云南松天然优良林分自由授粉混合种子子代测定

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％，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。

A STUDY ON THE OPEN POLLINATION SEEDS PROGENY TEST OF THE ORIGINAL HIGH-QUALITY STANDS OF PINUS YUNNANENSIS

The major aim of this test is that the actual increment and main genetic parameter of the original high-quality stands were evaluated by testing progeny of Pinus yunnanensis, so as to examine "The Selection Method and Criterion of District (Western Yunnan) of The Original High-quality Stands of Pinus Yunnanensis ". The authors adopted completely random district-group design to carry out the test in Guyong Forest Farm of Tengchong County in 1988. The results from the continous seven-year investigation show that the progeny of the original high-quality stands have the characteristics of straight tree-trunk, minor twinst degree of grain on wood,high growth increment, the actual increment of the tree height, DBH, volume of timber and twinst degree of grain reached respectively 37.49%,65.60%,219.84% and 269.57%,their genetic gain reached respectively 20.14%,40.46%, 107.11% and 59.79%, their genetic gain reached respectively 20.14%,40.46%, 107.11% and 59.79%. The data mentioned above have far exceeded 3% of tackling-key-problem check-up index of progeny genetic gain of original high-quality stands of pinus yunnanensis. The test feedback indicates that "The Selection Method and Criterion (western Yunnan) of the Original High-quality Stands of Pinus yunnanensis " is scientific and reliable. \ \