This study screened a highly efficient potassium solubilizing bacterial strain LYBM04 from kitchen waste liquid,with a potassium solubilizing efficiency of 65.67％.After 16S rDNA analysis,it was identified as Bacillus mucilaginosus.The LYBM04 strain showed similar growth curves in the LB medium and potassium solubilizing bacteria re-screening medium,but the overall speed was slightly slower in potassium solubilizing bacteria re-screening medium.Through orthogonal experiments,it was determined that the LYBM04 strain can be inoculated into kitchen waste liquid with phosphate solubilizing bacteria and nitrogen fixing bacteria in the optimal ratio of 2:2:1 and an inoculation amount of 5％for aerobic fermentation at 30 ℃ for 40 hours to prepare liquid microbial fertilizer.After testing,the total phosphorus,ammonia nitrogen,total nitrogen,total potassium and other nutritional components were detected to be higher than those in kitchen waste liquid.It had a significant promoting effect on the plant height,root length,and root weight of potted corn,and had certain application prospects in the development and application of liquid microbial fertilizer.
维普
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