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一、前言从一个树种分布区内的不同产地采种,进行育苗造林试验,在于判定那些地区的种子,能在一定的地区长成生产力高的森林,为合理区划种子调运界限提供科学依据。同时探讨不同地理来源的林木之间表现型变异性的遗传部份与环境部份,为林木选育种提供有价值的原始资料。引种工作如能在种源试验基础上进行,则有更好的效果。因此,根据产地试验结果进行种源选择,已成为现代造林技术上的一项重大革新措施。
I. INTRODUCTION Seeding from different habitats in a tree species distribution area for seedling afforestation experiments is to determine the seeds in those areas and grow into high productivity forests in certain areas to provide a scientific basis for the rational division of seeding boundaries. At the same time, the genetic and environmental components of phenotypic variability between trees in different geographical origins were explored to provide valuable raw data for breeding tree species. If the introduction of seed breeding experiments can be carried out on the basis of better results. Therefore, the selection of provenances according to the results of producing areas has become a major innovation in modern afforestation technology.