...《食用菌》 《食用菌》多次获得上海市和全国优秀科技期刊奖，并被定为全国园艺类核心刊。 树冠率 树冠率(Crown ratio )是冠长与树高的比值。 树木园 树木园 - 树木园 arboretum是指 搜集 种植 树木的园地。
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live crown ratio 小活冠比
crown-implant ratio 种植体比 ; 冠
Crown-to-Root Ratio 修复体冠根比例 ; 种植修复体冠根比例 ; 冠根比例
crown root ratio 冠根比例
crown length ratio 冠厚树高比
crown-fullness ratio 树冠圆满度
crown diameter ratio 冠径树径比
Ratio of height and diameter, crown and root, of root cutting seedling were strong with more fibrous root, and higher rate of fungus root infection than untreated normal field seedlings.
切根苗的高径比与冠根比均在壮苗的适宜范围内，须根数量多，菌根感染率高，均明显优于未切根的普通大田亩，这将有效地提高造林质量。
Results: the success ratio of the reparation of two kinds of pile nuclear crown have not significant difference, but the miss ratio of the break of pile nuclear has obviously difference.
结果两种桩核冠修复成功率无显著性差异，失败率仅桩核折断有显著性差异。
The study showed that under the double CO2 concentration, sufficient nitrogen, and no other condition stress, the ratio between root and crown can not be affected by elevated CO2 concentration.
对红皮云杉与白扦研究表明，在CO_2浓度倍增条件下，氮素营养供应充足，其他条件不受到限制时，植物的根冠比不受到大气CO_2浓度升高的影响。
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