The results is as follows: (1) The order of seasonal distribution in number of aerophile bacteria and actinomyces were autumn>spring>summer, the number in autumn was 2.8 times as much as that in spring and 3.2 times as much as that in summer;

• 结果表明 ；(1)好气性细菌和放线菌数量的季节动态分布是秋季 >春季 >夏季 ；秋季分别是春季和夏季的2 .；8倍和 3