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‘青矮3号’是1978年从苹果矮化砧木M9的自然实生苗中选育而成的半矮化砧木新品种。其树冠中等,长势中庸;作中间砧嫁接红富士树,3年生树全部结果,7~14年生树平均产量42 270 kg.hm-2(M26嫁接树为34 785 kg.hm-2),丰产性强;嫁接树的果实着色好,品质优,果形指数、果实硬度和可溶性固形物分别为0.87、7.8 kg.cm-2、14.3%,与M26嫁接树相当。嫁接红富士的盛果期树,树高3.83 m,冠径3.57 m,为M26嫁接树的130%,属半矮化砧木;干性强,可不设立柱栽培;适宜在山东、河北、山西、陕西等苹果主产区应用。
’Qing dynasty No. 3’ is a semi-dwarf rootstock new variety that was bred from the natural seedling of apple dwarf rootstock M9 in 1978. The tree crown was medium and the growth was moderate. The average yield of 7-year-old tree was 42 270 kg.hm-2 (34 785 kg.hm-2 for M26 grafting tree) with high yield The fruit of the grafted tree had good coloring, good quality, fruit shape index, fruit firmness and soluble solids were 0.87, 7.8 kg.cm-2 and 14.3%, respectively, which was similar to M26 grafted tree. Grafted red Fuji full fruit period tree, tree height 3.83 m, crown diameter 3.57 m, M26 grafted tree 130%, is a semi-dwarfing stock; strong dry, without column cultivation; suitable for Shandong, Hebei, Shanxi, Shaanxi and other main apple producing areas.