摘要
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。
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. \ \
出处
《林业科学》
EI
CAS
CSCD
北大核心
1998年第5期38-44,共7页
Scientia Silvae Sinicae
基金
国家重点科技攻关专题
关键词
云南松
优良林分
子代测定
授粉
混合种子
松树
Pinus yunnanensis , High-quality stands, Progeny test, Genetic gain
