小兴安岭森林沼泽植物营养元素积累与分配规律的研究

以小兴安岭典型森林沼泽，兴安落叶松、油桦、苔草沼泽的优势植物为试验材料，探讨了植物营养元素氮、磷、钾的积累与分配规律。５年的研究结果表明，植物不同生长期及不同的中营养元素的积累量不同。萌芽期营养元素的积累量最高，生长期次之，休眠期最少；植物不同器官的营养元素含量以叶中最多，茎次之，根中最少。

On the Distributive and Accumulative Laws of Nutrient Elements in Plants of Forestry Marsh in the Less Xing'''' An Mountains

Takes Larix gmeinil-Betula ovalia-Carex schmidtii that is a amain type of forestry Marshes in lesser Xing'an mountains as experimental object, inquires into regular change patterns of accumulation and distribution. The results from surveying on the fixed spot for five years and analysing the sample of this bog show that the amount of accumulation and distribution of nutritious elements is not same in different growing periods and different organs of plants.The plants require less nutritious elements and accumulate more nutritious elements in the body in the sprouting and mature period of plant than in the growing period.It is least in the withered period for the plants to accumulate nutritious elements.In the same growing period,leaf is higher than stem that is higher than root in respect of accumulating nutritious elements.