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《Journal of Soil and Water Conservation》 2007-02
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Effect of Several Controlled/Slow-Release Fertilizers on Decreasing Ammonia Volatilization and N Leaching

DU Jian-jun1,2,WU Yong-long2,3,TIAN Ji-lin4,WANG Yi-quan3,Cui Ying-de5 (1.Faculty of Electromechanical Engineering,Guangdong University of Technology,Guangdong,Guangzhou 510090;2.Lab.of Plant Nutrition and New Fertilizer,Zhongkai University of Agriculture and Technology,Guangzhou ,Guangdong 510225;3.College of Resources and Environment,Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100;4.Ecology Inst.,Shanghai AAS,Shanghai,201106;5.Department of Chenistry & Chemical Engineering,Guangzhou,Guangdong 510225)  
Static absorption and soil column leaching methods were used to study ammonia volatilization and N leaching characteristics from six controlled/slowrelease fertilizers.The results showed that all the controlled/slow-release fertilizers decreased ammonia volatilization and N leaching in varying degrees.Total ammonia volatilization of six controlled-release fertilizers decreased by 16.62%,23.78%,32.15%,0.11%,16.59% and 37.78% than common urea respectively,and N leaching amount of the fertilizers decreased by 15.84%,38.27%,68.87%,46.17%,52.51% and 62.01% than common urea respectively.The results also indicated that ammonia volatilization from controlled/slow-release fertilizers was closely related to soil urease activity and pH value.
【Fund】: 上海市科技兴农重点攻关项目[农科攻字(2002)第4-3-5号];; 国家高技术研究发展计划(863计划 2001AA246023)项目
【CateGory Index】: S145.6
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