珙桐种子繁殖和扦插繁殖的生物学特性研究，弄清了种子休眠的主要原因在于种胚形态后熟和生理后熟，探讨了种子休眠萌发机理．用人工低温冷冻或ＧＡ＋６－ＢＡ处理，可使层积２年尚未萌发的种子７０％左右在半月内迅速萌发出苗，缩短休眠期约１年．经不同处理的扦插试验，５％的插条可生根成苗． Davidia involucrata seed propagation and cutting propagation biological characteristics of the study found that the main reason for seed dormancy is embryonic morphology and physiological after-ripe, to explore the mechanism of seed dormancy and germination. With artificial cryogenic freezing or GA + 6-BA treatment, seed germination can be rapidly germinated within about half a month with about 70% of seeds that have not yet been germinated for 2 years, and the period of dormancy is shortened by about 1 year. After different treatments of cutting experiments, 5% cuttings can be rooted into seedlings.