Acacia dealbata and Alnus cremastogyne were selected as the species with quite fast growth on 3 indexes of tree height, ground diameter and crown mean width.
通过各树种在该立地类型上生长曲线的比较，评选出圣诞树、水冬瓜在3个生长因子上的生长速度最快。
2
This paper made a dynamic study of the seasonal variation of nutrient elements in the fine roots and soil from Alnus cremastogyme Burk plantations, and of the relationship between them.
对桤木人工林细根、土壤养分含量的季节变化及其两者之间的关系进行了研究。
3
The results suggested that obvious difference of chromosome number appeared among these Alnus species, even in the same species from different population, and spontaneous polyploidy might occur.