TY - JOUR ID - 10.18307/1998.sup54 TI - 浮体栽培陆生高等植物对农业富营养化水体的净化作用 AU - 邹国燕 AU - 宋祥甫 AU - 吴伟明 AU - 金千瑜 AU - 应火东 VL - 10 IS - s1 PB - 科学出版社 SP - 539 EP - 547 PY - JF - 湖泊科学 JA - UR - http://www.jlakes.org/ch/reader/view_abstract.aspx?file_no=1998s154&flag=1 KW - Rice on floating-beds;Eutrophication;Coverage;Net removal rate of N and P KW - Rice on floating-beds;Eutrophication;Coverage;Net removal rate of N and P AB - Experiments on surface aquaponics were carried out in simulatedly-eutrophicated cement ponds with the concentrations ofkjeldahl nitrogen (KN) 2.084 mg·l-1 and TP 0.248 mg·l-1 and without any interference from natural environment factors. On the surface of ponds rice was planted on floating-beds without soil for the purpose of collecting nutrients (N & P) from water by absorption and adsorption of rice roots. The results show that the design is not only feasible but also very effective. When the coverage of rice on floating-beds were 20%, 40% and 60%, respectively with the water depth of about 1.4 m, the removal rates of KN in water reached 29.0%, 49.8% and 58.7%, respectively and those of TP 32.1%, 42.0% and 49.1%, respectively during the test period of 84 days from tillering to maturing of rice. Other main parameters of water quality were greatly improved. The results provided a scientific basis for surface aquaponics engineering to purify eutrophicated water bodies by planting terrestrial higher plants on floating-beds. ER -