冀中南小麦/玉米轮作土壤磷素周年循环及高效利用研究  

Study on the Annual Cycle and Efficient Utilization of Phosphorus in Wheat and Maize Rotation Soil of Centralsouth of Hebei Province

作　　者：李娟茹 李月华[1] 许永红[1] 李建波[2] 赵军华 张广辉[1] 刘亚 

机构地区：[1]石家庄市农业技术推广中心,河北石家庄050051 [2]藁城市农业技术推广中心,河北藁城052160 [3]赵县农业技术推广中心,河北赵县051530

出　　处：《河北农业科学》2014年第3期48-51,共4页Journal of Hebei Agricultural Sciences

基　　金：国家科技支撑计划项目(11149152A);河北省小麦产业化体系项目

摘　　要：在冀中南地区小麦/玉米轮作制度自然生产条件下,对2 m土体磷素周年循环及盈亏变化进行了研究,并提出了磷素高效利用的施用方法。结果表明:小麦/玉米轮作土体磷素含量周年变化呈"M"型;磷素纵向移动性差,多累积于耕层,周年变化幅度随土层的加深而变小;当前生产条件下,小麦/玉米轮作磷素循环呈盈余状态,磷肥施用应以减为主,在施用上以全部或重施于小麦效果较好。Under the natural production conditions of wheat and maize rotation system in central-south of Hebei Province, the annual cycle and loss changes of phosphorus in 2 m soil were studied and the phosphorus application methods for efficient utilization was put forward.The results showed that the annual variation of phosphorus content showed M type in wheat and maize rotation system , phosphorus longitudinal movement was poor , which mostly accumulated in the topsoil, and the annual variation amplitude was smaller with the deepening of the soil.Under current production conditions, phosphorus cycle showed a surplus state in wheat and maize rotation system , phosphate fertilizer should be reduced based on application or re-applied to the whole wheat.

关 键 词：小麦 玉米轮作 磷素 周年循环 高效利用 

分 类 号：S147.5[农业科学—肥料学]