玉米红叶病是我国近年来玉米生产中的一个重要问题。山东、河南、山西、陕西和甘肃等省每年都有不同程度的发生和危害、为了明确病源,为防治提供依据,我们对玉米红叶病的病源和传播途径进行了研究。 一、984年从玉米红叶病发生严重的河南省农科院小麦地采回小麦黄矮病病株标样、利用室内隔离饲养的麦二叉蚜(Shizaphis graminum),麦长管蚜(Macrosiphum avenae)、禾缢管蚜(Rhopa losiphum padi)和玉米蚜(Phopalosiphum maidis)等4种无毒蚜群体在15-18℃饲毒2天,饲毒后按每株接5—10头蚜虫,於21℃接种5天,喷药去虫后移放温室生长。结果发现用玉米蚜接种的植株发病,但其潜育期较 Corn leaf disease is an important issue in China’s corn production in recent years. Shandong, Henan, Shanxi, Shaanxi and Gansu provinces have different degrees of occurrence and harm each year. In order to clarify the source of disease and provide the basis for prevention and treatment, we studied the pathogen and transmission of maize leaf mosaic disease. First, in 984, from the wheat field of Henan Academy of Agricultural Sciences, which was seriously threatened by maize leaf disease, the standard samples of wheat yellow dwarf disease were collected. Shizaphis graminum, Macrosiphum avenae ), Four non-toxic aphid populations such as Rhopa losiphum padi and Phopalosiphum maidis were fed at 15-18 ℃ for two days. After feeding, the plants were fed with 5-10 aphids per plant at 21 ℃ inoculation for 5 days, after spraying the worms transferred greenhouse growth. The results showed that the plants inoculated with corn aphid disease, but its potential period