向日葵烂盘又称白腐病、烂头病。近几年,随着种植向日葵面积的扩大,种植年限的增加,越冬菌源清除不彻底,以及重茬、迎茬面积的增多,其危害程度越来越重,个别地方发病率已达40%以上,有的甚至绝收。 Sunflower rotten dish, also known as white rot, rotten head. In recent years, with the expansion of planting sunflower area, increasing planting years, overwintering fungus source removal is not complete, as well as stubble, stubble area increases, the degree of harm is more and more serious, the individual local incidence has reached 40% Some even do not accept.