[Objective]The screening of the combination between soil and water conversation herbs and arbuscu-lar mycorrhizal fungi(AMF)is the key to improving the control of soil erosion in red soil areas.[Method]A green-house experiment was conducted with three AMF treatments(inoculation with Funneliformis mosseae,Rhizophagus intraradices and non-inoculated control),and three plant species,Trifolium repens,Paspalum notatum and Pas-palum thunbergii.The AMF colonization rate,above-ground and belowground growth traits of the three herbs and soil aggregates were analyzed.[Result]The results showed that inoculation of AMF significantly improved the above-mentioned growth indices of T.repens,P.notatum and P.thunbergii,and exerting the most significant growth-promotion effect on P.notatum and T.repens.AMF inoculation significantly increased root length,root vol-ume,root forks and root-to-shoot ratio of T.repens,promoting the root growth and development of T.repens.The positive effect of T.repens on AMF root-cap ratio and mycorrhizal dependency was better than the other two plants.AMF inoculation significantly increased the content of water-stable aggregates in the soil of T.repens.[Conclusion]T.repens had higher rate of mycorrhizal infection,developed a more robust root system and good growth potential through symbiosis with AMF,improving soil aggregate stability.It effectively promoted vegetation and soil interac-tion,thus enhancing its ability to control slope erosion,improving red soil erosion area of slope soil,and reducing wa-ter loss from plant measures at the management level o.This could accelerates the region's ecological restoration and vegetation reconstruction.
关键词
AMF/植物根系/土壤团聚体/水土保持
Key words
arbuscular mycorrhizal fungi/plant roots/planting grass measures/soil aggregate/soil and water con-servation
维普
万方数据