许多果树如山楂、桃、李、杏、橄榄、葡萄等,其种子的外壳坚硬致密,不易吸水膨胀开裂,同时又阻碍气体交换,造成种子发芽困难,出苗率低。因此,果树硬壳种子在播种前需要及时进行处理,以提高其成活率,现将笔者多年的经验介绍如下。1.冷热交替变温处理冻种秋季采果取出种子后,在“ Many fruit trees such as hawthorns, peaches, plums, apricots, olives, grapes, etc., have hard and dense shell crusts that are not easily water-swollen and cracked, while hindering gas exchange, resulting in seed germination difficulties and low emergence rates. Therefore, the fruit tree crust seeds before sowing in need of timely processing, in order to improve its survival rate, now the author years of experience are as follows. 1. Hot and cold alternating temperature change frozen autumn pick fruit seeds, the "