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良种是壮苗的基础,壮苗是造林的基础,良种壮苗是林木速生丰产的物质基础。种子休眠是种子学中最根本的问题,有些种子长期休眠不萌发,研究如何打破它,促使快速萌发与生长,对培育壮苗具有重要的实践意义。本文根据一些重要文献,综合地分析种子生理休眠的本质、种子自然休眠类型的分类、温度的作用、某些其他控制因素等在控制种子
Seed is the basis of strong seedlings, strong seedling is the foundation for afforestation, seedling seedling is fast-growing and abundant material base. Seeding dormancy is the most fundamental problem in seed science. Some seeds do not germinate for a long time, and how to break it and promote rapid germination and growth have important practical significance in cultivating strong seedlings. Based on some important documents, this paper comprehensively analyzes the nature of seed physiological dormancy, the classification of natural dormancy types, the effect of temperature, some other control factors,