兴安落叶松天然优良林分选择、改良和促进结实技术

• 作 者: 朴楚炳 刘君
• 出 处: 林业科技
• 发表日期: 1991年05期
• 关键词: 优良林分 兴安落叶松 群体遗传变异 攻关课题 性状指标 遗传品质 经营理论 指数方程 数量指标 选择标准

“兴安落叶松天然优良林分选择、改良及促进结实技术”是国家“六五”、“七五”期间攻关课题。旨在研究选择标准、方法、确定最佳疏伐方式及母树林经营理论与技术,为生产单位提供遗传品质好、产量高的种子。“六五”期间,根据林木群体遗传变异的基础理论,通过性状指标和数量指标建立指数方程;采

“Larch Larix natural selection of good stands, improve and promote strong technology” is the national “Sixth Five-Year”, “Seventh Five-Year” period tackling topics. The aim is to study selection criteria and methods, determine the best way of thinning and management theory and technology of mother trees, and provide the production units with seeds of good genetic quality and high yield. During the “Sixth Five-Year Plan” period, according to the basic theory of genetic variation of tree population, exponential equation is established by trait index and quantitative index;