【摘 要】
：
30年以上的老龄苹果树,由于树龄长,树体衰弱,病虫害严重,多认为没有改造的价值,因而出现刨树毁园现象。仅蓬莱市淳于乡自1990年以来,先后刨掉老苹果园310余亩,约占全乡果园
【机 构】
：
蓬莱市淳于乡果树站,山东省烟台农业学校,山东省烟台农业学校 265600
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30年以上的老龄苹果树,由于树龄长,树体衰弱,病虫害严重,多认为没有改造的价值,因而出现刨树毁园现象。仅蓬莱市淳于乡自1990年以来,先后刨掉老苹果园310余亩,约占全乡果园总面积的5.3％,占30年生以上老苹果园面积的21.2％。据此,我们于1994～1995年,在蓬莱市淳于乡首次对30年生以上老龄苹果园进行了“超多头高接换种技术”的试
Aged apple tree more than 30 years, due to the long age, the tree is weak, serious pests and diseases, many think there is no transformation of the value, resulting planing tree destruction phenomenon. Chunyu Township in Penglai City alone has planed about 310 mu of old apple orchards since 1990, accounting for 5.3% of the total area of the orchards in the township and 21.2% of the area of old apple orchards over 30 years old. Accordingly, from 1994 to 1995, we first conducted the experiment of “super long head high-exchange technology” in Chunyu Township, Penglai City, for the first time for aged apple orchard over 30 years of age
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