草业学报2013，Vol.22Issue(1)：294-299,6.
水生植物的氮磷吸收能力及收割管理研究
Absorption capacity of nitrogen and phosphorus of aquatic plants and harvest management research
摘要
Abstract
In order to investigate the fact how harvesting aquatic plants affects the removal of nitrogen and phosphorus. Canna glauca , Hydrocotyle vulgaris , Sparganium stoloniferum , Myriophyllum verticillatum and Juncus effusus were selected for the study in ecological ditch, absorption capacity of nitrogen and phosphorus were tested and each plant was divided into harvested and non-harvested plots. The results showed that, seasonal dynamics of the uptake of total nitrogen and phosphorus by aquatic plants changed in a single-peak curve, C. glauca is highest, the absorption capacity peak value of nitrogen and phosphorus were 75. 97 and 13. 52 g/m2, respectively; Removing biomass, total nitrogen and phosphorus of aquatic plants through repeated cutting were several times single cutting, the changes in the range of 3. 62 - 6. 72 times. In addition to S. stoloniferum , the harvest can improve the removal rate of nitrogen and phosphorus in sediment of other aquatic plants. Compared with the non-harvested plot, the harvest can improve the removal rate of sediment total nitrogen and phosphorus in the following order: C. glauca＞M. verticillatum＞H. vulgaris＞J. effusus＞S. stoloniferum. Therefore, appropriate harvest measures can not only transfer nutrients of plants, but also conducive to the recovery and growth of plants and improve the removal rate of sediment total nitrogen and phosphorus.关键词
生态沟渠/水生植物/收割/氮/磷Key words
ecological ditch/ aquatic plants/ harvest/ nitrogen/ phosphorus分类
农业科技引用本文复制引用
余红兵,杨知建,肖润林,张树楠,刘锋,向佐湘..水生植物的氮磷吸收能力及收割管理研究[J].草业学报,2013,22(1):294-299,6.基金项目
中国科学院知识创新工程项目(KZCX2-YW-T07),外国专家局项目(20100491005-8)和益阳市科技计划项目(2012JZ52)资助. （KZCX2-YW-T07）
