剑湖湿地微齿眼子菜对环境氮素变化的响应  

Response of Submerged Plant Potamogeton maackianus upon Environment Nitrogen in Jian Lake

作　　者：李雪梅[1] 马长乐[1] 敖新宇[1] 陈玉惠[1] 

机构地区：[1]西南林业大学理学院,昆明650224

出　　处：《湖北农业科学》2013年第7期1522-1525,共4页Hubei Agricultural Sciences

基　　金：国家重点基础研究发展计划(973)前期专项(2010CB434807)

摘　　要：为了了解剑湖湿地沉水植物微齿眼子菜(Potamogeton maackianus A.Benn)对环境氮素的利用情况,测定了不同铵态氮和硝态氮胁迫下微齿眼子菜对环境氮素的响应。结果表明,微齿眼子菜在0～80mg/L NH4Cl和0～320 mg/L的KNO3环境中均能正常生长,且外观无明显变化;对铵态氮、硝态氮具有较强的吸收能力,且对铵态氮的吸收能力优于硝态氮;根据微齿眼子菜对环境氮素的响应可以看出,微齿眼子菜是一种较好的耐受氮、吸收氮和转化氮的水体生态修复植物。Experiment was undertaken to detect the response of submerged plant Potamogeton maackianus A.Benn in Jian lake wetland to environment nitrogen under ammonium nitrogen(NH4+-N) and nitrate nitrogen(NO3--N) stress so as to understand the use of environment nitrogen by P.maackianus.The results showed that P.maackianus could grow normally when the concentration of NH4Cl was 0～80 mg / L and the concentration of NO3-was 0～320 mg / L.P.maackianus had good absorption ability to NH4+-N and NO3--N;and its absorption ability to NH4+-N was stronger than that to NO3--N.P.maackianus is a good submerged plant for ecological restoration as it could tolerant,absorb and convert nitrogen well.

关 键 词：微齿眼子菜(Potamogeton maackianus A.Benn) 总氮 铵态氮 硝态氮 

分 类 号：S[农业科学]