Fertilization method: mainly soil fertilization combined with foliar fertilization. The methods of annular furrow application, strip furrow application, hole application and soil surface fertilization were adopted. Fertilization for young trees: apply fertilizer frequently and thinly, with nitrogen fertilizer as the main fertilizer and phosphorus and potassium fertilizer as the auxiliary fertilizer. Apply fertilizer 5-6 times in the bud germination period (March, May, June, July, September, 65438+February) in spring, summer and autumn, and apply 0.4 kg of ammonium carbonate or 0.2 kg of urea to each plant each time. 1-3 young trees should be applied with pure nitrogen 100-400g every year, and the ratio of nitrogen, phosphorus and potassium is1.0: (0.4-0.5):1.0. Fertilization for adult trees: Fertilization for adult trees is divided into four stages, namely germination fertilizer, fruit protection fertilizer, strong fruit fertilizer and fruit picking fertilizer. Generally, the amount of fertilizer applied is 2-3 kg of chemical fertilizer and one load of manure. Fruit-keeping fertilizer 1-2 kg phosphorus and potassium fertilizer+1 kg chemical fertilizer; Strong fruit fertilizer 1-2 kg chemical fertilizer+1-2 kg phosphorus and potassium fertilizer; The fruit picking fertilizer (base fertilizer) is mainly organic fertilizer, and each plant is applied with 50- 100 kg organic fertilizer+1-2 kg chemical fertilizer. Water demand: irrigate when the soil is dry, and drain when the water accumulates. Plastic trimming 1, principle. Adjust measures to local conditions, prune trees, properly raise and lower them, and ventilate and transmit light to achieve three-dimensional effect. Plastic surgery: (naturally happy shape). The trunk is 20-40cm high, and the trunk branches (3-4 branches) are scattered on the trunk. The branching angle of the main branch is 30-50 degrees, and 2-3 auxiliary main branches are left on each main branch. Generally, after the third main branch is formed, the central trunk of this kind is cut off and twisted to one side to form a fruiting branch group. Pruning (1) young trees: mainly light pruning. After selecting the extension branches of the class center and the main branches and the extension branches of the auxiliary main branches, moderate or even severe pruning is carried out, and the growth balance among the main branches is adjusted according to the pruning degree and the direction of cutting buds. In addition to properly thinning the over-dense branches, the inner branches and weaker branches in the middle and lower part of the crown should generally be retained. (2) Initial fruiting stage: continue to select short cutting to treat the trunk extension branches at all levels, erase the summer shoots, and promote the autumn shoots to be robust. In autumn, measures such as ring cutting, root cutting and water control are taken to promote the flowering of Wangshu. (3) Full-fruiting period: the fruiting branches, falling branches and declining branches are retracted in time, and the light-blocking branches, dead branches and insect branches are cut off.