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矮化密植是提高果树单位面积产量的有效措施,利用矮化砧是控制树体大小和提早结果的重要途径。根据1974年全国苹果矮化砧木繁育和利用研究协作座谈会商定的精神,为了研
Dwarfing close planting is an effective measure to increase fruit yield per unit area. Using dwarfing anvil is an important way to control tree size and early result. According to the 1974 national apple dwarf rootstock breeding and utilization research collaboration spirit of the symposium, in order to study