老河口市农技推广中心1990年在湖北省农牧厅粮油处和襄樊市农牧局粮油科具体指导下,首次引进山东掖单系列紧凑型杂交玉米,在岗地试种4公顷获得成功,667平方米平均产量突破300公斤。1991年全市示范面积达747公顷,收到单产340公斤的好收成。1992年我市张集镇667公顷,667平方米产量达400公斤以上。为我市推广紧凑型杂交玉米生产迈 Laohekou Agricultural Technology Extension Center in 1990 in Hubei Province Department of Agriculture and Animal Husbandry Office of grain and oil and Xiangfan City Bureau of Agriculture and Animal Husbandry, grain and oil under the specific guidance of the first introduction of Shandong Yeda series of compact hybrid corn, on the job to test 4 hectare success, 667 The average square meter output exceeded 300 kg. In 1991, the city’s demonstration area reached 747 hectares and received a good harvest of 340 kg. In 1992, our city Zhangji Town 667 hectares, 667 square meters production of 400 kilograms or more. For the city to promote the production of compact hybrid corn step