京稻１９的选育洪立芳陈宝红毛振武李增高刘艳平（北京市农林科学院作物所１０００８１）冯继德芦金华（北京市双桥农场黑庄户科技站）在华北平原北部两年三熟稻区需要优良的早熟一季稻品种（早熟春稻或中稻），以利于小麦的适时播种，这类品种兼做麦茬稻长秧龄（老秧）或... Breeding of Jingtai 19 Honglifang Chen Baohong Mao Zhenwu Li Zengao Liu Yanping (Beijing Academy of Agriculture and Forestry Crops Institute 100081) Feng Jide Lu Jinhua (Beijing Shuangqiao Farm Hezhuanghu Science and Technology Station) In the northern part of North China Plain three years of rice needs good early season Rice varieties (precocious spring or medium rice), in order to facilitate the timely sowing of wheat, such varieties concurrently as long stubble wheat stubble age (old seedling) or ...