云南松(Pinus yunnanensis Franch.)是我省的主要树种。由于它的适应力强,在良好的环境条件下生长很好,在环境条件较差的地方也能生长,因此在人工造林中占有比较特殊的地位。在以往的造林工作中,种子多采自比较低矮的弯、扭松甚至地盘松,加之人为的选择采伐,致使部分人工林质量不高,弯、扭松比例较大,或者出现地盘松。如何提高造林质量,减少弯、扭松,避免地盘松,是当前造林工作中急待解决的问题。为了研究利用云南松的良种资源,特在一平浪林场选择优树,利用优树种子建立种子园。三年后观察优树子代,发现它们有较强的生长势,有些优树子代性状发生分离,表明这优树是杂合体,有的优树所在的林分边缘有地盘松分布,子代没有分离出地盘松。 Pinus yunnanensis Franch. Is the main tree species in our province. Due to its adaptability, it grows well under good environmental conditions and grows in places with poor environmental conditions, thus occupying a rather special position in afforestation. In previous afforestation work, the seeds were mostly collected from relatively low bends, loose or even loosely ground and man-made cutting results in low quality of some plantations, large proportion of bending and kennels, or loose terrain. How to improve the quality of afforestation, reduce the bending and twisting, and avoid the loose ground are the problems to be solved urgently in afforestation. In order to study the use of elite species of Yunnan pine, especially in a selected forest Langfang excellent tree, the use of superior seed to establish a seed garden. Three years later, we observed the elite progeny and found that they had a strong growth potential. Some elite progeny were segregated, indicating that the elite tree was heterozygous. Some of the elite trees were distributed on the edge of the stands, Generation did not separate loose ground.