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引用本文:高光,胡文英,李宽意.氮、磷等营养物质对低洼盐碱地鱼塘水质的影响.湖泊科学,2001,13(4):345-350. DOI:10.18307/20010409
GAO Guang,HU Weny ing,LI Kuanyi.The Effects of Nitrogen and Phosphorus on Water Quality of the Low-wetland Fishponds. J. Lake Sci.2001,13(4):345-350. DOI:10.18307/20010409
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氮、磷等营养物质对低洼盐碱地鱼塘水质的影响
高光, 胡文英, 李宽意
中国科学院南京地理与湖泊研究所, 南京 210008
摘要:
通过在实验围隔中添加不同浓度的氮、磷等营养物质,对黄淮海平原低洼盐碱地鱼塘中的水质变化情况进行了初步研究,结果表明:1)围隔水体中异养细菌数量的变动,与水体中氮、磷等营养物质的浓度及比例密切相关,尤其是水体中磷的浓度对异养细菌数量的影响更为显著.2)围隔水体中的氮、磷等营养浓度及比率,明显地影响着其中藻类的数量和生物量.在实验条件下,水体中磷对藻类生长的影响要大于氮对藻类生长的影响.水体中N:P比为10:1左右是比较适宜藻类生长的比例.3)围隔水体中氮、磷等营养盐的去除能力与其中藻类的生物量及水体中N:P的比率密切相关.当围隔水体中的N:P比为10:1左右时,围隔水体中的藻类生长最好,生物量增加最快,相应地其对TN、TP的去除率也是最高的.
关键词:      营养物质  鱼塘  水质
DOI:10.18307/20010409
分类号:
基金项目:国家"九五"攻关课题(95-008-04-02)
The Effects of Nitrogen and Phosphorus on Water Quality of the Low-wetland Fishponds
GAO Guang, HU Weny ing, LI Kuanyi
Nanjing Institute of Geography and Limnology, Ch inese Academy of Sciences, Nanjing 210008, P. R. China
Abstract:
The variance of water quality was studied by adding different concent ration of nitrogen and phosphorus into the tested enclosure.The results show that:(1)There existed strong relationship between the hetero trophic bacteria abundance and the concentration of ni trogen and phosphorus, especially the phosphorus.(2)The nitrogen and phosphorus concentration and ratio of N to P significantly affected the algae abundance and biomass.The suitable N:P value for algae grow th was 10:1.(3)There existed signif icant relationship between the ni trogen and phosphorus removing capacity and the algae biomass and the N:P value.When the N:P value was 10:1, the algae grew well and the biomasses were increased most quickly.In this case, the nitrogen and phosphorus removing capacity was the highest.
Key words:  Nitrogen  phosphorus  nutrient  low-w etland fishponds  water quality
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