The main antibiotic ? producing bacteria are Gram negative whereas the antibiotic - producing actinomycetes belong to Streptomyces and Micromonospora and the antibiotic -roducing fungi belong to 6 different genera.

• 鉴定结果表明,拮抗细菌以革兰氏阴性菌为主,放线菌为链霉菌和小单孢菌,真菌分属于6个不同属。