| 杉木种子园冠幅指数与产量的关系 |
| |
| 引用本文： | 方乐金. 杉木种子园冠幅指数与产量的关系[J]. 南京林业大学学报(自然科学版), 2000, 24(5): 53-55 |
| |
| 作者姓名： | 方乐金 |
| |
| 作者单位： | 安徽省黄山林业学校,安徽,黄山,245000 |
| |
| 基金项目： | 国家“九五”攻关项目!“杉木多世代遗传改良及建筑材优良无性选育”子专题部分内容 |
| |
| 摘 要： | 以冠幅指数为综合指标，分析了杉木种子园冠幅指数的构成状况及与种子产量的关系。在冠幅指数２．５～４．５之间为母树生殖生长的最佳状态，并以平均最佳冠幅指数３．５为控制目标，制订了随树冠高度、半径变化的最适保留密度，可简便、有效、准确地调节种子园密度，为种子园树木生长环境的综合控制提供了新方法。
|
| 关 键 词： | 杉木种子园 冠幅指数 种子产量 密度控制 |
| 修稿时间： | 2000-07-05 |
A Study on the Relationship between Crown Index and Seed Yield in Chinese Fir Orchard |
| |
| FANG Le-jin. A Study on the Relationship between Crown Index and Seed Yield in Chinese Fir Orchard[J]. Journal of Nanjing Forestry University(Natural Sciences ), 2000, 24(5): 53-55 |
| |
| Authors: | FANG Le-jin |
| |
| Abstract: | Based on the investigations in Chinese fir orchard,crow index can be used, as a comprehensive index, to describe the state of tree growth this paper analyzed the relationship between stand growing, especially crown dynamics,and seed yields.The results indicated that while crown index was between 2.5 and 4.5,the seed tree could produce more seeds,and the optimum crown index was 3.5. On the basis of result in this paper,the stand density in the Chinese fir orchard could be controlled easily,effectively and correctly according to variations in crown heights and crown diameters. |
| |
| Keywords: | Chinese fir orchard Crown index Seed yield Density control |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
