CAJ | 학술논문

对10年生和7年生的两块杉木无性系试验林历年生长资料进行分析研究，得出结果：从第2年起无性系高、径生长量的F值、方差分量、重复力明显增大，并开始趋于稳定，无性系重复力较高，介于0.65～0.90之间居多。从3～4年生起，各年龄树高、胸径与近期对应性状的相关系数，以及与近期材积的相关系数增大，至趋于稳定。3～4年生后各年龄树高、胸径相关信息量亦表现出与相关系数同样的趋势。遗传相关系数大于秩次、表型、环境相关系数，表明年龄间生长的相关主要受遗传控制，无性系早期选择是有效的。早期选择最佳年龄，随主伐年龄的不同而有所差异，但介于3～4 a之间。选择效率D早-V晚高于H早-V晚，前者出现最大选择效率的年龄早于或等于后者，所以选择指标倾向于胸径。
대10년생화7년생적량괴삼목무성계시험림력년생장자료진행분석연구，득출결과：종제2년기무성계고、경생장량적F치、방차분량、중복력명현증대，병개시추우은정，무성계중복력교고，개우0.65～0.90지간거다。종3～4년생기，각년령수고、흉경여근기대응성상적상관계수，이급여근기재적적상관계수증대，지추우은정。3～4년생후각년령수고、흉경상관신식량역표현출여상관계수동양적추세。유전상관계수대우질차、표형、배경상관계수，표명년령간생장적상관주요수유전공제，무성계조기선택시유효적。조기선택최가년령，수주벌년령적불동이유소차이，단개우3～4 a지간。선택효솔D조-V만고우H조-V만，전자출현최대선택효솔적년령조우혹등우후자，소이선택지표경향우흉경。
The growth of 2 clonal plantation (7 and 10 years old) were measured and analyzed. The results showed that the F values of height and diameter increment, the component of variance and repeatability increased significantly and tended to be stabilized in the second year after planting. The repeatability of clone was between 0.65 and 0.90. From the third year on, both the correlation coefficient of height, DBH and the lately corresponding character and the correlation coefficient of height DBH and lately volume became higher and tended to be stabilized. The genetic correlation coefficient is larger than the coefficient of order, phenotype and environment. This showed that the growth correlation coefficient is mainly controlled by heredity, and early selection is effective. The best age of early selection is at 3rd and 4th year. The selective efficiency of early D-late V is higher than that of early H-late V, and the age of the former which has the biggest selective efficiency emerges earlier than that of the later. So the DBH is an efficient selective index.