向日葵菌核病又叫白腐病,俗称烂盘病。近几年来,这种病害在向日葵主产区都有不同程度的发生,病株率大多在50%左右,严重地块高达80%左右,严重影响向日葵的质量产量。1.发病症状向日葵菌核病,在向日葵整个生育期间都能发生,病害有两种类型。1.1立枯型自幼苗开始到花盘形成都能发? Sunflower scab is also called white rot disease, commonly known as rotten disease. In recent years, the disease occurs in different degrees in the main sunflower producing areas. The rate of diseased plants is mostly about 50% and the serious mass is about 80%, which seriously affects the quality and yield of sunflower. 1. Symptoms Sunflower sclerotinia can occur throughout the growing sunflower, there are two types of diseases. 1.1 Withered seedlings since the beginning of seedlings can be formed to the disk?