By 15N-isotope dilution methods, the five compartments system was designed to study15N transfer via vesicular-arbuscular mycorrhizal hyphae between maize and peanut: the rootcompartment for the growth of donor and receiver plants, and two adjacent outer ones for water and hyphae growth, and the central compartment for hyphae links. Compartmentation wasaccomplished by a 30-μm nylon net mesh where hyphae could penetrate and grow while plantroots couldn't. The donor plants, which were labeled 15N by its roots absorbing directly fromsolution in the pot under the compartment at one month of plants growth, were grown in symbiosis with mycorrhizal fungus Glomus mosseae or as non-mycorrhizal controls. The plantswere harvested 40 days afterwards. The results showed that hyphae links were formed betweenroots of maize and peanut when the donor plants were inoculated, while couldn't in nonmycorrhizal controls. Mycorrhizal colonization slightly increased the N transfer from the donor to the receiver. Nitrogen uld translcated in both directions between peanut and maize. But the amount of N transferred from peanut to maize was higher than that of N transferred from maize to peanut.%应用五室分隔法研究了玉米和花生根间菌丝桥对氮的传递作用。研究表明:供体接种菌根,对花生、玉米的生长均有明显的促进作用，且对玉米的促进作用明显大于对花生的促进作用。此外，无论是以玉米为供体，还是以花生为供体，接种后，均能在玉米和花生根间形成菌丝桥，形成的菌丝桥能传递氮，且传递方向是双向的。但由花生传递给玉米的氮量明显高于由玉米传递给花的氮量。
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