The invention provides a calcareous soil application apricot tree BB fertilizer with major elements, medium elements and micro elements, the apricot tree BB fertilizer has the major elements of nitrogen, phosphorus and potassium, the medium elements of calcium, magnesium and sulfur and the micro elements of iron, zinc, manganese, boron, molybdenum, chloride and copper, the apricot tree BB fertilizer is prepared from five fertilizer sources of monoammonium phosphate, urea, potassium chloride, calcium magnesium phosphate powder and phosphogysum particles according to the characteristic that calcareous soil is alkali, by use of the interaction of the five fertilizer sources for improvement of fertilizer efficiency, the application amount of the fertilizer is reduced, the price is low, the price of the calcareous soil application apricot tree BB fertilizer is 20 yuans cheaper per 50kg than that of a same content compound fertilizer on the market, and 400 yuans cheaper per ton than that ofthe same content compound fertilizer on the market, and according to garden tests, under equivalent-nitrogen and phosphorus conditions, the yield of apricot fruits fertilized by the BB fertilizer prepared from the five fertilizer sources can be increased by 10-20% per mu compared with that of the apricot fruits fertilized by a BB fertilizer prepared from diammonium phosphate as a phosphorus source.