In the Larix Mill,there are evident differences between two groups on the seed coat ornamentation.
运用扫描电镜对中国产的落叶松(属)8个种和9个不同种源的兴安落叶松种皮微形态进行了观察。
The decomposition rate and nutrient dynamics of leaf litters for 8 species of trees was studied, The rates (%)of dry matter loss per year by decomposition were: Pinus elliottii 32.
对 8个树种落叶的分解进行了研究 ,各树种落叶年分解失重率分别是 :湿地松 3 2 。