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通过改良试验研究,三种措施都改善了草地生态环境,增加土壤速效养分,增加牧草在草群中所占比重。施肥改良使豆科和菊科牧草在草群中比重分别比对照区增加19.8%～39.9%和27.5%～34.4%,使禾本科牧草比重降低15.3%～21.3%,可食牧草产量增加22.0%～57.8%。围栏封育使豆科和菊科牧草分别增加13.4%～26.7%和4.7%～9.0%,可食牧草产量增加13.1%～78.0%。浅耕翻使豆科和菊科牧草比重分别增加17.7%～27.3%、23.2%～36.3%,禾本科牧草比重降低10.1%～12.1%,可食牧草产量由第1年减少28.5%转为增加28.6%。由此得出,施肥和围栏封育是草地改良的有效途径。
Through the improved experimental study, all three measures improved the ecological environment of grassland, increased soil available nutrients and increased the proportion of pasture in the grass. Fertilization improved the proportion of legumes and Compositae forages in the grass groups increased by 19.8% -39.9% and 27.5% -34.4%, respectively, compared with that of the control plots, which reduced the proportion of gramineous forages by 15.3% -21.3% and the yield of edible forages by 22.0% ~ 57.8%. Fence fencing and asteraceae forage increased by 13.4% ~ 26.7% and 4.7% ~ 9.0%, edible forage yield increased 13.1% ~ 78.0%. The proportion of forage grasses and asteraceae forages increased by 17.7% -27.3%, 23.2% -36.3%, grazing forage grasses decreased by 10.1% -12.1% and edible forage grasses decreased by 28.5% from the first year 28.6%. It is concluded that fertilization and fencing is an effective way to improve grassland.