Abstract: A comparison test on different fertilization methods of nitramine chelating fertilizer to ladle in large greenhouse was carried out. The results showed that under the condition of equivalent nutrient, the best fertilization mode was used by the nitramine chelate fertilizer as base fertilizer and split topdressing, each hectare output of ladle reached 70500 kg, and the yield increased by 7.9%, the net income increase by 7.8% to compare with the farmers' traditional fertilization (CK) treatment.