林木种子层积催芽技术大部份落叶林木的种子，如水曲柳、君迁子、银杏、白腊、山楂等，采收后常处于休眠状态，必须经过一段时间低温湿润的层积处理才能发芽。一、层积时间：根据播种期和种子需层积的天数而定。一般以层积５０～１００天为宜，山楂为２００～３００天。二... Stratified germination techniques of forest seed Most of the deciduous forest seed, such as ash, daddy, ginkgo, white wax, hawthorn, etc., after harvest, often in a dormant state, must be after a period of low temperature wet stratification to germinate . First, stratification time: According to the sowing date and the number of days stratification should be. Laminated generally 50 to 100 days is appropriate, hawthorn for 200 to 300 days. two...