我们从20多年的玉米育种实践中,提出三个方面的问题与同行研讨。 (一)玉米的育种目标作物育种目标正确与否,是育种成败的关键。在育种实践中同一生态类型地区,各个育种单位成效不一是常有的事。其主要原因是育种目标没有落实在选育材料上。1976年我们在总结和部署育种工作时,提出以抗病为中心,株形为基础,高产、稳产、优质的玉米育种目标。10年的实践证明是正确的。一个时期国内的矮化育种、理想株形育种和单纯的抗病育种等,都未取得令人满 From more than 20 years of corn breeding practice, we put forward three issues and peer research. (A) corn breeding objectives Crop breeding objectives correct or not, is the key to breeding success. It is not uncommon for different breeding units to work in the same ecological type in breeding practice. The main reason is that breeding objectives have not been implemented on breeding materials. In 1976, when we summed up and deployed the breeding work, we put forward the goal of maize breeding based on disease resistance as the center, plant shape as the basis, high yield, stable yield and high quality. 10 years of practice proved to be correct. During a period of domestic dwarf breeding, ideal plant-type breeding and pure disease-resistant breeding, have not achieved full