Maize growth and phosphorous-and zinc uptake under different phosphorous supply levels The influences of arbuscular mycorrhizal fungus, Glomus mosseae, on C∶N∶P ratios and RNA contents of white clover at different nitrogen and phosphorus addition levels Effects of arbuscular mycorrhizal fungi (AMF) on growth and regrowth of bermudagrass under different P supply levels Effects of AM Fungi on the Growth Relationship between Adult Plant and Seedlings under Different Phosphorus Supply Levels