为了探索免耕/深松隔年轮耕对土壤理化性状及冬小麦产量的影响,2007年至2010年在宁南旱区采用免耕/深松/免耕、深松/免耕/深松与连年翻耕3种耕作模式,对土壤容重、团聚体、养分及小麦产量等进行了研究。结果表明:与传统耕作相比,免耕/深松/免耕和深松/免耕/深松模式显著(p<0.05)降低土壤容重,改善了土壤的孔隙状况;两种轮耕模式可显著(p<0.05)增加0～40 cm各土层2～0.25 mm水稳性团聚体的含量。3种耕作方式比较,深松/免耕/深松模式最能有效增加0～40 cm土壤有机质和0～20 cm土层全氮含量;免耕/深松/免耕和深松/免耕/深松处理较传统耕作显著增加0～40 cm土层碱解氮和有效磷含量、20～40 cm土壤速效钾含量,改善了土壤的养分状况。试验期间,免耕/深松/免耕、深松/免耕/深松模式3年平均小麦籽粒产量较传统耕作显著增加,分别增产9.59%和10.69%(p<0.05),以深松/免耕/深松处理增产效果最佳。 In order to explore the effect of no-tillage / deep-tillage rotation on physico-chemical properties of soil and winter wheat production in the next year, no-tillage / subsoiling / no tillage, deep / no tillage / Three kinds of tillage tillage mode, soil bulk density, aggregates, nutrients and wheat yield were studied. The results showed that compared with the traditional tillage, the tillage / subsoiling / no-tillage and subsoiling / no-tillage / subsoiling significantly (p <0.05) decreased the bulk density of soil and improved the soil porosity. Significantly (p <0.05) increased the content of water-stable aggregates from 2 to 0.25 mm in 0-40 cm soil layers. Compared with the three tillage modes, the subsoiling / no-tillage / subsoiling mode can effectively increase the total N content in 0-40 cm soil organic matter and 0-20 cm soil layer. No-tillage / subsoiling / no-tillage and subsoiling / no tillage / Subsoiling treatment significantly increased soil available nitrogen and available phosphorous content, available potassium content in 20 ~ 40 cm soil layer, and improved soil nutrient status than traditional tillage. During the experiment period, the three-year average wheat grain yield increased significantly by 9.59% and 10.69% respectively compared with the conventional tillage with no-tillage / subsoiling / no-tillage and deep / no tillage / Tillage / subsoiling processing yield the best.