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成龄树的修剪一是去旧留新,实现果枝不断更新复壮;二是去高补空,利用徒长枝补满树冠。一、春季修剪3月15日～4月20日是一年中最全面的1次修
First, the pruning of mature trees to the old to stay new, fruiting branches to achieve renewal and rejuvenation; the second is to go sky high, the use of leggy branches to fill the crown. First, the spring pruning March 15 ~ April 20 is the year’s most comprehensive 1 repair