中国生态农业学报2012，Vol.20Issue(4)：414-421,8.DOI:10.3724/SP.J.1011.2012.00414
基于DNDC模型的华北典型农田氮素损失分析及综合调控途径
Nitrate loss simulated with DNDC model and control technologies in typical cropland of North China
摘要
Abstract
kg(N)-hm-2a-1, respectively, in the management of traditional practices. Comprehensively analysis of the nitrogen losses, the authors put forward some optimum management practices for its applicability for local agricultural production conditions, which were to reduce 40% of conventional nitrogen fertilizer to 340 kg(N)-hm-2·a-1, to improve the 100% rate of corn straw returned to field, and to keep the conventional irrigation management practice. Compared with conventional management measures, the optimized management measures reduced 71.5% of N leaching to 14.1 kg(N)-hm-2·a-1, 15.8% of N2O emissions to 14.91 kg(N)-hm-2·a-1, and 19.1% of NH3 volatilization to 117.2 kg(N)-hm-2·a-1, and meanwhile maintained the crop yield. The evaluation results could be applied directly to the agricultural production practice.关键词
华北农田/氮淋失/N2O排放/NH3挥发/DNDC模型Key words
North China farmland/Nitrogen leaching/N2O emissions/NH3 volatilization/DNDC model分类
农业科技引用本文复制引用
李虎,王立刚,邱建军..基于DNDC模型的华北典型农田氮素损失分析及综合调控途径[J].中国生态农业学报,2012,20(4):414-421,8.基金项目
公益性行业(农业)科研专项(201103039)资助 （农业）
