沙枣、桃、杏、白腊复叶槭等种皮较厚的种子,在播种后,往往当年不发芽,或者经几个月后才发芽,所以需要经过提前催芽。催芽的方法很多,但根据几年来的经验证明,“湿沙埋藏法”适应树种多、省工、简便、效果好。它的具体做法是,在背风向阳地上,挖深1米(宽根据种子多少决定)的坑,上边铺一层约5厘米厚的细沙做为基础,然后放一层种子(厚度为种子的2——3倍),再放相当于种子厚度的一层湿沙(湿沙的湿度为100斤风背沙或河登沙拌15——17斤水),最后象前边一样,一直埋到离地面45厘米处为止,45厘米以上不要埋种 Salad dates, peaches, apricot, Acer palmatum and other seed coat thicker seeds, after sowing, often do not germinate that year, or after a few months before germination, it needs to be premature germination. There are many ways to germinate, but based on years of experience, it has been proven that “wet sand burying” adapts to many tree species, saves labor, is simple and has good effect. Its practice is to dig a pit of 1 m (wide according to the number of seeds) on a sunny leeward, with a layer of fine sand about 5 cm thick as a base and a layer of seeds 2 - 3 times), and then put a layer of wet sand equivalent to the thickness of the seed (wet sand humidity of 100 pounds of wind sand or river Dengshen mix 15 - 17 pounds of water), and finally as before, has been buried 45 centimeters above the ground, 45 centimeters above not buried