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白桦生长变异与早期选择技术研究

Li-you LIU,Xiao-bo CHEN, Lu-feng NING, Yan SHI, Ming-seng CUI, Jun-shan ZANG, Shuang LIU

Journal of Beihua University (Natural Science)（2014）

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Abstract
对吉林省中东部白桦( Betula platyhylla Suk.)天然林进行生长性状早、晚期相关研究,结果表明：白桦天然林不同龄阶的个体生长变异与各性状相关系数与年龄成正比,以15 a生的天然林生长变异、相关系数增长率最高,以后与年龄成反比,并逐渐平稳.确定白桦天然林早期选择最佳年龄为15 a,白桦天然林可用15 a 胸径对40 a的材积进行早期预测.
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Key words
Betula platyphylla Suk.,growth variation,early selection,the optimal selection age
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