No-till reseeding is one of the important measures for restoring degraded grassland， and whether the replanted grass species can grow and settle in the native vegetation community is the key to the success of no-till reseeding in degraded grassland. In order to clarify the effects of fertilization and compaction measures on the growth of no-tillage reseeding grasses， grass community characteristics and biodiversity， three no-tillage reseeding modes， five fertilizer combinations and two compaction treatments were set up in this study. The results showed that， compared with the control treatment， the nitrogen and phosphorus treatments had a significant effect on the characteristics of grass communities in the three replanting modes， in which the height of grass communities increased by 23.91%-43.43%， the cover increased by 7.07%-15.21%， and the density and biomass increased by 15.74%-51.94% and 17.57%-36.78%， respectively， but there was no significant effect on the diversity of grass communitie.Compared to the single-species supplemented grassland of alfalfa and awnless sparrow. The vegetation cover and density of the simultaneously supplemented grassland of alfalfa and awnless sparrow significantly increased by 3.01%-3.89%， 6.45%-15.90%， and the diversity indices of grassland， such as Simpson’s index of dominance， Shannon-Wiener’s index， and Pielou’s index of evenness， increased by 3.65%-9.70%， 5.02%-9.38% and 2.89%-8.97%. The average plant height， cover， density and biomass of the grass community compaction after no-till reseeding increased by 6.44%， 0.76%， 3.07% and 11.37%， respectively， compared with that of the no-suppression treatment. Considering all the factors， the measures of replanting alfalfa and awnless triticale in degraded grassland， adding nitrogen and phosphorus nutrients， and suppressing treatment can improve the productivity and restore the ecological function of the grassland.

No-till replant  /  Fertiliser  /  Suppression  /  Community characteristics  /  Biodiversity