植树造林要先育苗。要育好苗,多育苗,就要了解各种树木种子的发芽特性。树木种子的发芽,有的快,有的的慢,有的要经过处理才能发芽。这就要对不同种子进行不同的处理。例如,核桃、核桃楸、山杏、榛子、桃、李等种子,外壳很厚很硬,就要先使种壳裂开,让种仁吸足水份,才能发芽。所 Afforestation should first raise seedlings. Breeding seedlings, breeding more, we must understand the germination characteristics of various tree seeds. Tree seed germination, some fast, some slow, and some have to be processed to germinate. This will require different treatment of different seeds. For example, walnuts, walnut, apricot, hazelnut, peach, plum and other seeds, the shell is very thick and hard, it is necessary to split the seed shell, seed kernels to absorb enough water to germinate. The