【摘要】 通过对１１种竞争指标及其与胸径生长量相互关系的分析，将竞争指标划分为四类，它们从不同侧面反映了个体竟争状况，个体竞争能力取决干自身在群体中的相对位置及生长发育状况和邻体对它的干扰程度。逐步回归分析表明，阳冠比率是影响马尾松生长的主导因子。文中还建立了主要竞争指标如生长空间指数、邻休干扰指数、阳冠比率与胸径生长量的数学模型，并对这些模型的生态学意义及其在营林中的应用进行了初步探讨．更多还原

【Abstract】 Through the analysis of relationship between competition index and breastheight diameter increment, 11 competition indexes were divided into 4 types, they response competition situation of individuals from diference ways, and the individual competition abiity is determined by its relative position in the colony, growth situation and the degree of neiborhood interference. The resuts of stepwise regression show that Yang-guan ratio is the main factor for the growth of Pinus massoniana. The models between increment and competition indexes such as growth space index, neighborhood interference index,Yang-guan ratio were built and the ecology meaning and the application of the models in the forest management were studied in the paper.更多还原