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对１２～１６年生的油松优树半同胞子代林生长过程中树高年——年秩次相关、表型和遗传相关统计分析结果表明，油松早晚期高生长有一定紧密关系，进行早期预测和选择是可行的。用家系５～８年生和单株３～６年生树高可以预测１２～１６ａ的高生长。从选择效率考虑家系最宜选择年龄在１０～１２ａ，单株最宜选择年龄在１２年生后；最宜选择年龄时的家系早期选择效率是４０～５０ａ时的１．９６～１．９８倍，单株的选择效率低于家系；最宜选择年龄随主伐年龄的增大而增大。不同育苗方式和是否能有效控制试验环境，对早期评价的可靠性和精度有影响
The tree height-year correlations were observed during the growth of 12-year-old Chinese pine elite half-siblings, and the results of phenotypic and genetic correlation analysis showed that there was a close relationship between the early and late high-growth of Pinus tabulaeformis Early prediction and selection is feasible. With the family of 5 to 8 years old and 3 to 6 years old tree height can predict the high growth of 12 ~ 16a. Considering the selection efficiency, the most suitable selection age was from 10 to 12 years, and the optimum selection age of individual plant was 12 years after birth. The early selection efficiency of the family with the best selection age was 1.96 to 1.98 times from 40 to 50 years, The selection efficiency of single plant was lower than that of the pedigree. The optimum selection age increased with the increase of cutting age. Different breeding methods and whether it can effectively control the experimental environment, the reliability and accuracy of the early assessment have an impact