Effects of combined application of microorganisms and water-soluble fer-tilizer on the growth and quality of Chinese cabbage

LI Heng; SUN Yucui; LI Yingying; YANG Darun; FU Kejian; WANG Fang

doi:10.16861/j.cnki.zggc.2025.0231

Abstract：To investigate the effects of different Bacillus strains and their combined microbial agents with water-soluble fertilizer on the growth,yield,and quality of Chinese cabbage,this experiment used the variety Degao CR117 as the test material and adopted a pot experiment method.Eight treatments were established:No fertilizer(CK),water-soluble fertil-izer without bacteria(CF),water-soluble fertilizer with B.sub tilis(A),water-soluble fertilizer with B.licheniformis(B),water-soluble fertilizer with B.amyloliquefaciens(C),water-soluble fertilizer with B.megaterium(D),water-soluble fer-tilizer with B.mucilaginosus(E),and water-soluble fertilizer combined with a mixture of five Bacillus strains(F).The re-sults showed that compared with the water-soluble fertilizer without bacteria,the application of water-soluble fertilizer containing the five-strain compound(F)significantly improved plant growth and yield of Chinese cabbage,with plant height,canopy diameter,root mass,root length,and yield increasing by 9.33％,6.28％,17.54％,19.41％,and 8.57％,re-spectively.In terms of quality,the fertilizer containing the five-strain compound(F)increased the protein and vitamin con-tent by 5.19％and 29.44％,respectively.The water-soluble fertilizer containing B.amyloliquefaciens(C)mcreased the sol-uble sugar content by 185.96％,while the fertilizer with B.gelatini(E)reduced the organic acid content by 40％.Regard-ing soil indicators,the application of water-soluble fertilizer with the five-strain compound(F)increased the bacterial pop-ulation and organic matter content by 8.57％and 17.65％,respectively.The fertilizer containing B.amyloliquefaciens(C)improved soil total nitrogen utilization efficiency by 57.14％,and The ertilizer containing B.licheniformis(B)improved soil available phosphorus and available potassium content by 17.19％and 7.79％,respectively.In conclusion,the wa-ter-soluble fertilizer with the five-strain compound demonstrated significant advantages in promoting Chinese cabbage growth,improving quality,and enhancing soil properties,while different single Bacillus strains inoculants in water-solu-ble fertilizers also exhibited their respective strengths in specific indicators.