【摘要】 为评估不同生草措施对关中地区有机猕猴桃（Actinidia chinensis）园土壤理化性质和细菌群落结构的影响，本试验于2021年在陕西杨凌百恒有机猕猴桃园进行，设置3种人工生草模式：一年生黑麦草（Lolium multiflorum）+紫云英（Astragalus sinicus）、一年生黑麦草+秣食豆（Glycine max）、一年生黑麦草+毛苕子（Vicia villosa）,以自然生草（CK）为对照，测定耕层（0～20 cm）土壤的理化性质和细菌群落结构。结果表明，人工生草土壤有机质含量、脲酶、蔗糖酶、碱性磷酸酶和过氧化氢酶活性显著提升（P<0.05）,一年生黑麦草+紫云英模式有机质含量达到26.69 g·kg^-1,一年生黑麦草+毛苕子模式土壤酶活性提升效果最为显著（P<0.05）;人工生草处理的土壤细菌beta多样性、细菌群落之间的相互作用关系增加，有机系统代谢功能基因丰度显著降低（P<0.05）。综上，在关中地区有机猕猴桃园中种植一年生黑麦草+紫云英和一年生黑麦草+毛苕子有助于改善土壤微生态环境。更多还原

【Abstract】 This study was conducted to evaluate the effects of different cover cropping strategies on the soil’s physical and chemical properties, as well as the bacterial community structure in organic kiwifruit（Actinidia chinensis） orchards in the Guanzhong Area. This experiment was conducted in 2021 at the Yangling Baiheng Organic Kiwi Orchard in Shaanxi Province. Three artificial cover cropping measures were tested: Lolium multiflorum+Astragalus sinicus,Lolium multiflorum+Glycine max,Lolium multiflorum+Vicia villosa,with natural grass used as a control. The chemical properties and bacterial community structure of the soil in the topsoil（0～20 cm） were determined. The results showed that the organic matter of artificial grass increased by 8.8%～11.9% compared to the control, with the organic matter content of Lolium multiflorum+Vicia villosa reaching 26.69 g·kg^-1;The activities of soil urease, alkaline phosphatase, catalase were increased（P<0.05）,with Lolium multiflorum+Vicia villosa having the most significant effect（P<0.05）. The bacterial beta diversity and the interaction relationship between bacterial communities in artificial cover cropping measures increased, while the abundance of metabolic functional genes in organismal systems significantly decreased（P<0.05）. In summary, planting Lolium multiflorum+Vicia villosa. and Lolium multiflorum+Astragalus sinicus in organic kiwifruit orchards in the Guanzhong area can enhance the soil micro-ecological environment.更多还原