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对楸树枝重与枝长和枝径的相关性进行了分析，结果表明，以枝径作为枝重的预测因子，具有简便易行，精确可靠的优点。楸树一、二年生枝重的回归模型分别以指数函数（ｙ＝１２．７４７６ｅ１．５００９ｘ）和幂函数（ｙ＝６４．８１７３ｘ２．２５７８）效果最佳，列出了枝径与枝重的换算表。同时，对抽样技术进行了讨论
The correlation between branch weight and branch length and branch diameter was analyzed. The results showed that the branch diameter was the predictor of branch weight, which had the advantages of simplicity, accuracy and reliability. The regression model of one-year-old and two-year-old branches of Catalpa bungei had the best results with exponential function (y = 12.7476e1.5009x) and power function (y = 64.8173x2.2578) . At the same time, the sampling technique is discussed