论文部分内容阅读
通过对秃杉苗高、地径、主根长等7个指标间的相关性分析,其结果是苗高与主根长、全苗鲜质量、针叶数;地径与全苗鲜质量、主根长的相关程度极高;而苗高与侧根数、地径与侧根数和针叶数相关性较小。苗高和地径与主根长相关程度虽然较高,但不易操作。而针叶数与苗高和地径的相关程度也较高。因此,苗木分级的主要指标定为苗高、地径和针叶数。
According to the correlation analysis of the seven indexes of seedling height, diameter and main root length, the results showed that the height of seedling and main root length, the fresh weight of whole seedling, the number of needles, the diameter and fresh weight of whole plant, The degree of correlation is very high; while the height of seedlings and lateral root number, diameter and lateral root number and the number of needle less correlation. Although the correlation between seedling height and root diameter and main root length is high, it is not easy to operate. The number of needles and seedling height and diameter of the higher correlation. Therefore, the main indicators of seedling grading as seedling height, diameter and needle number.