black spruce

1. Modelling of air co_2 concentration and flux in/ above a boreal black spruce stand
   北方黑云杉林冠内空气CO2浓度及其上方通量模拟
2. Partial Substitution of Hybrid Larch and Birch for Black Spruce TMP for the Production of Newsprint Grade
   用落叶松和白桦代替部分黑云杉生产新闻纸用TMP
3. Despite less sensitive to mild drought stress in jack pine than in black spruce, stomata was more sensitive to moderate and severe stress in jack pine than in black spruce.
   尽管北美短叶松的气孔对轻度干旱胁迫不如黑云杉敏感，但是它对中度及严重干旱胁迫的敏感程度却高于黑云杉。
4. Effects of Repeated Cycles of Dehydration-Rehydration on Gas Exchange and Water Use Efficiency in Jack Pine and Black Spruce Seedlings
   多重复干旱循环对北美短叶松和黑云杉苗木气体交换及水分利用效率的影响
5. The order of the height growth of 3 Chinese Spruce species during the seedling stage is: White Spruce> Black Spruce> Picea Koraiensis.
   3种云杉以苗期高生长排序为白云杉>黑云杉>红皮云杉。
6. And black spruce ( Picea mariana ( Mill) BSP) were studied in order to understand the adaptation mechanisms employed by the foliage to deal with fluctuations in boreal climatic conditions.
   和黑云杉（Piceamariana（Mill）BSP）树枝气体交换日变化的特性进行了试验研究，以便于了解在北部气候条件下叶对环境变化的适应机理。
7. Explosion Pulping of Black Spruce for the Production of High Yield Pulp
   黑云杉爆破法制高得率纸浆的研究
8. Studying On The Growth Characteristics of The Black Spruce and the White Spruce During the seedling stage
   黑云杉、白云杉苗期生长性状研究

noun

1. small spruce of boggy areas of northeastern North America having spreading branches with dense foliage

   Synonym:    Picea marianaspruce pine