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１９８８年在腾冲县古永林场采用完全随机区组设计开展试验。通过７年的观测，试验已显示出天然优良林分子代具有干型通直、木纹理扭转度小、生长量大的特点，其树高、胸径、材积和木纹理扭转度的实际增益分别达到３７４９％、６５６０％、２１９８４％和２６９５７％，遗传增益分别为２０１４％、４０４６％、１０７１１％和５９７９％，目前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“云南松天然优良林分选择方法及标准（滇西）”具有科学性和可靠性。
In 1988, Tengchong County Yong Yong farm completely randomized block design to carry out experiments. Through 7 years of observation, the experiments have shown that the natural superior forest progeny have the characteristics of stem straight, low twist of wood texture, and large growth. The actual gain of tree height, DBH, volume and twist of wood texture respectively reach 3749%, 6560%, 21984% and 26957%, respectively. The genetic gains were 2014%, 4046%, 10711% and 5979% respectively, far exceeding that of Yunnan Pine fine natural forest progeny genetic gain of 3% of the key assessment indicators. Through the experimental feedback, it is proved that the method and standard for selecting natural superior stand of Yunnan Pinus yunnanensis is scientific and reliable.