Abstract:

Abstract:To investigate the Nitrogen Utilization in the neutral purple soil by the external hyphae of Arbuscular Mycorrhiza(AM), the modified Hawkins and George (1999) devices was used to simulate a natural growing environment, made the soil as the substance, and as far as possible to eliminate the interference of phosphorus. The results showed that inoculation with Glomus intraradices increased both of the nitrogen and phosphorus status in the maize shoot and root, and played a good role. The external hyphae of Arbuscular Mycorrhiza can expand the scope of ,and the distance should not be less than 5cm. Besides, the main form of nitrogen used by the external hyphae is inorganic nitrogen.