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研究提出了红松人工林选择初选优树方法和标准。应用多元回归和改良加权系数公式计算选择指数，依选择指数最高者为初选优树。提出红松坚果型优树划分为早熟型和晚熟型。通过定向培育，选出优良坚果类型
The research proposed the method and standard of choosing the best tree for the Korean pine plantation. Multiple regression and improved weighted coefficient formula to calculate the selection index, according to the highest index for the primaries. It is proposed that the superior tree of Korean pine is divided into early maturity and late maturity. By directional cultivation, select the type of excellent nuts