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第 1期关于北京农业生产结构战略性调整的几个理论与实际问题的探讨袁士畴 (3)………………北京市农业结构调整应遵循的十个原则郭建强 赵秋菊 (7)……………………………北京市农业信息化现状及分析张峻峰 孙素芬 郭建强等 (10 )……………“冬小麦新品种京冬 8号的选育与
No. 1 on the strategic adjustment of agricultural production in Beijing several theoretical and practical issues Yuan Shizhong (3) .................. Beijing to adjust the agricultural ten principles should be followed Guo Jianqiang Zhao Qiuju (7) ............ ...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................