Spring is an important period for the management of fruit trees. As long as they are properly managed and promote flowering, they can form flower buds in the fall of that year. The main technical measures are as follows: 1. Weak trees The weak trees are mainly caused by poor conditions such as soil, fertilizer and management, and malnutrition, resulting in small and small leaves, thin and short branches, and weak root systems. To promote the growth of weak trees, we must grasp the key to raising the roots, because only the roots are deep enough to leaf. 1.1 Deep application of organic fertilizer According to the size of the tree, each plant in the early spring to make up 1-3 kg of cake fertilizer, brewed 30-50 kg of water and fertilizer. Fertilizing pits are dug deep into the outer edge of the crown to extend the root system to depth and breadth. 1.2 topdressing mineral fertilizers in April (before and after flowering) each plant urea 0.25-0.5 kg, plus superphosphate 0.5-1 kg. Each condition can also be applied to 1.5-2.5 kg of plant ash, but not with nitrogen and phosphate fertilizer. 1.3 Prevention and control of pests and buds Before spraying buds, 5 degrees lime sulfur is used to control various spider mites, shell insects and overwintering eggs. In early April, 1,000 times of dimethoate or methamidophos emulsions were sprayed to control aphids and tip leaflets to ensure healthy growth of trees. 1.4 Foliar spray fertilizer in early April (after germination), using 0.3% urea solution and potassium dihydrogen phosphate solution, spray alternately for 1-2 times between 7-10 days, in order to facilitate the strong shoots and promote new roots. Gradually restore the tree. 2. Wang tree promotes flower saplings because of excessive growth, developmental disorders are not easy to result. The leaves of the general Wang tree are thin, the trees are slender, the internodes are also long, and the buds are of poor quality and are stunted. Therefore, it is imperative to grasp the crown control measures in the spring so that vegetative growth is hindered and reproductive growth is promoted. 2.1 Ring peeling The main ring lining in April has an inhibitory effect on the growth of the tree. The width of girdling is preferably one-tenth of the diameter of the peeled twigs. The girdling can increase nutrient accumulation above the circumcision, promote reproductive growth, favor the formation of flower buds, and increase the fruit setting rate for trees that begin to produce results. 2.2 Application of Growth Regulator Before and after the budding of apple, paclobutrazol is diluted with proper amount of water, and an annular groove with a depth of 15 cm is drawn on the edge of the canopy projection. The liquid medicine is uniformly poured into the ditch, covered with a cover soil. 2.3 Late Spring Trimming During the winter season, only the extended head of the stem branches was trimmed, and the rest was delayed until after the pruning after germination in April, which can ease the tree vigor and promote flowering results.