直播稻氮素营养特性及合理施氮方法

摘要

重点对直播稻的氮素营养特性及合理施氮方法进行了阐述，详细介绍了直播稻氮素吸收特征及其氮素吸收利用影响因子的研究进展，并综述了直播稻合理施氮方法的研究概况，最后提出了农业规模化经营方式下直播稻氮肥施用技术研究的重点方向。%The study focused on characteristics of nitrogen nutrition and optimal nitrogen application, detailed characteristics of nitro-gen uptake and influence factors of nitrogen uptake and utilization for direct-seeded rice, and reviewed research profile on optimal nitrogen application for direct-seeded rice. At last, the article puts forward the future key research direction of nitrogen application technology for direct-seeded rice under agricultural scale management.