１、浸种法多数树种的种子，播前只要用凉水，温水浸泡一下，使种了吸水膨胀，播后即可提早发芽。浸种时间长短和水温高低随树种而有所不同。榆、桑、杨、柳等树种的种子，播前只用温水喷洒、搅拌，使种子湿润均匀，阴干后即可播种；一般小粒种子，用凉水浸泡３～５天后播种； 1, seed soaking seeds of most species, as long as the pre-sowing with cold water, soaked in warm water, so that the kinds of water swelling, sowing after germination. Seed soaking time and the level of water temperature vary with the tree species. Elm, mulberry, poplar, willow and other tree seeds, before sowing only warm water spraying, stirring, so that the seeds moist evenly, dry after seeding; general small seeds, soaked with cold water 3 to 5 days after sowing;