摘要
在田间试验条件下,分析了不同施肥管理方式对潮褐土区夏玉米农田N2O排放量的影响。试验结果表明,随施氮量增加,N2O排放量呈递增趋势,二者呈显著正相关;DMPP的施用对减少N2O排放较其它处理有明显效果。实验同时证明田间土壤湿度和温度变化对N2O的排放影响较大。
N2O is one kind of important green- house gases, and its existence also destroyed the atmospheric ozone layer. Researching the emission of N2O under the mode of administration with apply fertilizer differently by using the field test of the summer maize in the meadow - cinnamon soil area. The amount of N2O emission would increase with the quantity of nitrogen input. There was a pretty correlation between the amount of N2O emission and quantity of nitrogen input. N2O emissions have been decreased than others significantly by the DMPP - application. The seasonal variation of N2O emission flux was significantly determined by soil moisture and temperature of maize fields.
基金
国家948重大项目(2003-Z53)
中澳国际合作项目(LWR/2003/039)
关键词
夏玉米
施肥方式
N2O排放
玉米产量
Summer Maize
the Fertilization - Methods
N2O Emission
the Maize Yield
