【摘要】 依托连续6年田间耕作定位试验，探究传统耕作(CT)和秸秆耙混还田(HTS)对黑钙土有机碳库和胞外酶化学计量特征的影响。结果表明，与CT处理相比，HTS处理显著增加0～40 cm土层易氧化有机碳、微生物量碳、有机碳含量、碳库活度、碳库指数、碳库活度指数、碳库管理指数、β-1,4-葡萄糖苷酶和亮氨酸氨肽酶活性。HTS较CT处理显著提高0～10 cm土层矢量长度(VL)和矢量角度(VA)，降低20～40 cm土层VL和VA。冗余分析表明，土壤容重、活性有机碳组分和氮磷含量是影响酶化学计量特征的主要因子。更多还原

【Abstract】 Based on six consecutive years of field cultivation positioning experiments, this study explores the effects of conventional tillage(CT) and harrowed tillage with straw incorporation(HTS) on the organic carbon pool and extracellular enzyme stoichiometric characteristics of chernozem soil. The results indicate that compared to CT treatment, HTS treatment significantly increases the easily oxidizable organic carbon, microbial biomass carbon, organic carbon content, carbon pool activity, carbon pool index, carbon pool activity index, carbon pool management index,β-1,4-glucosidase, and leucine aminopeptidase activity in the 0-40 cm soil layer. HTS significantly enhances the vector length(VL) and vector angle(VA) in the 0-10 cm soil layer compared to CT treatment, while reducing VL and VA in the 20-40 cm soil layer. Redundancy analysis shows that soil bulk density, active organic carbon components,and nitrogen and phosphorus content are the main factors influencing the enzymatic stoichiometric characteristics.更多还原