通常认为，板栗苗木生长前期主要依靠其肥厚的子叶提供营养，因此，育苗时多选择大种子，以求快速生长，我们也一直采用100～120粒／kg的种子育砧。但由于前几年板栗的价格不断上涨，特别是大种子价格倍增，育苗成本也大幅度上升，而相对来讲，小种子价格较低。因此从1988年开 It is generally believed that the early growth of chestnut seedlings mainly rely on its hypertrophic cotyledons to provide nutrition, therefore, the choice of large seeds growing seedlings, in order to rapid growth, we have also used 100 to 120 seeds / kg seed anvil. However, due to the continuous increase of the price of chestnut in previous years, especially the increase of the price of large seeds, the cost of raising seedlings has risen sharply, while the price of small seeds has been relatively low. So from 1988 onwards