Efficiency Of Symbiosis Between Lanzhou Lily(Lilium Davidii Var. Willmottiae) And Arbuscular Mycorrhizal Fungi And Its Spores Distribution Patten

Lanzhou lily (Lilium davidii var. willmottiae) is a perennial herb which is famous for its nutrition and high quality. Mycorrhizal fungi produced the largest biomass in soil ecosystem which is one of the most important microbial floras. Arbuscular mycorrhizal(AM) fungus is an important ecological significance microbial population which is widely spread in grassland, agriculture, forestry, and so on. AM fungus has significant functions for the agricultural and forestry production.It is well known that the modern agricultural developments are based on the ecological destruction. The natural environmental was heavily damage which was caused by the aim of economic development. By using the mycorrhizal fungi in symbiosis, it not only could decreased the quantity of fertilizer application, but also could reduce the environmental pollution on soil and water. In natural habitats, AM fungus reproduce by spores, mycelium, etc. in which chlamydospores are the main propagules. AM fungi spores are the main forms survived in the stressed habitats. The spores in soil ecosystem play a key role to AM fungal community structure and ecological distribution. Thereby, field experiments were carried out to study the symbiotic relationship and spatial pattern of spores with Lanzhou lily.1) Results showed that the different contents of phosphorus caused not significant influence on the growth and development of AM fungi (p>0.05). The AM colonization rate of Lanzhou Lily has the lowest in the period of seedling establishment, and in bulb growing stage has the highest. The results show that as the phosphorus concentration increased, AM colonization rates showed the trendy of increased first and then decreased. The different growth periods in P3:(19.54+60) mg/kg treatment has the highest colonization rates. Different growth stages, benonyl treatments caused significant influence on the mycorrhizal colonization rate of Lanzhou lily (P<0.001)2) Depth of the rhizosphere soil caused a significant influence on the spore density in different periods (P<0.001). Seasonal changes had a significant effect on the spore density (P<0.001). Spore density of Lanzhou lily in different growth stages was significantly different. Spores density has the highest in the seedling stage and has the lowest in the flowering phase.3)Benonyl treatments on Lanzhou lily's biomass was not significantly (P>0.05) The different contents of phosphorus significantly influenced the biomass (P<0.001). The different contents of phosphorus significantly influenced the fresh weight (P<0.05).The biomass has the lowest on PO:19.54mg/kg treatment and has the highest on P4:(19.54+80) mg/kg treatment.. Moreover, with the phosphorus concentration increased fresh weight showed an increasing trendency. P4:(19.54+80) mg/kg treatment was significant higher than the P1:(19.54+20) mg/kg treatment.