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杉木是我国南方主要用材树种,分布于16个省区,横跨南、中、北三个亚热带(以下简称南带、中带和北带)。在长期的生长发育过程中,由于分布区的气侯、土壤及地貌等生态条件的差异,长期自然和人工选择的影响,种内产生了明显的遗传分化,形成了不同的地理种源。为了研究杉木的地理变异规律,挖掘和保存杉木优良基因资源,区划杉木种子调拨范围,提高杉木生产力,我省参加了全国杉木地理种源试验。本文是1976年及1979年两次全分布区试验结果。
Cunninghamia lanceolata is the main timber species in southern China. It is distributed in 16 provinces and autonomous regions, spanning three subtropics (south, middle and north). In the long-term growth and development process, due to the differences in climate conditions, soil and landform and other ecological conditions in the distribution area, long-term natural and artificial selection, obvious genetic differentiation has occurred in the species and different geographic provenances have been formed. In order to study the rules of Chinese fir geographic variation, excavate and preserve the excellent gene resources of Chinese fir, and to divide the allocation range of Chinese fir seeds and improve the productivity of Chinese fir, the province participated in the test of geographical provenance of Chinese fir. This article is the result of two full distribution test in 1976 and 1979.