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云南的核桃绝大多数属于铁核桃(Juglans sigillata Dode.)这个种,是胡桃属(Juglans L.)胡桃组中以产果为主要栽培目的的经济林木树种。果油兼优,在我省广为栽培,由于长期以来采用嫁接繁殖,形成了许多性状稳定的品种。云南主要的栽培品种有泡核桃、三台核桃、细香核桃、圆波罗核桃、大白壳核桃、娘青夹棉核桃等六个品种,其性状稳定,分布较广。系统地掌握这些核桃品种的经济性状,为核桃栽培、良种选育提供依据很有必要。为此,我们于1980～1985年对上述主要核桃品种的经济性状进行了初步的探讨。
The vast majority of Yunnan walnuts belong to the species Juglans sigillata Dode. These are the economic tree species that are mainly cultivated for fruit production in the Juglans L. walnut group. Fruit oil and excellent, widely cultivated in our province, due to long-term use of grafting and breeding, the formation of many stable varieties. The main cultivars in Yunnan are walnut, Santai walnut, Fragrant walnut, Pollock walnut, white walnut, Navy green walnut and other six varieties, its stable and widely distributed. Systematically grasping the economic traits of these walnut varieties for walnut cultivation, seed selection is necessary to provide the basis. To this end, we conducted a preliminary study of the economic characteristics of the above major walnut varieties from 1980 to 1985.