Spring shoot fertilizer should be applied to adult loquat trees in time.

Loquat likes warm and humid climate, blossoms in autumn and winter, and fruit ripens in late spring and early summer. Since last autumn, there has been drought and little rain in Guangdong, so fruit growers should actively water and fertilize loquat, especially adult trees should apply spring shoot fertilizer in time to strive for a bumper harvest this year. 1. Fertilization for young trees (1-3 years) fertilization for young loquat trees should be based on the principle of thin application. After planting survived, the first fertilizer was applied when the sprouts grew to 5 cm, mainly with quick-acting nitrogen fertilizer, accelerated phosphate fertilizer and clear water manure. Once every 15 days, 10 grams of urea, 5 grams of calcium superphosphate and 5 kilograms of clear fecal water were applied to each plant. Fertilization once a month after September, with nitrogen, phosphorus and potassium combined application, each plant can apply 10 grams of feces, 10 grams of calcium superphosphate. In the second year, fertilization was applied once in February, March, May, September and October, and stopped from early June to August, and water was controlled to promote flower bud differentiation. Nitrogen, phosphorus and potassium were applied together, and the amount of fertilizer was increased with the increase of tree crown. In the third year, fertilization was applied once in February, March, June, September and November respectively. Second, adult trees fertilize loquat adult trees three times a year. The first application of spring shoot fertilizer was applied in the first and middle of February, when the root system was in the first growth peak, which was convenient for nutrient absorption. The main function of this fertilizer was to promote spring shoot and increase fruit. The amount of fertilizer applied accounts for about 30% of the whole year, mainly quick-acting fertilizer, and potash fertilizer is also applied this time to promote the expansion of young fruits. Can apply urea 30 kilograms per mu, superphosphate 15 grams, potassium sulfate 30 kilograms, human and animal dung water about 1500 kilograms. The second application of summer shoot fertilizer was after fruit harvest from mid-May to early June (late-maturing varieties were applied before fruit harvest). At this time, it was the second peak of root growth, which was mainly to promote summer shoots, cultivate fine fruiting branches, and promote flower bud differentiation from July to August. Because the summer shoots are many and neat, and the multi-shaped fruiting mother branches in the same year, promoting the summer shoots is the main measure to ensure high yield year after year. Therefore, the amount of fertilizer application is relatively large, accounting for about 50% of the whole year, using available nitrogen fertilizer to form organic fertilizer, and all phosphate fertilizer for the whole year. Generally, 50 kg of urea, 60 kg of superphosphate and 2000,3000 kg of organic fertilizer (pig manure water) are applied per mu. The third application of autumn fertilizer or pre-flowering fertilizer was applied before heading and flowering from September to early October, accounting for about 20% of the whole year, mainly to promote good flowering, improve fruit setting and increase the ability to prevent cold and winter. Mainly to slow-acting fertilizer, 15 kg of urea per mu, 1500 kg of clear water dung.