Abstract: Seedlings of Acacia confusa and Pinus massoniana inoculated with ectomycorrhizal fungusXerocomus chrysenteron under non-sterilized condition have a better growth than control.When Acacia confusa seedlings are inoculated with ectomycorrhizal fungus Calvatialilacina and VA mycorrhizal fungus Glomus epigamus under sterilized condition, their nitrogen and proline contents are higher than those treated with G.epigamus alone.Observations on young infected root sections show that ectomycorrhizal fungus hyphae can penetrate into intercellular space, and the development and structure of mycorrhizae are improved.

Key words: Ectomycorrhizal fungus, VA mycorrhizal fungus, Inoculation, Acacia confusa, Pinus massoniana