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以腾冲古永林场所设的９个云南松天然优良林分固定样地为参试单元，设大理、保山商品种作对照，进行滇西地区云南松天然优良林分半同胞子代测定试验。经７年试验，探讨了子测林生长、材质、结实诸性状的关系；估算了优良林分子代初期的实际遗传增益和主要遗传参数。结果显示：该区云南松天然优良林分子代７年生时树高、胸径、材积和木纹理扭转度的实际增益分别达到：３７．４９％、６５．６０％、２１９．８４％和２６９．５７％；遗传增益分别为：２０．１４％、４０．４６％、１０７．１１％和５９．７９％，已远远超过云南松天然优良林分子代遗传增益３％的攻关考核指标。通过试验反馈表明了所制定的滇西地区云南松天然优良林分选择方法及标准具有科学性和可靠性
Tengchong Panyong Yong nine permanent sites set nine natural sites of Pinus yunnanensis as a sample unit, the Dali, Baoshan commercial varieties as a control, Yunnan yunnanensis natural superior semi-sib offspring test. After seven years of experiment, the relationship between the growth of sub-measure forest, the material quality and the seedy traits was discussed. The actual genetic gain and major genetic parameters of the early generation of excellent forest were estimated. The results showed that the actual gains of tree height, diameter at breast height, volume and twist of wood texture were 37.49%, 65.60%, 219.84% and 269.57 % Respectively. The genetic gains were 20.14%, 40.46%, 107.11% and 59.79%, respectively, far exceeding the 3% genetic predisposition of offspring of natural superior forest of Yunnan Pinus massoniana. The experimental feedback indicates that the method and standard for selecting natural superior stand of Pinus yunnanensis in western Yunnan are scientific and reliable