一、采种。选择结实多、长势壮、无病虫害、品种优良的中年母树采种。当果实外皮呈紫红色,内种皮变蓝黑色时,采集籽粒饱满、色黑油亮、富有光泽的优质种子。采集后放于阴凉通风处凉干,不要爆晒,凉干过程中要勤翻动,防止种子腐烂变质。当种皮开裂、种粒脱出后,去除种皮和杂质,将纯净的种子再充分凉干,待结冻前进行沙藏催芽处理。 First, seed collection. Choose strong, growing strong, no pests, good middle-aged mother tree species. When the fruit skin was purple, the inner seed coat turns blue-black, collecting full grain, dark, shiny, high-quality seeds. After collection, put it in a cool and dry place, do not expose the sun, the ground should be ground during the drying process to prevent the seeds from rotting and deteriorating. When the seed coat is cracked, the seeds are removed, the seed coat and impurities are removed, and the pure seeds are fully dried, and the sand reservoir is to be germinated before being frozen.