Sample-tree age 标准木龄
tree-age 树龄
seed-tree age 母树年龄
Tree age rings 树龄年轮
mother tree age 母树年龄
tree-age measurement method 测龄法
age of tree 树龄
same-age tree 同龄树
bearing-age tree 结果树
The total nutrient pools per hectare increased with increasing tree age.
每公顷养分储量随林龄增加而增加。
参考来源 - 桉树人工林生态系统中林木生长、养分平衡与地力维护研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The results showed that the shrink of fruit is closely related with fruit development, tree age, branch age, tree vigor, stand site, weather factor, insect attack, management, and variety.
结果表明：枣缩果病的发生与枣果发育期、树龄、枝龄、树势、气象因子、立地条件、虫害、栽培条件及栽培品种有密切关系。
This paper had investigated fiber form and crystalline degree of Larix kaempferi in different tree age and different vertical location within a stem.
为深入了解日本落叶松的纤维特性，该研究对不同树龄和不同部位日本落叶松的纤维形态和纤维素结晶度进行了分析。
Mineral element content and dry rubber content in latex varied with season or tree age, leading to final differences in loss of mineral elements from latex.
橡胶树年龄不同，或在一年中的不同季节，胶乳中矿质元素百分含量和干胶产量均不同，最终导致胶乳中矿质元素的流失量存在差异。
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