The result of study on occurrence regularity showed: Pathogen overwintered with my celium and conidia on marigold refuse, which were the primary infection resources, secordly was from infected seeds.

• 对仙客来叶斑病发生规律的研究表明：病原菌以菌丝或分生孢子的形式在病残体上越冬，从而成为该病的主要侵染源，此外，种子表面带菌是另一个传播途径。