向日葵褐斑病(Septoria helianthi Ell.etKell.)是C·φ·莫洛契柯夫在苏联的外喀尔巴阡州首次发现和报道的。该病分布很广,是一种世界性病害,在加拿大和西欧均广泛流行,在我国东北三省的向日葵上也是一种常发性病害。遇上在7月上旬至8月下旬的多雨的年份发病尤为严重,可导致植株早期枯死,对向日葵的产量及品质影响很大。为了防治这 Septoria helianthi Ell. Et Kell. Was first discovered and reported by C. Morozikov in the Soviet Union in the Carpathians. The disease is widespread and is a worldwide disease that is prevalent in Canada and Western Europe and is a persistent disease on sunflowers in the three northeastern provinces of the country. In particular, the rainy years encountered during the first ten days of July to the end of August are particularly serious and can lead to early withered plants and greatly affect the yield and quality of sunflower. In order to prevent this