水田土壤养分对泥鳅扰动的响应  

Research on Diurnal Variations of Photosynthesis of Zizyphus mauritiana Lam under Different Soil Moisture in Dry-hot Valley of Yunnan

作　　者：杨立国 孙刚[2] 潘希波 房岩[2] 陈彬 胡鹏宇 

机构地区：[1]吉林省农业环境保护与农村能源管理总站,吉林长春130021 [2]长春师范学院生命科学学院,吉林长春130032

出　　处：《安徽农业科学》2011年第7期3884-3885,共2页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(31070421);人力资源和社会保障部留学人员科技活动择优资助项目(人社厅发2008-86);吉林省人才开发资金项目(吉财行指2007-259);吉林省科技发展计划项目(20060577);吉林省教育厅科技计划项目(2010150;2009435;2006113;2007169);教育部留学回国人员科研启动基金项目(教外司留2005-546);长春师范学院自然科学基金(2009002);吉林省环境保护厅科技项目(吉环科字第2010-19号)

摘　　要：[目的]研究水田土壤养分对泥鳅扰动的响应。[方法]通过野外定期取样,采用常规理化方法测定在养鱼水田和对照水田中土壤有机质、氮素、磷素、钾素的含量。[结果]养鱼水田土壤有机质含量、土壤速效氮含量、土壤速效磷含量在0.05水平显著高于对照水田。养鱼水田土壤全氮含量、土壤全磷含量、土壤全钾含量和土壤速效钾含量与对照水田间不存在差异。[结论]底栖鱼类泥鳅改善了水田土壤养分状况,尤其提高了土壤有机质、土壤速效氮和土壤速效磷的含量。[Objective]The research aimed to compare the difference of diurnal variations of of photosynthesis of Zizyphus mauritiana Lam under different soil moisture.[Method] Photosynthetic parameters in leaves of two-planted Zizyphus mauritiana Lam in dry-hot valley of Yunnan were determined.[Result] The curves of diurnal variation of Pn,Tr and Gs were typical double-peaked,and three factors were decreased gradually with the decrease of SWC.The change of Pn was related mainly to stomatic factors.[Conclusion] Under four different soil moisture,the best soil moisture with photosynthesis was mesh word sulcus buried grass furrow irrigation＋soil surface death cover.

关 键 词：土壤养分 水田 有机质 泥鳅 

分 类 号：S158.5[农业科学—土壤学]