A: The spring pear tree sprouts, blossoms and new shoots need to consume large amounts of nutrients. Therefore, it is necessary to top-dress the pre-flowering fertilizer before the pears sprout to make up for the lack of nutrients stored in the tree and meet the spring pear tree's demand for nutrients. Fertilizer before the application of fertilizer is mainly fast-acting nitrogen fertilizer, generally applying 20 kg of urea per mu, 15 kg of potassium sulfate, 40 kg of superphosphate, 2000 kg of livestock manure. The topdressing time is applied at the latest in early March in front of flowering leaves. Organic fertilizers should be applied 10-15 days before germination, and deep trenches of 40-60 cm deep at the periphery of the canopy should be the most suitable. Good, topdressing should be combined with irrigating water, at the same time. Finally, the foliar fertilizer is sprayed to accelerate the growth of the new shoot after flowering. After the leaf color turns green, 0.2% to 0.3% of potassium dihydrogen phosphate or 0.3% to 0.5% of urea can be used for foliar spray fertilizer. Spray should be uniform, it is best to spray on the back of the leaf, this is conducive to absorption, can be combined with spraying.