AN INVESTIGATION ON SOIL MICROBIOFLORA IN TROPICAL FOREST AT JlANFENGLING I.FUNGI AND AZOBACTERIA

This papar reports the number and distribution of Fungi and Nitrogen-fixing bacteria in the tropical forest soils at Jianfengling, Hainan Island.The results show that there are differences in the number of fungi in both different season and different vegetation soils.The most is in the low-temperature season, followed successively by the dry season and the rainy season.The fungus number in tropical semideciduous monsoon forest soil is more than that in tropical evergreen monsoon forest soil and the lest number is in tropical mountain rain forest soil.A number of fungus strains were isolated from the above three types of the forest soils.They were identified to belong to 14 genera or groups.Five of the strains were not classified to genera.Nitrogen-fixing bacteria were not obtained from the soils.