[Objective]In order to study the effects of different fertilization treatments on the growth of meadow grassland plant communities and soil compactness.[Methods]In this study,three treatments,namely,no fertilization (CK),conventional fertilization (CG) and medium and micro-fertilization (ZW),were set up to carry out experiments on the effects of different fertilization treatments on plant height,biodiversity,biomass and soil compactness of meadow grassland.[Results]The results showed that:(1) both CG and ZW treatments were able to increase the average height of plant communities,among which CG treatment could significantly increase the average height by 61.77％ compared with CK treatment. (2) both CG and ZW treatments increased the Simpson dominance index,Shannon-Wiener index,Margalef richness index and Pielou evenness index of plant communities,indicating that fertilization could enhance the richness of grassland plant communities. (3) ZW treatment significantly reduced the fresh weight of meadow grass during the harvest season,and there was no significant difference in plant dry weight among three treatments,but ZW treatment was able to increase the dry-fresh ratio of plants. (4) different fertilization treatments all reduced the soil compactness in the 0 to 30 cm soil layer,but there were some differences among the soil layers.[Conclusion]Fertilization could improve the condition of meadow grasses and increase the height of grass communities,enhance the diversity index of plant species,increase the dry-to-fresh ratio of grasses,and improve soil compactness.
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