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(一)高粱杂交种,是现代农业科学利用杂种优势,大幅度增产粮食的经济有效措施。我省于1964年从北京中国农业科学院遗传所引进遗杂高粱进行区域试验,增产效果显著,一般增产20～30%,高的达60%以上。1965年在营口、阜新、海城、辽阳等10个县和11个国营农场进行多点试种和大面积生产示范373亩,还建立
(A) sorghum hybrids, is a modern agricultural science and utilization of heterosis, a substantial increase in grain production cost-effective measures. In 1964, the province conducted a regional experiment on the introduction of exotic sorghum from the Institute of Genetics, Chinese Academy of Agricultural Sciences, Beijing. The yield increase was remarkable, with a general increase of 20-30% and a high of 60%. In 1965, 373 mu of multi-point demonstration and large-scale production demonstration were conducted in 10 counties and 11 state-owned farms in Yingkou, Fuxin, Haicheng and Liaoyang, and also established