探讨母树径级、贮藏温度及贮藏时间对胖大海种子发芽率的影响.观察不同贮藏条件下种子的发芽情况,通过指数函数建立不同贮藏温度下胖大海种子发芽率与母树径级及贮藏时间的关系模型.结果表明:母树直径50~59 cm提供的种子发芽率、活力最大;母树直径<30 cm提供的种子发芽率、活力最小.0℃贮藏下种子的平均发芽率最高,常温贮藏下最低.胖大海种子的活力和发芽率随贮藏时间的延长而降低,保持种子50%的发芽率,其在-5℃、0℃和常温3个贮藏温度下分别不能长于135、195、45 d.综合分析表明,直径过大或过小的母树提供的种子发芽率均较低,从母树直径50~59 cm选种最佳,最好在0℃环境下贮藏种子,可以延长种子寿命至195 d,但胖大海种子不宜长久贮藏,优质的胖大海种子贮藏时间不能超过270 d.这为胖大海优种选择、贮藏及复壮生产提供了依据. The effect of seedling diameter, storage temperature and storage time on the seed germination rate of chubanthai seawater was studied.The seed germination under different storage conditions was observed, and the seed germination rate, the diameter and storage time The results showed that the germination rate and vigor of the seed provided by the tree with the diameter of 50 ~ 59 cm were the highest, while that of the seed with the diameter of <30 cm was the smallest.The seed germination rate was the highest at 0 ℃ and lowest at room temperature The viability and germination rate of chuban seagrass seeds decreased with the prolongation of storage time, and the seed germination rate was maintained at 50%, which could not be longer than 135, 195 and 45 days at -5 ℃, 0 ℃ and 3 storage temperature respectively. Comprehensive analysis showed that the seed germination rate of mother trees with over-diameter or under-diameter was low, and the seed selection rate was the best from 50 to 59 cm in diameter of mother trees. It is better to store seeds at 0 ℃, which could prolong seed life to 195 d , But the seeds of the sea of ​​fat sea should not be stored for a long time, and the storage time of the good sea of ​​fat sea can not exceed 270 days, which provides the basis for the selection, storage and rejuvenation of the fat sea.