏花疏果难、修剪难,且肥料利用率低,大小年严重。把圆头形龙眼树改造为开心形,能够有效降低树高,开张大枝角度,减少大枝数量,改善树冠通风透光条件,削弱营养生长,促进生殖生长,有利于轻简栽培,减轻大小年幅度,实现龙眼丰产稳产。将现有的龙眼圆头形树改造为开心形,原则上在一年的 At present, the common problem of the dome-shaped longan tree is that the crown is tall, the branch is too large, the big branch is upright, and the leafy layer is thin. Lead to fruit picking difficult, spraying difficult, thinning thinning difficulties, pruning difficult, and the low utilization of fertilizer, the size of the year serious. The round-shaped longan tree transformed into a happy-shaped, can effectively reduce the tree height, open a large branch angle, reduce the number of large branches, improve the tree canopy ventilation and light conditions, weakening vegetative growth and promote reproductive growth, conducive to light and easy cultivation, reduce the size of years , To achieve high yield and longan longan. The existing longan round head tree transformed into a happy heart, in principle, in a year