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前言油松(Pinur tabulaeformis Carr)是我国北方的主要造林树种之一,分布很广,达及亚热带、暖温带、寒温带三个不同气候带的12个省(区)。我省南至巴山,北至黄龙、乔山,都有大面积天然林。由于各地天然选择压力不同及地理隔离和小群体作用,产地间存在着程度不同的遗传差异,形成了丰富的森林基因资源。据报导,中国科学院林土所1972年在辽宁省新民林场进行的油松24个产地两年苗期试验结果表明,各产地生长差
Introduction Pinus tabulaeformis Carr is one of the main afforestation species in the north of China. It is distributed widely and reaches 12 provinces (districts) in three sub-tropical, warm and cold temperate climates. South of our province to Bashan, Huanglong North, Joe Hill, have a large area of natural forest. Due to the different pressures of natural selection in different places, the geographical isolation and the role of small groups, there are different genetic differences among producing areas, forming rich forest genetic resources. According to the report, the results of two years seedling experiment of 24 provenances of Pinus tabulaeformis in Xinmin Forest Farm,