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马尾松球果在长期的系统发育过程中,产生了形态变异,本文通过对球果变异类型的划分和可靠分析,及其与针叶、冠型、林木生长、子代苗期生长状况等的关系的研究,从而找出马尾松球果的优良类型。一、材料的来源与调查方法于1979年在滁州市常山林场,选立地条件、密度和管理措施基本相同的8块15年生和2块12年生的马尾松标准地,每块面积为0.8
In the long-term systematic development of Pinus massoniana, morphological variation was produced. In this paper, through the classification and reliable analysis of the variation types of cones, and their relationships with conifers, crown types, tree growth, seedling growth status The relationship between the research, to find the excellent type of coniferous cones. First, the source of materials and methods of investigation Changzhou Chuzhou in 1979, the site selection conditions, density and management practices are basically the same eight 15-year-old and two 12-year-old masson pine standard, each area of 0.8