Effects of Preparing Magnesium Ammonium Phosphate From Urine on the Growth and Quality of Chrysanthemum annuum

Taking Chrysanthemum annuum as the experimental material, the method of potted plants was carried out.Four parallel experiments were conducted by setting up ordinary compound fertilizer（T1）,urine prepared ammonium magnesium phosphate coated slow-release fertilizer（T2）,urine prepared ammonium magnesium phosphate fertilizer（T3）,and blank control（T4）.The effects of different experimental conditions on the growth and quality of Chrysanthemum annuum were studied, in order to provide reference for crop cultivation while utilizing urine as a resource and potentially replacing commercial fertilizers in the future.The results showed that the fertilizer efficiency of the three fertilizers was significantly higher than that of the control.Among them, ammonium magnesium phosphate fertilizer had a higher survival rate for the treatment of Chrysanthemum annuum.During the harvesting period, the plant height and stem diameter of Chrysanthemum annuum treated with ammonium magnesium phosphate were 1.43 and 1.54 times higher than those of the control.The total biomass of fresh weight and total biomass of dry weight were 5.80 times and 4.40 times higher than those of the control, respectively.The yield increased by 4.63 times compared to those of the control.The root length was 1.44 times that of the control group.The accumulation of N and P was 2.00 times higher than that of the control group.The soluble sugar content and vitamin C were 1.46 times and 3.00 times higher than those of the control, respectively.The nitrate content in the coated slow-release fertilizer and magnesium ammonium phosphate plants met the standard and was lower than that in the compound fertilizer.The nitrate content in the magnesium ammonium phosphate fertilizer prepared from urine was 1.17 times higher than that in the control.In summary, the ammonium magnesium phosphate fertilizer prepared from urine not only solved the problem of difficult urine treatment, but also had good development prospects for agricultural cultivation.