Abstract:In this study, pig manure+straw, chicken manure+straw, sheep manure+straw and three above manures+straw were fermented under aerobic and anaerobic conditions, respectively. The end product of fermentation was applied to containers filled with continuous cropping soil of apple field. The effects of fermented product on apple seedling growth in containers, microbiology, activity of urease, invertase and phosphatases as well as phenolic acid in continuous cropping soil contents was investigated. The results showed that the anaerobic fermented product (fermented fluid) was applied into replant soil significantly enhanced the dry and fresh biomass production of the seedlings compared to the aerobic fermented product (solid compost). Pig manure's fermented fluid increased plant fresh and dry weight by 1.57 and 1.26 times as compared to the control plant in July respectively, and 1.55 and 1.86 times in September, respectively. Soil microorganism population quantities was increased by both forms of organic matter, the fermented liquid has a stronger effect than the solid compost in bacterial and actinomycetal density, sheep manure's fermented fluid was the best, and it increased about 2.95 and 2.37 times in above two kinds of microbiology, respectively. Moreover, both fermented products significantly influenced contents of phenolic acids, and the pig's fermented fluid, chicken's fermented fluid and pig's solid compost decreased the total contents of phenolic acids by 0.45, 0.39 and 0.36 times compared to the control in September.