1987年,我院在郾城县进行了夏玉米万亩500公斤高产开发研究,万亩试验基点设在郾域县三个乡的13个行政村,种植夏玉米面积11904亩,亩产520.3公斤,高产示范获得成功,带动的三个乡、一个镇的七万多亩夏玉米亩产337.4公斤,促进了全县45万亩玉米增产,亩产达到323.3公斤。1987年夏玉米高产示范开发研究是建立在科学研究的基础 In 1987, our hospital carried out a research on high-yield 500 kilos of summer corn per mu in Yuncheng County. The base of 10,000 mu was set in 13 administrative villages in Sanxiang, Langyu County. The area of ​​summer corn planted was 11,904 mu and the yield was 520.3 kilograms per mu High-yield demonstration was successful, led by three townships, a town of more than seventy acres of summer maize yield 337.4 kilograms, and promote the county 450,000 hectares of corn yield, yield 323.3 kilograms. The research on the 1987 summer maize high yield demonstration and development is based on the scientific research