近年来,全国各地随着玉米面积的不断扩大,杂交种的大量推广,玉米大斑病已成为我国北方和南方山区春玉米产区的重要病害。特别是当前生产上推广的多数杂交种表现对大斑病抗性不高,常导致大斑病的严重流行为害,是影响玉米稳产、高产的主要障碍。生产实践证明,采用以抗病品种为主的综合防治措施,是解决玉米大斑病的经济有效的技术措施。 为此,自1972—1977年进行了大量的玉米品种资源对大斑病抗病性鉴定和调查。在人工接种造成严重发病条件下,每一品种资源经过二年或二年以上的连续鉴定,在鉴定过程中每 In recent years, with the continuous expansion of corn area and the popularization of hybrid seeds across the country, the maize leaf spot disease has become an important disease in the spring maize producing areas in northern and southern mountainous areas of China. In particular, the majority of hybrids currently being promoted in production are not resistant to the large spot disease and often cause serious epidemics of the great spot disease. They are major obstacles that affect stable and high-yielding corn. Production practice has proved that the use of disease-resistant varieties based comprehensive prevention and control measures is to solve the maize leaf spot economic and effective technical measures. To this end, since 1972-1977 carried out a large number of maize variety resources on the identification and investigation of disease resistance. Under the conditions of artificial inoculation causing serious disease, each variety of resources after two years or more consecutive identification, in the identification process every