烤烟低头黑病,是山东烟区一种新的病害,过去国内外均无报导。本病以往仅发生在局部地区,损失不重,惟近几年来病区范围逐渐扩大,目前已在潍县、安邱,益都、临朐、昌乐、寿光、临淄、潍坊等八个县、市占全省总种烟面积78%的地区都有发生。据昌潍专区1953年的统计,损失尚为383,037斤,而1955 Tobacco bow black disease, is a new disease in Shandong tobacco smoke, no reports at home and abroad in the past. The disease in the past only occurred in some areas, the loss is not heavy, but the ward in recent years the scope of the gradual expansion has been in Wei County, Anqiu, Yidu, Linli, Changle, Shouguang, Linzi, Weifang and other eight counties, The city accounts for 78% of the total area of ​​the province’s tobacco have occurred. According to statistics from Changwei Prefecture in 1953, the loss was still 383,037 pounds, while in 1955