Ectomycorrhizal Investigation Of Pinus Tabulaeformis Carr. In Nurseries Of Huhhot And Cercumjacent Regions

This study investigated the ectomycorrhizal situation of 1-4-year Pinus Tabulaeformis Carr. seedlings of 11 nurseris of Huhhot and cercumjacent regions in Inner Mongolia,described morphological and antomycal characteristics of ectomycorrhizae, computed infected rate of 810 Pinus Tabulaeformis Carr. seedlings, calculated quality exponent based on datas of seedling height, diameter at ground level, dry weight of overground and underground parts, mensurated soil pH value of 11 nuseris, compared the composing of mycorrhizal fungi between mature Pinus Tabulaeformis Carr. in DaQing Mountain and young Pinus Tabulaeformis Carr. seedlings in these 11 nurseries. This study primaryly confirmed symbiotic fungi with Pinus Tabulaeformis Carr. belonging to 3 genus of basidiomycete based on the morphological and anotamical characteristics, they were Suillus Mich.ex Gray, Russula Gray and Tomentella Pat.; Suillus Mich.ex Gray was the predominated fugus of Pinus Tabulaeformis Carr. in Hohhot and cercumjacent regions; total infected rate of Pinus Tabulaeformis Carr. in these 11 nurseries was low, there was little correlation between mycorrhizal infected rate and quality exponent according to the correlated analysis of these two factors; soils in all these 11 nurseries were alkalescent , pH values were around 7.5; there were also some differences on fungal composing between mature Pinus Tabulaeformis Carr. in DaQing Mountain and young seedlings in nurseries. Results of this research provided theoretic basis to select mycorrhizal fungi and mobilize mycorrhizal biological technologies for Pinus Tabulaeformis Carr.'s cultivation in nurseries and afforestation in DaQing Mountain.