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一、试验目的“种源”通常是指从同一个树种分布区中的不同地区收集种子(或无性系苗),同一树种长期在气候、土壤条件不同地区生长和发育,其形态、生理、生长、抗性以及适应性等方面会发生种种变异,有些变异是可遗传的,这种变异称种源变异。将一个物种的不同种源集中于一个地点进行育苗造林对比的研究就是种源试验。
First, the purpose of the experiment “provenance” usually refers to the same species distribution in different regions of the collection of seeds (or clonal seedlings), the same species of long-term climate and soil conditions in different regions of the growth and development of its morphology, physiology and growth , Resistance and adaptability and other aspects of a variety of changes will occur, some of the variation is heritable, this variation is called provenance variation. Studying the contrast of different provenances of a species in one place for seedling is the provenance test.