人工定株有利于水曲柳萌条的生长。

Artificial field planting would benefit the growth of Fraxinus mandshurica.

水曲柳幼苗苗叶片氮含量与供氮水平呈线性相关。

And the results suggested: Machurian Ash seedling leaf nitrogen content is linearly relative to the nitrogen supply levels.

我们选用美国进口红橡，白橡，水曲柳，鹅掌楸，俄罗斯进口的榆木，樟子松都是顶级原生态的优质木材。

We chose the United States imported red oak, white oak, ash, tulip tree, elm Russian imports sylvestris are top quality original ecological timber.

展品：北美硬木板材，地板等。品种包括红橡，白橡，水曲柳，硬枫，软枫，山核桃木，樱桃木，椴木，山毛榉，桦木，波纹软枫，白胡桃，白松木等。

Exhibit: American hardwood lumber and floorings. species include red oak white oak ash hard maple soft maple hickory cherry basswood beech birch curly soft maple butternut white pine etc.

东北地区的大兴安岭、小兴安岭和长白山区，是中国最大的天然林区，到处是望不到边的红松、落叶松、黄花松等针叶林和白桦、柞树、水曲柳、杨树、榆树等阔叶林。

The Greater Hinggan, the Lesser Hinggan and the Changbai mountain ranges in the northeast are China's largest natural forest areas.