一、来源:是我院粮食作物所从“郑粳12”变异株系统选育成的新品系,属中晚粳类型。二、试验示范效果:1979—1980年经穗行观察鉴定试验,和郑州郊区、偃师佃庄等地试种,该品系亩产1185—1404.3斤,比郑粳12和新稻68～11增产2.8—28.2％,且略早2—4天抽穗。1981年全省(北起林县南至确山)联合区域试验,12处平均亩产1016.78斤,属首位,比对照 First, the source: is our hospital food crops from the “Zhengjing 12” mutant system selected into a new line, is a middle-late japonica type. Second, the experimental demonstration effect: From 1979 to 1980 by the ear observation and identification test, and Zhengzhou suburbs, Yanshi Dianzhuang and other places of trial, the strain per mu 1185-1404.3 kg, compared with Zhengjing 12 and new rice 68 ~ 11 yield 2.8-28.2%, with heading 2-4 days earlier. In 1981, the province (North from Linxian South to the real mountain) joint regional test, 12 average yield of 1016.78 kg, is the first place, compared with the control