发展紧凑型、半紧凑型玉米，是调整种植业结构，开发粮食和饲料生产的一项重大措施。近年来，农田基本建设的不断加强，生产资料的发展，复种指数的提高，栽培技术的改进，为开发利用紧凑型、半紧凑型玉米新组合创造了有利的条件。紧凑型、半紧凑型五米也在各地得到广泛的推广? The development of compact and semi-compact corn is a major measure to adjust the structure of crop farming and develop food and feed production. In recent years, the continuous improvement of farmland construction, the development of means of production, the improvement of multiple cropping indices and the improvement of cultivation techniques have created favorable conditions for the development and utilization of new compact and semi-compact maize combinations. Compact, semi-compact five meters are also widely promoted around?