根据我国目前大田生产需要,就改进当前玉米育种方法问题进行了详细的阐述。建议在选育过程中除继续采用密度这一选择压力外,还应人为增加多重选择压力,诸如水分亏缺、超量施肥、病虫草害以及粗放式种植管理等,以期选育出丰产性与抗逆性协调统一的高产优质玉米新品种。此外,文中还对增加选择压力后应重点解决的几个问题进行了探讨。 According to the needs of current field production in China, the problems of improving the current maize breeding methods are described in detail. It is suggested that in addition to continuing the selection pressure of density in breeding process, artificial selection should be made to increase the pressure of multiple selection, such as water deficit, excessive fertilization, pests, diseases and weeds and extensive plantation management in order to breed high yield Resistant to the harmonization of high yield and quality of new varieties of corn. In addition, the article also discusses several issues that should be solved after increasing the pressure of selection.