通过抗寒剂拌种和叶面喷施试验 ,比较分析了各处理中种子和幼苗耐低温能力。结果表明 ,在不同低温条件下 ,用抗寒剂拌种后 ,提高种子的发芽率和发芽势 ,增加根冠比值 ,增强抗寒能力 ;叶面喷施抗寒剂 ,可提高幼苗的抗寒性 ,增加根冠比值和叶质重。在测定的各项指标中以 50倍液处理的抗寒效果较好。 Cold-resistant seed dressing and foliar spraying experiments were conducted to compare the ability of low temperature resistant seed and seedling in each treatment. The results showed that seedling germination rate and germination potential were increased under different cold temperatures with cold-resistant agent, and the ratio of root to shoot was increased and the cold resistance ability was increased. Sex, increased root-shoot ratio and leaf weight. In the determination of the indicators to 50 times the liquid treatment of cold better.