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山东地处温带,极适于苹果属植物的生长,苹果砧木资源十分丰富。青岛市农科所于1956年作了初步调查后,与有关单位协作,进行了二十多年的生物学特性研究。全省常用的苹果砧木有6个种,包括30多个类型。其中西府海棠(Malus micromalus)、楸子(M.prunifolia)、三叶海棠(M.sieboldii)和湖北海棠(M.hupehensis)是本地土生上长的,山荆子(M.baccata)
Shandong is located in temperate, very suitable for the growth of apple genus, apple rootstock is very rich in resources. Qingdao Agricultural Institute made a preliminary investigation in 1956, in cooperation with the relevant units, conducted more than 20 years of biological characteristics. There are 6 species of apple rootstock commonly used in the province, including more than 30 types. Among them, Malus micromalus, M. prunifolia, M. sieboldii, and M. hupehensis are native to China. M. baccata,