通过对样地水曲柳天然林的各器官生物量的测定和化学元素分析，研究了生物生产力及营养元素的积累与分布规律。
The accumulation and distribution rule of productivity and nutrient element were studied by determining the biomass and chemical element in different organs above ground of sample trees.
在实验室条件下，用厌气培养的方法测定了两种水稻土的甲烷生产力。
Methane productivity of two rice soils were investigated under laboratory condition using anaerobic incubation method.
用显微镜检与黑白瓶测氧法测定滩涂鱼塘藻类种群及初级生产力。
Microscopy and the method of black and white bottle were used to study algae population and primary productivity in coastal fishpond.
应用推荐