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目前我国中部地区苹果树广泛应用的Ｍ２６矮化中间砧，抗枝干轮纹病能力有限，尤其是进入结果期后，随着树龄和果实负载量的增加，发病程度日益严重，从而影响了树体的经济结果年限，阻碍了矮化砧在该地区的发展利用。因此，我们从１９７２年就着手苹果矮砧选育工作，以期...
At present, the M26 dwarfing intermediate anvil widely used in the apple tree in the central region of China has limited ability to resist the occurrence of rodenticides, especially after entering the fruiting stage, with the increasing of tree age and fruit load, the incidence is more and more serious, The economic results of the body, hinder the dwarfing anvil in the development and utilization of the area. Therefore, we started the apple dwarf breeding work in 1972, with a view to ...