To investigate the effects of graphene addition on the growth of artificial grassland grass and soil nutrients in arid areas of Bromus inermis.Five levels of graphene supplementation(0 mg/L,25 mg/L,50 mg/L,100 mg/L,and 200 mg/L)were applied to potted Bromus inermis plants on June 1,2023.Growth parameters of the grass and soil physicochemical characteristics were evaluated on the 45th,75th,and 100th days post-planting.The findings indicated that:(1)Graphene had a positive impact on the growth of Bromus inermis,with the base diameter,leaf width,and leaf length of Bromus inermis reaching their peak under the C2 treatment,exhibiting increases of 12.32%,39.33%,and 13.10%compared to the C0 treatment(P＜0.05).Additionally,the total biomass fresh weight and dry weight of Bromus inermis was highest under the C2 treatment,showing respective increases of 44.28%and 47.91%compared to the C0 treatment(P＜0.05).(2)The levels of available nitrogen and available phosphorus in the soil reached their peak under the C2 treatment,showing a respective increase of 22.99%and 12.97%compared to the C0 treatment(P＜0.05).Additionally,the available potassium content reached its maximum under the C4 treatment,exhibiting a 24.26%increase compared to the C0 treatment(P＜0.05).(3)Following princi-pal component analysis,19 indicators were reduced to 5 relatively independent indicators,accounting for a cumulative contribution rate of 84.257%.Among these indicators,total biomass dry weight made the larg-est contribution.Subsequently,cluster analysis was used to categorize the concentration of graphene into three groups,with the 50 mg/L treatment yielding the most favorable results.The presence of graphene was found to enhance the growth of Bromus inermis by augmenting soil nutrient levels;however,excessive concentrations of graphene were observed to impede the growth of Bromus inermis.
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