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树木生长量是用材树木良种选育的重要经济性状。通常是采用某一时间的总生长作为选择尺度,但某一时间的总生长是生长期内生长量变化的最终结果,最终生长相等并不等于生长动态相同,如早期速生和晚期速生的树木可能在生长终期总生长量相等,但生长量在时间上的变化就绝然不同,因此研究生长量在时间上动态变化,更能反映树木基因型的生长特性。生长量在时间上变动分为年生长进程和总生长进程,年生长进程是一个年生长期内生长量的变化,总生长进程是从定植时起到衰老时止的生长量变动。在一定生长期内生长速率大小及其变化,综合
The growth of trees is an important economic trait for breeding elite timber trees. Generally, the total growth at a certain time is taken as the selection criterion. However, the total growth at a certain time is the final result of the change of growth during the growth period. The final growth is not equal to the growth dynamics. For example, the trees of early and late rapid growth may be The total amount of growth at the end of growth is equal, but the amount of growth changes in time is absolutely different, so the growth of the study in the dynamic changes in time to better reflect the growth characteristics of tree genotypes. The change of growth in time is divided into the annual growth process and the total growth process. The annual growth process is a change in the growth amount in one year. The total growth process is the change in the growth amount from planting to aging. In a certain period of growth rate of growth rate and its changes, integrated