施用生物炭是一种广泛应用的土壤改良措施,也是土壤“固碳减排”的重要途径,但单一施炭对碱性土壤肥力和作物产量的影响有限.本研究以生物炭和有机肥为试验材料,以广泛食用的白菜(Brassica rapa var.glabra)为供试作物,通过盆栽试验,探究了生物炭与有机肥单施或配施(施用量均为1％～3％)对碱性土壤理化特征和作物产量的影响.结果表明:施用生物炭和有机肥均显著增加了碱性土壤有机质和有效磷含量(P<0.05).施用有机肥显著降低了碱性土壤pH,增加了水解氮含量(P<0.05),而生物炭具有相反的效应.作物产量随有机肥施用量增加显著提高(P0.05).当1％的生物炭和3％的有机肥配施时,作物产量最高.这说明,生物炭对碱性土壤肥力和作物产量的影响有限,与有机肥配施更有利于碱性土壤改良.“,”Biochar (BC) is widely applied in agricultural production for its multiple uses such as carbon sequestration. However, application of BC alone has limited effect on soil fertility and crop yield, especially alkaline soil. Therefore, a pot experiment on Chinese cabbage (Brassica rapa var. glabra) was carried out in this study to investigate the effect of BC applied with organic fertilizer (OF) on alkaline soil properties and crop yield. To be specifc, BC and OF were respectively applied at 0, 1％, 2％, and 3％, and Chinese cabbage was transplanted and cultivated for 2.5 months. Results showed that BC and OF increased the content of both organic matter and available P in alkaline soil (P<0.05). Moreover, the application of OF alone decreased the pH value but raised available N content of alkaline soil, and the application of only BC demonstrated the contrary effect (P<0.05). OF signifcantly improved crop yield (P<0.05), but the effect of BC was insignifcant. Crop yield was the highest under the treatment of 1％ BC and 3％ OF. Thus, BC had limited effect on alkaline soil fertility and crop yield, but the application with OF was a good option for ameliorating alkaline soil and raising crop yield.