Experiments made through 1995 and 1996 indicated that the major pathogenic germ that caused black spot in Chinese cabbage was Alternaria brassicae (brek) Sacc. in Heilongjiang Provinec.

• 通过1995、1996两年的研究表明黑龙江省秋季大白菜引起黑斑病的主要致病菌是链格孢属的芸薹链格孢。