苹果初成熟的种子处于休眠状态,其生理活动极其微弱,细胞壁和原生质透性差,故立刻播种不能萌发。据报道,苹果种子通常在5～7℃下,需层积60天左右,方可活化其生理生化过程而发芽。然而,我们将沙藏的苹果种子放置于尿素晶体中,造成低温、湿润、通气的条件,并给予一定的激素刺激,结果具有明显的促进发芽效应。具体做法是:先将刚脱离果实的苹果成熟种子用50～60ppm赤霉素溶液处理,然后与含水量60～70％的“淡沙”按1:2量混拌置于大玻璃试管,装入量 Early mature apple seeds in dormancy, its physiological activity is extremely weak, cell wall and the permeability of the protoplasm is poor, so the immediate sowing can not germination. It is reported that apple seeds usually 5 ~ 7 ℃, need to stratify about 60 days before they can activate the physiological and biochemical processes and germination. However, we placed the sand apple seeds in urea crystals, resulting in low temperature, humidity and aeration conditions, and given some hormone stimulation, the results have a significant role in promoting germination. The specific approach is: first just leave the fruit of apple mature seeds with 50 ~ 60ppm gibberellin solution, and then with the water content of 60 to 70% of the “light sand” by 1: 2 amount of mixing placed in a large glass test tube, Into the amount