【摘要】 分析定位试验23年后传统耕作(CT)和宽窄行交替种植条带深松(ST)两种耕作方式土壤剖面理化特性和玉米产量差异，探明保护性耕作对农田黑土结构特性、肥力和玉米产量的长期影响。结果表明，与CT处理相比，ST处理显著降低0～20 cm土层容重和垂直方向20～22.5 cm土层紧实度，增加0～20 cm土层非毛管孔隙度、田间持水量、饱和含水量和饱和导水率，显著提高30～90 cm土层有机质、全氮、碱解氮含量、C∶P、C∶K、N∶P和N∶K，增加0～10 cm土层全磷和速效磷含量，改善0～40 cm土层pH值，玉米产量提升5.75%～17.39%。更多还原

【Abstract】 This study investigates the long-term effects of conservation tillage on the structural properties, soil fertility, and maize yield in farmland black soil. It compares the physicochemical properties of soil profiles and maize yields between conventional tillage(CT) and wide-narrow row alternative planting with strip subsoiling tillage(ST) after 23 years of experimentation. The results indicate that, compared to CT, ST significantly reduced bulk density in the 0-20 cm soil layer and penetration resistance in the 20-22.5 cm soil layer. Additionally, ST improved the field capacity, saturation moisture content, and saturated hydraulic conductivity in the top 20 cm of soil. ST increased the content of organic matter, total nitrogen, alkali-hydrolyzable nitrogen, and the ratios of C∶P, C∶K, N∶P,and N∶K in the 30-90 cm soil layer. ST also elevated the levels of total and available phosphorus in the 0-10 cm soil layer and ameliorated soil pH in the 0-40 cm soil layer. Furthermore, ST increased maize yields by 5.75% to17.39% compared to CT.更多还原