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文章对红锥中心分布区的广东、广西、福建主要种源进行早期生长比较试验。结果表明:中心分布区种源在广州龙洞地区生长差异明显,2年生时最优种源的排序是来自广西大青山、广东高州、广西容县、广东信宜、广东陆河。选择优良单株采种的效果明显优于普通混合采种,表型选优的材积平均生长增益达297.8%以上,各种源的早晚相关性均达到极显著水平,良种的区域性选择十分必要。
In this paper, the comparative experiments of early growth of main provenances of Guangdong, Guangxi and Fujian in the center area of red cone were carried out. The results showed that there were significant differences in germination of provenances in Longdong area of Guangzhou. The order of the best provenances in 2-year-old was from Daqingshan in Guangxi, Gaozhou in Guangdong, Rongxian in Guangxi, Xinyi in Guangdong and Luhe in Guangdong. The results showed that the best single seed selection was superior to that of common hybrid seed selection. The average volume growth gain of phenotypic optimum was above 297.8%. The early and late correlation of various sources reached extremely significant level. The regional selection of elite seeds was very necessary.