First, the fertigation characteristics of pear tree pear sprout, flowering, fruit set, the formation of short shoots, all require a lot of nutrition, and pear root sparse, slow performance of fertilizer. Therefore, it is necessary to use autumn basal fertilizer to store a large amount of nutrients in the tree body, and add fertilizer in the early spring to meet the needs. Autumn basal fertilization is performed after the fruit is harvested, and an appropriate amount of nitrogenous fertilizer is added at the same time. Top dressing is early, chase quick-effect fertilizer, fertilize evenly, in order to absorb. The sand reserves fertilizer and water conservation are poor. The nutrient consumption of the old year tree is large. Therefore, applying topdressing in the bright leaf stage will help flower bud differentiation. Pear trees absorb the same amount of nitrogen and potassium. Phosphorus absorption only accounts for 1/4-1/3 of the total fertilizer. Increasing phosphorus and potassium fertilizers in high-yield pear orchards have obvious effects on increasing yield, quality, and enhancing tree resistance. The determination of the amount of fertilizer: every production of 50 kilograms of pears requires 0.15 kilograms of pure nitrogen, and the ratio of nitrogen, phosphorus, and potassium is 1:0.5:1. During the period of fertilizer demand, a large amount of nitrogen fertilizer was consumed in the early stage, which is the basis for determining the amount of fertilizer. Fertilization should be dominated by organic fertilizer, generally high-yield farm acres (1 mu = 1/15 hectare, the same below) 500 kg of composted soil, and evenly mixed with superphosphate 200 kg; a large number of results of pear orchards, 50 kg of urea per mu You can. Second, Shih Pear Blossom before the fertilizer in March pear has entered the bud, this fertilizer is mainly to promote budding, make it flowering and tidy, reduce the falling fruit drop in the later period, and promote the new shoots robust growth. Especially for trees with weak tree vigor and fruitful results last year, budding and flowering are more important. Therefore, we should seize this crucial period and apply the pear tree before flowering. This fertilizer is mainly based on available nitrogen fertilizer, and it is suitable for phosphate fertilizer, accounting for 20%-30% of the annual fertilization amount. According to strains producing 25-50 kilograms of fruit juice, 1.5 kilograms of calcium phosphate and 75-100 kilograms of human and animal manure should be applied. While fertilizing, water should be poured to promote the absorption of nutrients. In the early flowering to full flowering period of pear trees, it is also possible to use extra-root fertilizer, which has significant effects on the increase of leaf bales and leaves, the enhancement of photosynthetic efficiency of leaves and the improvement of fruit setting rate. Fertilization method: 91) Urea 0.1%-0.2%; potassium dihydrogen phosphate 0.1%-0.2%; superphosphate leaching solution 1%-2%. (2) Victoria b hydrogen acid rare earth 1000 times, that is, 50 grams of water 50 kg spray and canopy (can not be mixed with other pesticides, fertilizers). Third, the Shili pear fruit harvesting fertilizer 1, in the end of July before and after fruit harvesting, applying 1 quick-acting nitrogen fertilizer and phosphorus and potassium fertilizer, fertilizer accounted for 20% -30% of the year. According to strains producing 30-40 kg, the strain applies 0.3 kg of urea, 1.5 kg of superphosphate, 0.1-0.15 kg of potassium chloride or potassium sulfate, plus 50-70 kg of decomposed human-animal water and fertilizer, or 30-50 kg of green grass and green manure. . After fertilizing the nests, the water was irrigated in a timely manner and covered with straw, straw, and vines to protect the drought. 2, in September-October, early basal fertilizer, rejuvenation tree vigor. The method is: in the water crown of the pear tree crown, a circular fertilization nest with a length of 1 meter, a depth of 0.3 meters, and a width of 0.4 meters is relatively opened. The results of adult trees, the strain applied to mature human and animal husbandry, water and fertilizer 80-100 kg, 2 kg of cooked oil cake fertilizer, superphosphate 1-1.5 kg, and then irrigation 100-150 kg. The tree is cut in half. From July to September, spray the canopy with 0.1%-0.15% of green potassium, or 0.2% of potassium dihydrogen phosphate, and 0.3% of urea mixed fertilizer, once every 10-15 days, for 4-5 times, to prevent Early leaves and restoring tree vigor.