秋冬季低温条件下浮床植物氮磷迁移能力的研究  

Study on Nutrient Uptake Ability of Plant Cultivated on Floating-bed in Autumn and Winter

作　　者：郑剑锋[1] 罗固源[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点试验室,重庆400045

出　　处：《三峡环境与生态》2008年第3期38-41,共4页Environment and Ecology in the Three Gorges

基　　金：重庆市科技攻关计划项目(CSTC;2006AB7020)

摘　　要：选取美人蕉和风车草为研究对象,对其在秋冬季低温条件下的氮、磷迁移能力进行研究。研究结果表明:两种植物在低温条件下都能够正常生长,经过3个月的生长,植物生物量均有大幅的增加,两种植物体内氮、磷含量依次为嫩叶>老叶>根部>茎部。试验期间,两种植物浮床在秋冬季低温条件下对氮、磷都有较好的去除效果。经过植物对水体中氮磷迁移能力的分析,美人蕉可以吸收水体中7.2%的氮、30.7%的磷,风车草可以吸收水体中7%的氮、31.2%的磷。Taking Canna indica and Cyperus alternifolius as research objects, nutrient uptake abilities of plants cultivated on floating-bed were studied comparatively in autumn and winter. The experimental results indicated plants could grow in autumn and winter. Three months after planting, biomasses of plants increased; the distributions of nitrogen and phosphorus in plants could be summarized as follows： new leaves〉old leaves 〉 roots〉 stems. During experiment, the removal rates of two plant floating beds were good. By analyzing nitrogen and phosphorus uptake abilities of plants, nitrogen uptake by Canna indica accounted for 7.2% in water, phosphorus uptake by Canna indica accounted for 30.7% ; nitrogen uptake by Cyperus alternifolius occupied 7% in water, phosphorus uptake by Canna indica occupied 31.2%.

关 键 词：浮床 美人蕉 风车草 迁移能力 

分 类 号：X703[环境科学与工程—环境工程]