摘要
采用微电极系统研究了黄颡鱼-水稻共作和黄颡鱼单养两种模式下沉积物-水界面基本理化性质的变化。研究结果表明,与黄颡鱼单养相比,黄颡鱼-水稻共作可使沉积物-水界面附近O2浓度下降速率减慢,O2渗透深度增加71.4%,并使界面Eh值升高,改善塘底沉积物-水界面厌氧状况;黄颡鱼-水稻共作降低了界面附近pH值,比黄颡鱼单养低约一个单位。以上研究结果表明,养殖池塘种植水稻改变了沉积物-水界面的微环境,可能会影响界面物质迁移转化过程。
An experiment was carried out to investigate the physical and chemical variables in sediment-water interface of yellow catfish pond with and without rice planting.The results showed that rice-fish co-cultures slowed down the decrease of O2 concentration around the sediment-water interface,and increase the O2 penetration depths by 71.4%,comparing with fish monoculture pond.Additionally,rice-fish co-culture increased the Eh value,and improved the aerobic condition in the sediment of pond.Rice-fish co-culture also decreased the pH around sediment-water interface.The pH of rice-fish co-culture pond was lower than that of monoculture pond by one unit.These results indicated that rice growing changed the mocroenvironment of the sediment-water interface of fish pond,which may affect the migration and transformation of elements around this interface.
出处
《中国水稻科学》
CAS
CSCD
北大核心
2016年第6期647-652,共6页
Chinese Journal of Rice Science
基金
国家自然科学基金资助项目(31400379)
浙江省自然科学基金资助项目(LY15C030002)
关键词
水稻
养殖池塘
沉积物-水界面
微电极
垂直剖面
rice
fish culture pond
sediment-water interface
microelectrode
vertical profile
