Fertilization is the key to early fruiting and high yield of loquat
Fertilization of young trees should be applied 5 to 6 times a year. In the first year of planting, ****** was administered once a month. Use dilute human feces and urine or organic fertilizer mixed with inorganic fertilizer, and apply 1 to 1.5 kg per plant 25 to 30 cm around the tree. From the second year onwards, apply a shoot-promoting fertilizer before each new shoot germinates, and then apply a shoot-promoting fertilizer once every 15 to 20 days after the tender shoots show their leaves. Fertilization should be light this time. It is advisable to use decomposed human and animal manure and urine plus appropriate amount of quick-acting nitrogen fertilizer. Generally, 15 kg of mature and diluted human and animal manure and urine, or 150 grams of compound fertilizer.
The fertilization of fruit picking fertilizer is the most important fertilization in the annual growth of loquat. Generally, it is applied after the fruit is picked, and the fertilizer is mainly quick-acting fertilizer, combined with deep plowing, more fully decomposed organic fertilizer can be applied. Take 35 kg of plant as an example, apply 50 to 70 kg of organic fertilizer, 0.5 kg of urea, 2 kg of phosphate fertilizer or 0.75 kg of compound fertilizer, and 10 kg of chicken manure.
Flower-promoting fertilizer: This fertilizer is applied before the differentiation of loquat flower buds basically ends and the flower spikes begin to emerge from September to October. The main fertilizer is organic fertilizer, the ratio of nitrogen:phosphorus:potassium is 5:4:5, the fertilization amount accounts for 20%-30% of the whole year, 40-50 kg of human and livestock manure or 1.5 kg of organic biological fertilizer, or chicken manure 10 kg.
Strong fruit fertilizer This fertilizer is very important and is related to the quality and size of the fruit. It should be applied in February to March after fruit thinning. This fertilizer firstly promotes the growth of spring shoots and roots, and enhances tree vigor; the second is to promote the rapid expansion of young fruits, reduce fruit drop, and promote and enrich spring shoots. The fertilizer should account for 10%-30% of the annual fertilizer application. The plant should apply 30-50 kg of dilute manure, add 0.3-0.6 kg of compound fertilizer, or 1 kg of biological organic fertilizer. The depth of fertilization in this period should be shallow to avoid root damage.
For fruit trees with a lot of extra-root topdressing, supplement their nutrition with extra-root topdressing in time, and spray foliar fertilizer 2 to 3 times during the period of rapid fruit expansion. Loquat is a potassium-loving crop, and more potassium fertilizers should be applied, but we should also pay attention to the reasonable combination of various nutrients to prevent partial or excessive application of a certain fertilizer. There is more potassium, the sugar is sweet, but the fruit is thick and hard; the nitrogen is more, the fruit is large, but the internal quality of the fruit is reduced, and the taste is not good. Therefore, reasonable fertilization is recommended.
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