1　试材与方法　于 2 0 0 1年 8月下旬采摘丹东农业科学院果园引种试栽的平欧杂交榛的其中一个品系的果实 (种子 )进行处理 ,即于 9月 6日、10月 10日、11月 7日等 3个时间分别用 10ｃｍ、30ｃｍ、6 0ｃｍ等3种深度进行层积处理。每处理选种 (果实 ) 10 0粒。处理前进行充分吸 1 Materials and Methods The fruit (seed) of one of the hybrid cultivars of the Pingou hybrid hazelnut introduced and planted in the orchard of Dandong Academy of Agricultural Sciences was collected in late August 2001 for processing, that is, on September 6, October 10 , November 7, three times, respectively, with 10cm, 30cm, 60cm and other three kinds of depth stratification. Each treatment selection (fruit) 10 0 tablets. Sufficient suction before treatment