How to apply fertilizer for planting loquat

Loquat is an evergreen fruit tree, and its annual growth and fruit is not dormant, so its fertilizer requirement is larger than that of deciduous fruit trees. In particular, fruiting trees need more potassium. The types, amount and period of fertilization of loquat should be applied according to local conditions, such as soil fertility, tree age, plant growth, different growth periods of branches and roots, fruit growth and development stages, fruit yield and so on.

1. Fertilization for young trees: in order to promote the growth and formation of young trees as soon as possible, cultivate crowns with strong branches and leaves, and bear fruit early, so as to lay a good foundation for high and stable yield in the future; fertilization of young trees should be based on the growth of non-dormant growth throughout the year. Shoot promotion fertilizer was applied once before each shoot germinated in the four seasons (i.e. spring, summer, autumn and winter shoots). Every half a month or so, after the tender shoots spread their leaves, apply strong shoot fertilizer again. The root system of young loquat trees is thin and weak, and the absorption capacity of fertilizer is poor, so the fertilization concentration should be light, and it is appropriate to add appropriate amount of available nitrogen fertilizer to mature human and animal manure water, and the annual fertilization times should be about 8 times. 2. Fertilization of fruiting trees: after planting, loquat generally began to bear fruit in the third afternoon and entered the full fruit period from 8 to 10 years. During this period, we should not only grow trees and flowers, but also ensure high and stable yield every year, and fertilize not less than 3 times a year. Fruit picking fertilizer: loquat summer shoots are excellent fruiting mother shoots. Timely fertilization and cultivating a large number of strong loquat summer shoots is the key to ensure high quality and high yield of loquat every year. The application of fruit-picking fertilizer after loquat fruit harvest from May to June is beneficial to quickly restore the tree potential, concentrate a large number of large and neat summer shoots, enrich the fruiting mother branches, and promote the good differentiation of flower buds. Long-acting organic fertilizer, green manure, cake fertilizer and compost should be combined with available nitrogen fertilizer and phosphate fertilizer, and a ring ditch should be dug along the periphery of the crown dripping line. Organic fertilizer and phosphate fertilizer should be buried in the bottom layer, chemical fertilizer should be applied in the upper layer, and finally the fertilization ditch should be covered with soil. The amount of fertilizer applied accounts for 50% of the total fertilizer applied in the whole year.

Fertilizer for promoting flowering: applied to loquat trees before flowering from 9 May to October to meet the needs of loquat flowering and fruiting, it can not only promote good flowering, normal floral organ development, high fruit setting rate, but also improve the overwintering ability of young loquat fruits. This fertilization is a very important measure to prevent the fruit of loquat in large and small years and to ensure high and stable yield year after year. The late-acting human and animal manure water is mainly added with phosphorus and potassium fertilizer, and the amount of fertilizer application accounts for about 20% of the total fertilizer application in the whole year. Strong fruit fertilizer (also known as spring shoot fertilizer): it was applied after the fruit was fixed in 2mi-3 months. During this period, fertilization can not only promote a large number of spring shoots in time, promote and thicken the growth of branches, enhance the tree potential, but also greatly increase the fruit bearing rate, promote the rapid expansion of young fruits, reduce acid and increase sweetness, and improve quality and yield. The fertilization is mainly quick-acting chemical fertilizer, with emphasis on potash fertilizer. The amount of fertilizer applied accounts for about 30% of the total amount of fertilizer in the whole year. Extra-root topdressing: in order to more effectively improve the nutritional status of trees and enhance tree potential, extra-root topdressing was carried out every half a month with appropriate amount of plant growth regulators, nutritional additives and so on. The formula can be 0.3% urea + 0.3% potassium dihydrogen phosphate + Yebao or 0.3% potassium dihydrogen phosphate + 0.3% urea + Luwang No.1, etc.