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Mycorrhizal (Mycorrhiza) fungi and plant roots are formed with a specific morphology and function of symbionts, is a ubiquitous nature symbiosis. In terms of the German plant physiologist with Mycorrhiza Frank for the first time to describe some of the roots and some fungi species formed a consortium as a starting point, mycorrhizal research has been 116 years of history. Our research on mycorrhizal started late 1950s, entering the country, after a half century of rapid development, China has a similar level with the international mycorrhizal research. Mycorrhizal generally divided into two main types: ectomycorrhizal (Ectomycor-rhiza) and endogenous mycorrhizal (Endomycorrhiza). Ectomycorrhizal now tend to be divided into, within and outside mycorrhizal mycorrhizal (Ectendomyc-orrhiza) as well as some minor types. This paper investigated a damaged in Tiantong evergreen broad-leaved forest pine, Schima, Castanopsis trees, stone oak, Castanopsis, Camellia mycorrhizal status of six dominant tree species, including various species of mycorrhizal morphology, ectomycorrhizal species infection, infection levels, infected bacteria identification; endogenous species of mycorrhizal infection, infection length, containing spore, etc., and had six plots analysis and comparison of different seasons. The results showed that: 1, Masson typical ectomycorrhizal species form mycorrhizae mainly single rod, two fork-shaped, coral-like and dendritic, main color is brown, tan, white and brown. From every land, the average infection rate in the lower bare land, and in Masson pine - Schima is higher. From the point of view of each season, the average infection rate is low in December 2003, in May 2004 is higher. The analysis identified finalized in the survey plots mycorrhizal symbiosis with bacteria Masson class of 4 families, 6 genera and 8 species, including hard Pimaboke (SclerodermataCeae) beans equine (Pisolithus) of Pisolithus tinctorius ( P.tinctorius (Pers.)) and hard Pima Bo genus (Scleroderma Pern) big bag hard Pima Bo (S.bovista Fr.) and red mushroom Branch (Russulacese) Lactarius genus (Lactarius Dcex Gray) of Lactarius mushroom (L.deliciosus (L.ex.Fr) Gery) distributed more widely. 2 superba as endogenous mycorrhizal species, mainly in the external hyphae thick-walled hyphae mainly rough, thick, dense cytoplasm, mycelium diameter of 30um or so, there bifurcating branch, hyphae without diaphragm , multicore, mycelium wall of triangular protrusions; roots outside the spore There are four main forms, namely: round, colorless, single wall; oval, colorless, membranous wall; long rod, colorless, invisible wall; conical, dark red, single wall; superba root mycelium mainly intercellular hyphae; arbuscular mainly dendritic, followed by a small amount of cauliflower-like; vesicles There are three main structures, namely spherical, cylindrical, oval, but also a small amount of irregular shape. View from every land, Schima mycorrhizal infection rate and spore-containing lower in Masson pine forest in Schima superba and Pinus - Schima is relatively high. From the point of view of each season, in December 2003 with an average infection rate and spore levels are low, in September 2004 is higher. 3, mangrove tree endogenous mycorrhizal species. External hyphae were thick and thin to thick-based. Roots outside the main oval spores, colorless, leathery wall; round, brown, single wall; long rod, purple, invisible wall;
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