银杏果珍材良，药食两用，一次栽植，终身受益。近几年来，河北省的银杏种植面积在迅速扩大。由于缺乏相应的技术指导，许多地方见苗就栽，有种就育，造成银杏苗木良莠不齐，结种晚，产量低，经济效益差。银杏苗木的优劣直接影响到栽植成活率和开花结实的早晚。因此，欲发展银 Ginkgo biloba Jane good, edible, once planted, life-long benefit. In recent years, ginkgo cultivation in Hebei Province is rapidly expanding. Due to the lack of appropriate technical guidance, see many places planted seedlings, a kind of education, resulting in good and bad gingko seedlings, late seed production, low economic efficiency. The merits of gingko seedlings directly affect the planting survival rate and blossom sooner or later. Therefore, want to develop silver