研究论文
宋祥甫,邹国燕,吴伟明,金千瑜,应火冬.浮床水稻对富营养化水体中氮、磷的的去除效果及规律研究[J].环境科学学报,1998,18(5):489-494
浮床水稻对富营养化水体中氮、磷的的去除效果及规律研究
- STUDY ON THE REMOVAL EFFECT AND REGULATION OF RICE PLANTS ON FLOATING BEDS TO MAIN NUTRIENTS N AND P IN EUTROPHICATED WATER BODIES
- 基金项目：国家自然科学基金, 日本丰田基金
- 作者
- 单位
- 宋祥甫
- 中国水稻研究所, 杭州 310006
- 邹国燕
- 中国水稻研究所, 杭州 310006
- 吴伟明
- 中国水稻研究所, 杭州 310006
- 金千瑜
- 中国水稻研究所, 杭州 310006
- 应火冬
- 中国水稻研究所, 杭州 310006
- 摘要：采用水域浮床无土种植方法,以人工模拟池为试验场所,在池内的富营养化水体(KN和TP含量分别为2.084和0.248mg/L)表面种植水稻,通过水稻的吸收和吸附作用,去除水体中的N、P元素,以实现变废为宝,净化水质,并使水体产生良性循环。研究表明,在水深1.4m左右,水面的浮床覆盖率分别为20%、40%、60%条件下,通过水稻自分蘖至成熟历时84天的处理,对全池水体中KN的净去除率分别为29.0%、49.8%和58.7%, TP的净去除率分别为32.1%、42.0%和49.1%.试验结果为利用浮床陆生植物治理富营养化水域提供了科学依据。
- Abstract：Experiments were carried out in artificially eutrophicated water bodies in cement ponds with the concentrations of TP at 0.248 mg/L and KN at 2.084 mg/L and without any interference from natural environment. On the surface, rice was transplanted on floating beds for the purpose of removing nutrients from water by adsorption of rice roots so that excessive nutrients could be utilized usefully. At the meantime, water could be purified and the benign recycling of water bodies could be maintained. When the floating bed coverage rates were set up at 20%, 40% and 60% in about 1.4 m of water depth, for the period of 84 days from tellering to harvest stage, the removal rates of TP and KN in water reached 32.1%, 42.0% and 49.1%, 29.0%, 49.8% and 58.7%, respectively. The results show that the design is not only feasible but also effective, providing the scientific basis for applying terrestrial economic plants on flaoting beds to purify eutrophicated water bodies.
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