华北落叶松球花特性研究

• 作 者: 梁建萍 韩有志 梁胜发 杨文广
• 机 构: 山西农业大学!太谷030801,山西农业大学!太谷030801,山西造林局,山西省五台山林场
• 出 处: 山西农业大学学报
• 发表日期: 1998年04期
• 关键词: 华北落叶松 雄球花 雌球花 芽鳞 花粉发育 苞鳞 小孢子叶 雌雄比例 数量比例 关帝山

华北落叶松雌雄花芽于 6月中旬到 7月上旬分化 ,9月中旬雌球花芽顶部变得比雄球花芽尖而光滑 ,且芽鳞向外反卷 ,而雄球花芽的芽鳞未反卷 ,这些可作为雌雄球花花芽早期识别的重要特征。雌雄球花在树冠不同方向和部位的分布是不同的 ,其球花的数量比例为 1 :4～ 1 5 ,它们的开花百分率分别为 85 %和 70 %。

Male and female flower buds of Larix principis-rupprechtii differentiate in mid-June and early July, and the top of the female flower bud becomes more sharp and smooth than the male flower bud in mid-September, and the bud scales roll outwards, while the bud scales of the male flower bud are not rewound , These can be used as an important feature of early identification of flower buds of male and female flowers. The distribution of female and male flowers in different directions and parts of canopy is different. The proportion of the flowers in the crown is 1: 4 ~ 15, and their flowering percentages are 85% and 70% respectively.