| 引用本文: | 邹国燕,宋祥甫,吴伟明,金千瑜,应火东.浮体栽培陆生高等植物对农业富营养化水体的净化作用.湖泊科学,1998,10(s1):539-547. DOI:10.18307/1998.sup54 |
| ZOU Guoyan,SONG Xiangfu,WU Weiming,JING Qianyu,YING Houdong.Study on Purification of Culturally-Eutrophicated Water Bodies by Terrestrial Higher Plants Planted on Floating Beds. J. Lake Sci.1998,10(s1):539-547. DOI:10.18307/1998.sup54 |
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| 摘要: |
| 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. |
| 关键词: Rice on floating-beds Eutrophication Coverage Net removal rate of N and P |
| DOI：10.18307/1998.sup54 |
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| Study on Purification of Culturally-Eutrophicated Water Bodies by Terrestrial Higher Plants Planted on Floating Beds |
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ZOU Guoyan, SONG Xiangfu, WU Weiming, JING Qianyu, YING Houdong
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China National Rice Research Institute, 310006 Hangzhou, China
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| Abstract: |
| 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. |
| Key words: Rice on floating-beds Eutrophication Coverage Net removal rate of N and P |
