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玉米弯孢霉菌叶斑病是近年来在河北省发生的一种新病害。首先在自交系黄早四上发现，群众称之为黄斑病，随后在杂交种上也陆续发现此病。弯孢霉菌叶斑病发展流行迅速，先是在河北、京津地区，后漫延到东北、山东、河南，造成部分地区暴发。1996年在河北省中部、东部夏玉米产区?
Corn Curvalaria leaf spot is a new disease occurred in Hebei Province in recent years. First found in the inbred line Huangzao four, the masses called the maculopathy, then gradually found in the hybrids disease. Curvularia leaf spot epidemic rapid development, first in Hebei, Beijing and Tianjin area, after the spread to the northeast, Shandong, Henan, causing some areas of the outbreak. 1996 in central Hebei Province, the eastern part of summer maize?