Effects Of Indigenous And Exogenous Arbuscular Mycorrhizal Fungi On Growth Of Syzygiμm Grijsii

Two types of experiments were conducted to investigate the effects of indigenous and exogenous arbuscular mycorrhizal fungi on growth of Syzygium grijsii. One is rotating PVC tubes to inhibit the infection of indigenous mycorrhizal fungi, the other one is investigating the effects of inoculating Gi, Gm and Gi+Gm on growth of Syzygium grijsii.In the experiment of field cultivation, root mycorrhizal colonisation rates were significantly lower in the rotating treatment and the treatment with two layer of membrane than no-rotating treatment. root mycorrhizal colonisation rates of T2 and T3 were lower by 77.2% and 68.3% compared with that of T1. Syzygium grijsii is an mycorrhizal plant, indigenous arbuscular mycorrhizal fungi can bring excellent mycorrhizal effect which improve the absorption efficiency and content of N,P and K.The total biomass of T1 was 2.2 and 2.3 times than that of T2 and T3 respectively.Fungal hyphae can be interrupted by rotating PVC tubes indicate that fungal hyphae can be used to transfer nutrients.In the experiment of pot cultivation, inoculating Gi, Gm under unsterilized soil condition can promote the shoot growth and primary branch thick growth, the total new shoots growth of inoculating Gi, Gm and Gi+Gm was 2.2%, 11.5% and 18.3%higher than that of the control group.Inoculating microbial inoculum has played a significant role in growth and can increase nutrient accumulation of leaves, enhance the capacity of anti-aging of plant.