Hawthorn new roots occur earlier in spring, and Huaibei area is suitable for sowing and seedling raising in autumn. The plant spacing is 3 ~ 4m in barren soil, and 4 ~ 5m in fertile soil and flat terrain. When planting, two or three varieties should be planted on the branches to improve the fruit setting rate. 1 soil fertilizer and water management 1. 1 soil management Deep ploughing and ripening are the basic measures in yield-increasing technology. Deep ploughing and ripening can improve soil, increase soil permeability and promote tree growth. 1.2 Apply base fertilizer, and apply base fertilizer in time after failure to supplement tree nutrition. The base fertilizer is mainly organic fertilizer, and 3000-4000 kg of organic fertilizer, 20 kg of urea, 50 kg of calcium superphosphate and 500 kg of plant ash are applied per mu for ditching. Topdressing is generally applied 3 times every 65,438+0 years. When the juice begins to flow in mid-March, urea should be applied to each plant to supplement the nutrients needed for tree growth, laying a good foundation for improving the fruit setting rate. After flowering, 0.50 kg urea was applied to each plant to improve the fruit setting rate. Before flower bud differentiation at the end of July, 0.50 kg urea, 0.50 kg 65438+ calcium superphosphate and 5 kg plant ash were applied to each plant to promote fruit growth and improve fruit quality. Water 1.3 Generally, water should be poured four times a year, and 1 time after topdressing in spring if irrigation conditions permit, so as to promote the absorption and utilization of fertilizers. Combined with topdressing and watering after flowering to improve fruit setting rate. Water 1 time after wheat harvest to promote flower bud differentiation and rapid fruit growth. Pouring frozen water, timely pouring frozen water in winter, is conducive to the safe overwintering of trees. 2. Plastic pruning 2. 1 winter pruning 2. 1. 1 to prevent internal baldness. Because the periphery of hawthorn tree is easy to branch, the periphery is often closed, the internal branchlets grow weakly, the dead branches increase year by year, and the middle and lower parts of big branches at all levels are gradually bare. The measures to prevent the inner chamber from being exposed should be based on the principle of combining thinning, shrinking, cutting, changing, renewing and rejuvenating, thinning the main branches, peripheral dense branches, competitive branches, long branches, pests and diseases, shrinking and shearing the main side branches, and selecting buds at appropriate positions for small renewal to cultivate strong branches. The methods of rejuvenation of weak branches and carving of bare buds were reformed. 2. 1.2 After the hawthorn tree enters the fruiting period, all the full-grown new shoots, terminal buds and 1-4 buds below can differentiate into flower buds, so the pruning of hawthorn should use less short cutting methods to protect flower buds. 2. 1.3 After the rejuvenated hawthorn tree entered the fruiting period, it continued to bear fruit for many years, resulting in drooping branches, gradually weakened growth potential, scorched shoots on the main branches and decreased yield. It is necessary to update the branches in time and restore the tree. Branches that bear fruit for many years or other redundant branches, drooping branches, scorched branches and perennial branches should be retracted to the strong branches at the back, and the branches at the back should be used to take the lead to enhance growth potential and promote yield increase. 2.2 Pruning in summer 2.2. 1 has strong ability of sprouting. Generally, 2-3 lateral buds at the top of branches can grow strong branches, and many branches grow around the crown every year, which makes the crown closed and has poor ventilation and light transmission. Therefore, the development branches that are out of date and too prosperous should be thinned out as soon as possible. Remove all the branches sprouting from the lateral buds at the lower part of inflorescence, overcome the nakedness of the middle and lower parts of big branches at all levels, and prevent the fruiting parts from moving out. 2.2.2 When new buds stop growing in late July in summer, the branches should be leveled to slow down growth, promote flowering and increase yield. 2.2.3 Core-taking In the first half of May, when the inner branch of the crown grows to 30-40cm, leave 20-30cm for core-taking, so as to promote the formation of flower buds and cultivate compact fruiting branches. 2.2.4 Generally, girdling is carried out on the auxiliary branch, and the girdling width is110 of the thickness of the stripped branch. 3 Pests and Diseases Control The main pests of hawthorn are red spider, peach fruit borer and peach fruit borer, and the diseases include ring rot and powdery mildew. 3.1Control red spider and peach fruit borer from early May to early June, spraying triadimefon 2500 times. 3.2 In mid-June, the trees were sprayed with 100— 150 times of parathion EC to kill the overwintering peach aphid. In early July and mid-August, the trees were sprayed with 1500 times of parathion EC to kill the eggs and newborn larvae of peach fruit borer. 3.3 Spraying 80% carbendazim 800 times per week after flowering, and spraying bactericide/kloc-0 times per week in mid-June, late July and early August. 3.4 Spraying 1 times 5- poor sulfur mixture before germination, spraying 600 times 50% WP carbendazim or 50% WP thiophanate-methyl 1 times in bud stage and June respectively.