1研究进展我国自20世纪60年代就已开始饲料玉米的育种研究,经过数十年的不断努力,在高蛋白、高油育种方面居世界领先地位。相比较而言,粮饲兼用玉米的研究开发利用在我国起步较晚,基础相对薄弱,育种方法、技术和手段落后。目前粮饲兼用玉米的育种还处于发展初期,育成品种较少,推广应用不规范。主要进行了秸秆青贮适宜收获期、青贮产量形成与生理特性、饲用营养价值、配套栽培技术、品比筛选等方 1 Research Progress Since the 1960s, China has started to study the breeding of feed maize. After decades of continuous efforts, it has become the world leader in high-protein and high-oil breeding. Comparatively speaking, the research and development of corn for food and grain use started relatively late in our country, the foundation was relatively weak, and the breeding methods, techniques and means were backward. At present, the breeding of both corn and grain is still in the early stages of development, bred varieties less popularization and application of non-standard. Mainly carried out the appropriate harvest of straw silage, silage yield formation and physiological characteristics, nutritional value of feed, supporting cultivation techniques, such as screening than the other side