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2008—2010年在江苏省丰县进行了弘前富士苹果树郁闭园改造试验,树形由主干疏层形改为小冠开心形,改造后树高2.5～3.0 m,干高1.0～1.5 m,单层主枝,平均主枝3.6个;改造苹果树产量增加,品质提高,枝量减少,叶面积指数减小,通风透光得到改善。
In 2008-2010, we carried out the transformation test of Hirosaki Fuji apple tree canopy in Fengxian County, Jiangsu Province. The tree shape was changed from the main sparse layer shape to the small crown shape. The tree height was 2.5-3.0 m and height 1.0-1.5 m, The main branches of single layer, the average main branch of 3.6; transformation of apple trees to increase production, improve quality, reduce the amount of branches, leaf area index decreased, ventilation and light is improved.