| In order to investigate the effects of corn stumping and straw mulching on long-term continuous potato soils, the experiment was conducted on a piece of land that had been continuously planted with potatoes for eight years with four different treatments: control, without any treatment (CK). A corn stover mulch was applied (T1). Corn stubble followed by corn stover mulching (T2). Corn stubble fall treatment only (T3). The effects of corn stubble and straw mulching on the structure and diversity of inter-root soil bacterial communities at the bud stage of potato were investigated by high-throughput sequencing. The results showed that the abundance of potato inter-root soil bacteria increased by 3.72% and 5.18% in T1 and T2, respectively, but decreased by 4.91% with corn stubble alone, and the diversity of potato inter-root soil bacteria was significantly increased by corn stubble and straw mulching, with an increase of 7.03%, 8.03%, and 3.43% in T1, T2, and T3, respectively, compared with CK, but not significantly. but not significantly. The similarity of the bacterial community structure of potato soil samples from different treatments was analyzed by clustering, and the treatments could be divided into two groups according to the similarity of bacteria, the first group contained CK and T1, and the second group contained T2 and T3. the dominant populations of potato inter-root soil bacteria under maize stubble and straw mulching were Actinobacteriota, Proteobacteria, Firmicutes, Chloroflexi, Acidobacteriota, Bacteroidota, Gemmatimonadota, and Myxococcota. were dominant. Among them, Actinobacteriota increased by 10.89% in T1 compared to CK, and decreased by 4.83% and 8.78% in T2 and T3 compared to CK, respectively. Compared with CK, all three treatments of Proteobacteria increased, and T2 had the highest increase of 33.44%. Firmicutes decreased in all treatments compared to CK, with the highest decrease of 77.41% in T2 compared to CK.Chloroflexi increased by 29.09% in T1 compared to CK, and significantly increased by 41.03% in T2 and 34.45% in T3 compared to CK (P<0.05). Acidobacteriota increased in all treatments compared to CK, with 58.86%, 27.69%, and 35.27% increases in T1, T2, and T3, respectively. The results of environmental factor correlation analysis showed that soil total phosphorus and soil dehydrogenase were the main environmental factors affecting the inter-root soil bacterial community. Corn stubble and straw mulching improved the soil microenvironment and significantly reduced the number of harmful bacterial genera such as Bacillus, with a significant reduction of 70.28% in T2. The spread and occurrence of potato diseases were effectively mitigated. |