Effects of different cultivation patterns on yield,quality and soil bacteri-al diversity of continuous cropping green pepper in greenhouse

XIE Yingtian; DIAO Weiping; ZHENG Jiaqiu; WU Wenli; SHU Xiuyu; LI Changgen; YOU Chun

doi:10.16861/j.cnki.zggc.2024.0552

Abstract：In order to optimize the cultivation model for continuous cropping of greenhouse green pepper,a green pepper greenhouse with 3 years of continuous planting(6 stubble)was selected as the research object.Through field experiments,the influence of 6 different planting modes on the yield,quality and soil bacterial diversity of green pepper was relatively analyzed,and the correlation between these three factors was preliminarily explored.The results showed that under the planting mode of applying base fertilizer+tillage+origin planting(T4),the total fresh mass,total dry mass,and yield of green pepper reached the highest,which were 337.53 g,78.77 g and 3 506.65 kg·667 m-2,respectively.Compared to the control group(base fertilizer+tillage+non-origin planting)(control T3),these increased by 22.71％,20.24％and 28.91％,respectively.Secondly by the no-base fertilizer+no-tillage+origin colonization mode(T6),the fresh mass,dry mass and yield of other treatment groups were 5.06％-27.26％,13.10％-21.45％and 7.55％-19.33％lower than those of the control group.In terms of OTUs,ACE and Shannon index of soil bacteria,the T6 and T4 treatment groups were gener-ally higher than those of other treatment groups,with an increase of 1.14％to 4.11％compared to the control group.In terms of quality,the quality of green pepper under no base fertilizer+no-tillage+non-origin planting mode(T5)is optimal.The dominant microbial communities were basically similar in different planting patterns,including Proteobacte-ria,Actinobacteria,Firmicutes,Firmicutes,Bacteroidetes,and Aciobacterium.Pearson correlation analysis showed that Alpha diversity index was positively correlated with pepper yield and negatively associated with quality index.Considering vari-ous factors comprehensively,the application of base fertilizer,tillage and origin the application of base fertilizer,tillage and origin planting with or without base fertilizer,no tillage and origin planting are the two recommended planting modes.