核桃是重要的木本油料树种,综合利用价值很高,核仁富含脂肪、蛋白质等营养物质,据分析,核仁含油率在50—60%以上,故有“木本油料王”之称。我省广大群众栽培核桃的历史悠久,目前在朝阳地区有二、三百年生的大树,仍有结实能力。解放后,在毛主席革命路线的指引下,核桃生产有了相应的发展,现在旅大、营口、朝阳、锦州、昭盟地区的17个县(旗、区)都已有核桃栽培。鉴于核桃是属于异花授粉植物,长期以来又多是实生繁殖,致使种内类型极为多样,核果品质良莠不齐。因此,为了尽快地给生产上提供良种和总结核桃选优的方法。在省林业局的领寻下由旅大市林业管理站、辽宁林业土壤研究所、辽宁农学 Walnut is an important woody oilseed species, the comprehensive utilization of high value, nucleolus is rich in fat, protein and other nutrients, according to analysis, kernel oil content in more than 50-60%, so there is “woody oil king” . The broad masses of people in our province have a long history of growing walnuts. At present, there are two or three hundred-year-old big trees in the Chaoyang area, and still have strong capacity. After the liberation, under the guidance of Chairman Mao’s revolutionary line, there has been a corresponding development in the production of walnut. Now, 17 counties (banners and districts) in Luda, Yingkou, Chaoyang, Jinzhou and Zhaomen all have walnut cultivation. In view of the walnut is a cross-pollination plant, long-term is mostly real reproduction, resulting in very diverse species types, quality drupe uneven quality. Therefore, in order to provide as soon as possible to the production of seeds and summarize the method of walnut selection. Led by the provincial forestry bureau under the Luda forestry management station, Liaoning Forestry Research Institute of soil, Liaoning Agronomy