冀中南小麦/玉米轮作氮素循环及高效利用研究  

Nitrogen Cycling and Efficient Utilization of Wheat and Maize Rotation in Middle and South Area of Hebei Province

作　　者：李娟茹 李月华[1] 丁月芬[1] 赵锁辉 王志辉 许永红[1] 左秀丽[1] 

机构地区：[1]石家庄市农业技术推广中心,河北石家庄050051 [2]赵县农业技术推广中心,河北赵县051430 [3]藁城市农业局,河北藁城052160

出　　处：《安徽农业科学》2013年第29期11685-11686,11708,共3页Journal of Anhui Agricultural Sciences

基　　金：石家庄市科技局科技支撑计划课题(11149152A);河北省小麦产业化体系项目

摘　　要：[目的]为小麦/玉米轮作体系的氮素优化管理提供依据。[方法]在冀中南小麦/玉米轮作体系自然生产条件下,对2 m土体氮素循环及盈亏变化进行研究。[结果]小麦/玉米轮作周期氮素变化呈"M"型;氮素纵向移动性较强,深层土壤仍含有较高量氮素。[结论]在当前生产条件下,小麦/玉米轮作氮素循环呈盈余状态,氮肥施用应以减、控为主。[Objective] The research aimed to provide the basis for nitrogen optimal management of wheat and maize rotation. [ Method] Under the natural production condition of wheat and maize rotation in middle and south area of Hebei Province, the nitrogen rotation and profit and loss in 2 m soil mass were studied. [ Result] The change of nitrogen cycling in wheat and maize rotation showed M shape. The mobility of nitrogen in the length direction was strong. And the content of nitrogen in the deep layer was high. [ Conclusion] Under the current production condition, the nitrogen cycling of wheat and maize rotation was surplus. And more attention should be paid in the reduction and the control of the nitrogen application.

关 键 词：小麦 玉米轮作 氮素 循环 

分 类 号：S512.1[农业科学—作物学]