控释尿素和普通尿素配施对夏玉米土壤无机氮转化的影响  

Effects of Combined Application of Controlled-release Urea and Common Urea on the Inorganic Nitrogen Transformation in Soil Inorganic Nitrogen of Summer Maize

作　　者：李敏[1,2,3] 郭熙盛[1,2] 叶舒娅[1,2] 刘枫[1,2] 

机构地区：[1]安徽省农业科学院土壤肥料研究所 [2]安徽养分循环与资源环境省级实验室 [3]安徽农业大学

出　　处：《河北农业科学》2009年第10期32-34,共3页Journal of Hebei Agricultural Sciences

基　　金：安徽省科技攻关项目(0701030215)

摘　　要：采用盆栽试验方法,模拟田间生态环境,研究了不同比例控释尿素与普通尿素配施对夏玉米整个生育期土壤NH4+-N和NO3--N变化的影响。结果表明:旱作夏玉米栽培条件下应用控释尿素,土壤中NH4+-N含量保持在较稳定水平,可有效降低NO3--N淋失损失,减少对环境的污染。基于成本等综合考虑,推荐普通尿素和控释尿素混施作基肥,比例为普通尿素55%、控释尿素45%。The effects of combined application of controlled-release urea and common urea on the changes of NH4^＋-N and NO3^--N in Soil in the whole growth period of summer maize were studied by pot culture experiment.The results showed that the application of controlled-release urea in dry-land summer maize could make the content of NH4^＋-N maintain at constant level,decrease the leaching of NO3^--N and reduce the environmental pollution.55% common urea and 45% controlled-release urea were recommend as the base fertilizer based on cost considerations.

关 键 词：夏玉米 控释尿素 盆栽 铵态氮 硝态氮 

分 类 号：S513[农业科学—作物学]