Nitrogen Reduction with Bio-Organic Fertilizer Altered Soil Microorganisms, Improved Yield and Quality of Non-Heading Chinese Cabbage (Brassica campestris ssp. chinensis Makino)

Excessively using fertilizers poses serious problems such as environmental pollution, soil degeneration, and quality yield reduction of vegetables. This study aimed to illustrate the effect different organic manure inorganic on characteristics soil, growth, yield, non-heading Chinese cabbage. There were 28 treatments in first experiment: no fertilization (CK), conventional (100% nitrogen T1), 20% total (T2), 30% (T3), or with four kinds three dosages (24 treatments). Six treatments, being selected from experiment based growth plants, further applied second experiment. The results showed that pH, nitrate nitrogen, matter content treated by N2 (20% 1500 kg·ha?1 No.1: Bacillus-enriched bio-organic fertilizer) significantly enhanced compared T1 nitrogen). N2-treated plants an 11.66% increase root activity, 9.24% enhancement 5.79% vitamin C (VC), 47.87% decrease T1. Nitrogen fertilizer increased dominant phyla Gemmatimonadetes Chytridiomycota decreased Ascomycota, genera Gemmatimonas Bacillus Fusarium, indicating this treatment altered microbial community composition soil. Redundancy analysis (RDA) AP (available phosphorus), OM (organic matter), UREA (urease activity) correlated structure. Yield was significantly, positively Rhodanobacter Olpidium. In conclusion, benefited cabbage improving quality.