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随着“农业学大寨”运动的深入开展,我县生产条件不断改善,耕作制度不断改革,夏收作物不断发展,一九七四年和一九七五年的夏收作物面积都在八十万亩左右。多年来,由于没有较好的夏播玉米种子,“上茬收,下茬丢”的问题不能得到彻底解决。提供适合夏播的好的玉米杂交组合,已成为我县种子工作上的一个十分迫切的问题。为解决这个问题,我们在地区农科所的协助下,一九七二年从北京和吉林引进了黄3-4、黄141、吉63等几个玉米自
With the deepening movement of “learning from agriculture in Dazhai”, the production conditions in our county have been continuously improved. The farming system has been continuously reformed. The crops grown in summer have kept developing. The crops in summer harvest in 1974 and 1975 were both 800,000 Mu or so. Over the years, the problem of “harvesting on the stubble and stubble on the stubble” can not be completely solved because of the lack of better summer sowing of corn seeds. Providing a good maize hybrid for summer sowing has become a very urgent issue for my county’s seed work. In order to solve this problem, with the help of the Regional Agricultural Science Institute, we introduced several maize from Yellow Beijing 3-4 and Yellow 63 from Jilin and Jilin in 1972