退化草地原位土壤接种丛枝菌根真菌对黄花苜蓿抗旱性的影响

打开文本图片集

中图分类号：S812.6 文献标识码：A 文章编号：1007-0435（2025）12-3885-13

引用格式：，等.退化草地原位土壤接种丛枝菌根真菌对黄花苜蓿抗旱性的影响[J].草地学报，2025， 33（12） ：3885-3897 MENG Chen-chen，ZHANG Ke-min，WAN Ji-xin，et al. Efects of Arbuscular Mycorhizal Fungal Inoculation on theDroughtResistance of Medicagofalcata in Situ Soil[J].Acta Agrestia Sinica，2O25，33（12）：3885-3897

Effects of Arbuscular Mycorrhizal Fungal Inoculation on the Drought Resistance of Medicago falcata in Situ Soil

MENG Chen-chen#， ZHANGKe-min#，WAN Ji-xin，BI Yi-xian，YANG Gao-wen（College ofGrassland Science and Technology，China Agricultural University，Beijing 1Ool93，China）

Abstract：The global grassland degradation situation is severe，and replanting legumes is an important means of restoration，but drought at seedling stage is the main constraint for replanting legumes.This study aimed to investigate the regulatory mechanism of arbuscular mycorhizal fungi （AMF） inoculation on the drought toler ance of Medicago falcata. In situ soil from degraded meadows was used for pot experiments of M falcata. The experiments were set up with inoculation with Claroideoglomus etunicatum，Fumneliformis moseae，a mixture ofthe two，and acontrol without inoculation.The experiments were conducted underdiferent drought conditions，and growth，root morphology，and nutrient absorption were measured. The results showed that both AMF species successfully colonized the roots of M ：falcata in degraded meadow soils with natural microbial communities.Under drought treatment，AMF inoculation increased root length and root surface area by （20 156.71%-423.92% ，and nitrogen and phosphorus contents of plants increased by 769.03% and 1120.50% ， respectively.In addition，C. etunicatum showed stronger drought adaptability，and mixed inoculation had no synergistic efect，indicating that a single strain with strong adaptabilitycould beselected for therestoration of degraded grassland.

Key words：Arbuscular mycorrhizal fungi;Medicago falcata;Drought stress; Nutrient uptake

草地是世界上最大的陆地生态系统类型，占地球表面的近 40% ，提供多种重要的生态系统服务，如粮食生产、固沙、水源保护和维护生物多样性[1-2]。（剩余17779字）