Impact of Rice-Catfish/Shrimp Co-culture on Nutrients Fluxes Across Sediment-Water Interface in Intensive Aquaculture Ponds
文献类型： 外文期刊
作者： Liu Yaobin 1 ; Qin Lin 3 ; Li Fengbo 1 ; Zhou Xiyue 1 ; Xu Chunchun 1 ; Ji Long 1 ; Chen Zhongdu 1 ; Feng Jinfei 1 ; Fang Fu 1 ;
作者机构： 1.China Natl Rice Res Inst, Hangzhou 310006, Zhejiang, Peoples R China
2.Univ Liege, Integrated & Urban Plant Pathol Lab, B-5030 Gembloux, Belgium
3.Sichuan Acad Agr Sci, Anal & Determinat Ctr, Chengdu 610000, Sichuan, Peoples R China
关键词： sediment-water interface; rice-fish co-culture; eutrophication; nitrogen and phosphorus recycling; aquaculture
期刊名称：RICE SCIENCE （ 影响因子：3.333； 五年影响因子：4.226 ）
ISSN： 1672-6308
年卷期： 2019 年 26 卷 6 期
页码：
收录情况： SCI
摘要： Exchange of nitrogen and phosphorus across sediment-water interface plays an important role in the management of nutrient recycling in the aquaculture pond. In this study, a plot experiment was conducted to study the effect of rice-catfish/shrimp co-culture on the micro-profile of oxygen (O-2), pH and nutrient exchange across sediment-water interface in the intensive culture ponds. The results showed that rice-catfish co-culture increased the concentration and penetrating depth of O-2, but decreased the pH value across the sediment-water interface, compared with catfish monoculture. Additional rice cultivation significantly reduced the flux rates of ammonium (NH4+) and nitrate (NO3-) across sediment-water interface in the catfish and shrimp ponds. The flux rates of NO2- and soluble phosphorus (PO43-) showed no significant difference between rice-catfish/shrimp co-culture ponds and catfish/shrimp monoculture ponds. Rice only affected the dissolved inorganic nitrogen and phosphorus fractions in the sediment. The concentrations of NH4+ were significantly lower in the sediment of co-culture ponds than in the monoculture ponds. Additional rice cultivation also significantly reduced the content and percentage of dissolved inorganic phosphorus in the sediment of catfish ponds.
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