Evaluation of the Ornamental Characteristics of Camellia hainanica Single Plant Based on Tree Morphological Characteristics

In this study, Camellia hainanica's branch spot, branch type, leaf density, leaf color, the degree of lack of crown, the average length of the first branch and other factors to evaluate the evaluation of C. hainanica's single tree ornamental characteristics of the tree morphology evaluation model, in order to expand the potential of C. hainanica in the application of ornamental gardens and greening. The results are as follows: construct a comprehensive evaluation model of C. hainanica tree morphology index: S=0.346S₁ + 0.105S₂ + 0.099S₃ + 0.089S₄ + 0.086S₅ + 0.081S₆ + 0.073S₇, which results in the range of the comprehensive scores of C. hainanica single tree morphology of −1.24–1.99; at the same time, screened out the volume of the tree crown and the color of the leaves as the key ornamental characteristic factors. Based on the tree morphology score, C. hainanica single tree ornamental characteristics were divided into grades, of which 45 plants were superior, 96 plants were good, 59 plants were average, and the model predictions were accurate and reliable through cross-validation; The comparison of C. hainanica management modes in the resort and the nursery shows that both have their own advantages in ornamental characteristics.