马占相思优势外生菌根菌与根瘤菌双接种效应初报

马占相思（ＡｃａｃｉａｍａｎｇｉｕｍＷｉｌｄ）是速生优良多用途树种，其根部具有根瘤，具有共生固氮功能。为了使根瘤菌更好地促进马占相思的生长，国内外对其根瘤菌进行了大量的研究［１］。其中包括双接种根瘤菌与ＶＡ菌的研究［２］。虽然ＶＡ菌根菌能较好地促进马...

The Effects of Dual inoculation of Ectomycorrhiza and Rhizobia on the Growth of Acacia mangium

Acacia mangium seedlings were artificially inoculated with its superior ectomycorrhizal fungus Scleroderma polyrhizum and nitrogen fixing bacteria rhizobia LR001.After 3 months inoculation,the seedlings could form its typical ectomycorrhiza and nodulation. The result showed that the infection rate of mycorrhiza and nodulation are 100% with higher infection degree. The growth of the seedlings was promoted. The height,ground diameter,fresh weight and dry weight all increased in a certain degree. Dry weight of root biomass underground increased evidently by 430. 61% in comparison with the control. One way analysis of variance and multiple range analysis for seedling height indicated that there was an obviously significant difference between inoculation and control.