In this experiment,switchgrass was used as the indicator crop and planted in the field plot.The treatments included CK(blank control),biological fertilizer(ET1),Saizhong soil conditioner(ET2),and self-developed soil conditioner(ET3).This study explored the effects of these soil conditioners on the growth charac-teristics of switchgrass and the physicochemical properties of aeolian sandy soil.The aim is to provide a theoreti-cal basis for the scientific cultivation of switchgrass and the improvement of aeolian sandy soils in this region.The results showed that:(1)Different soil conditioners improved the physical properties of aeolian sandy soil.ET1,ET2,and ET3 increased moisture content and decreased the bulk density by 10.12％,4.38％,and 6.49％in July,August,and September,respectively.(2)Organic matter and alkalihydrolyzable nitrogen content in-creased across treatments;available phosphorus in ET3 increased by 7.37％and 37.8％compared with ET1 and ET2.(3)Soil conditioners significantly increased the plant height,biomass,and leaf area of switchgrass.
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