Abstract:

To investigate the effect of feces fermentation products (organic fertilizer) made by ultra-high temperature aerobic fermentation process, magnesium ammonium phosphate (MAP for short) and coated slow-release magnesium ammonium phosphate (CSMAP for short) made from urine on Chrysanthemum coronarium, a pot experiment was conducted with 8 treatments, including application of compound fertilizer (T1), compound fertilizer+organic fertilizer (T2), CSMAP (T3), CSMAP+organic fertilizer (T4), MAP (T5), MAP+organic fertilizer (T6), organic fertilizer (T7), and no fertilizer (CK). It was shown that the plant heigh, stem length, biomass (fresh weight and dry weight), yield, nitrogen accumulation, vitamin C content of C. coronarium were significantly (P<0.05) lower under T3, T5 treatments than those under T1 treatment. On the basis of T1, T3, T5 treatments, co-application of organic fertilizer (T2, T4, T6 treatments) significantly increased the fresh weight, root length, yield, nitrogen accumualtion, phosphorus accumulation, soluble sugar content and vitamin C content of C. coronarium accordingly, and the increasement was the highest under T4 treatment. By comparison, the plant height, root length, yield, phosphorus accumulation, soluble sugar content, vitamin C content of C. coronarium were not significanlt lower under T4 treatment than those under T2 treatments. Therefore, the CSMAP made from urine could replace compound fertilizer in the cultivation of C. coronarium. When CSMAP was applied with the organic fertilizer made from feces, the problem of slow nutrient release in the early stage of CSMAP could be solved, and it could realize the resource utilization of feces and urine.

Key words: feces, urine, magnesium ammonium phosphate, slow-release fertilizer, Chrysanthemum coronarium