Abstract:

A field-trail experiment was carried out to investigate the effects of single basal application of controlled-release bulk blending fertilizer (CRF) on rhizosphere soil microorganism. The main results are as follows: (1) Bacteria, Actinomyces and total microbial population in rhizosphere increased with the increasing of application of CRF, but Fungi population was opposite. Compared to CCF, 100% and 80% CRF treatment could increase Bacteria, Actinomyces and total microbial population in rhizosphere significantly, and decrease Fungi population significantly. (2) Nitrogen-fixing bacteria, ammonifers, nitrifying bacteria and cellulose decomposing bacteria population under CRF1 and CRF2 were significantly higher than CCF. CRF3 treatment was lower than CCF, but the difference was no significant. All these indicated that CRF application could increase soluble nutrients contents in soil by improvements of Bacteria and Actinomyces and microorganisms that have physiological functions reproduction, therefore, the garlic yield was increased.