The pear tree is applied with biogas fertilizer, the flower buds are well differentiated, the shoots are neat, the leaves are thick green, the fruit is uniform, the gloss is good, the sweetness is high, the tree vigor is enhanced, and the ability of the pear tree to resist ring rot disease, black heart disease can be improved, and the yield per unit is increased to one percent Save 50% on fertilizer investment. Pear saplings are applied once a month to marsh fertilizer, and 10 kg of biogas slurry is applied to each plant. The spring shoot fertilizer is applied to 10 kg of biogas residue per plant. Adult fruit trees are planted to produce fertilizer, mainly based on basal fertilizer. Base fertilizer accounted for 80% of the total amount of fertilization in the whole year. Generally, it is carried out during the dormancy period of pear trees in early spring. The radial grooves are excavated around the trunk, and 50 to 100 kilograms of biogas residues are applied to each plant, supplemented with 250 grams of compound fertilizer and covered with soil after application. Before flowering, it was applied 10-15 days before flowering. Each plant had 50 kg of biogas slurry, 50 grams of urea added and roots applied. Strong fruit fertilizer, the first application in the first month after the flower Xie, 30 kg of biogas residues per plant or 50 kg of biogas slurry, plus 100 grams of compound fertilizer, deep ditch. The second time in the two months after the flower replenishment, the amount and method of fertilization were the same for the first time. Also, after the fruit was harvested, the Yang fertilizer was applied. Each plant had 30 kg of biogas slurry, 50 grams of urea and roots applied. Fertilizers and pears should be properly supplemented with chemical fertilizers and other organic fertilizers. Adult fruit-bearing trees need 300 kilograms of biogas fertilizer to meet the nutritional needs. The combination of root application and foliar fertilizer is better. Zhuhai Mingke Electronics Technology Co., Ltd , https://www.zhmkdz-electronics.com