Is urea applied to apricot trees in Shandong in January?

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What fertilizer is suitable for apricot trees?

2022-10-1515: 50 Author: Li View: 142 Comments: 0

1. What fertilizer is suitable for apricot trees?

1, fertilization type

(1) Before germination: quick-acting nitrogen fertilizer such as urea can be applied, and the fertilization amount is 0.25-0.5 kg/plant.

(2) Hard-core stage of fruit: mainly applying urea and other quick-acting nitrogen fertilizers, combined with phosphorus and potassium fertilizers, with the fertilization amount of 0.5- 1.0kg/ plant.

(3) Fruit expansion period: Potassium fertilizer, such as potassium sulfate, is mainly applied, and the amount of fertilization is about 0.5 kg/plant.

2. Preventive measures

(1) Fertilizer should be applied in ridges, and the soil should be covered immediately after fertilization.

(2) During the whole growing season of apricot trees, some fertilizers such as urea, potassium dihydrogen phosphate, rare earth micro-fertilizer and amino acid compound micro-fertilizer can be properly sprayed.

Second, the key to apricot fertilization

1, base fertilizer

(1) The new shoots of apricot trees usually stop growing from September to June every year. At this time, apricot trees should be applied with sufficient base fertilizer, mainly organic fertilizer (such as manure, chicken manure and other fertilizers), and some quick-acting fertilizers should be applied at the same time.

(2) The specific fertilization amount of apricot trees should be determined according to the size and growth of the trees. Under normal circumstances, when applying base fertilizer, 30-50 kg of organic fertilizer and 0.5 kg of special compound fertilizer for fruit trees can be applied to each plant.

2. Fertilize before flowering

After soil thawing in spring, nitrogen-based fertilizer should be applied in time to supplement the lack of storage nutrition of trees, ensure orderly flowering, good pollination and fertilization, improve fruit setting rate, promote root growth and increase the early growth of new shoots.

3. Late flowering

(1) Nitrogen fertilizer is mainly combined with phosphorus and potassium fertilizer to supplement nutrient consumption at flowering stage, improve fruit setting rate and promote new shoot growth.

(2) At this time, the branches and leaves grow vigorously, and the young fruits will expand rapidly and need more nitrogen. If the supply is insufficient, it will hinder the growth of branches and leaves or cause serious fruit drop.

4. Buds are divided into chemical fertilizers.

(1) Before flower bud differentiation or hard core stage, nitrogen fertilizer was mainly applied, and phosphorus and potassium fertilizer were applied together.

(2) Fertilization can supplement the nutrients consumed during the growth of young fruits and new shoots, and promote flower bud differentiation and fruit expansion, especially for the fruit expansion of early-maturing varieties and the development of embryos and nuclei. If the nutrition is insufficient at this time and the nucleus and embryo are poorly developed, the fruit will not grow much in the future, and the flower bud differentiation will also be affected.

5. Fruit fertilizer

Potassium fertilizer is mainly applied, and it is applied before fruit harvesting 15-20 days. After fertilization, the fruit of middle and late maturity varieties can expand rapidly, increase fruit shape and improve yield and quality.

6. Harvest fertilizer

(1) Fruit harvesting and application, mainly nitrogen fertilizer, combined with phosphorus and potassium fertilizer.

(2) Topdressing is mainly aimed at middle-late maturing varieties and trees with weak tree vigor that consume more nutrients, so as to make up for the lack of nutrients caused by a large number of fruits, restore the tree vigor, increase the nutrient accumulation of trees, enrich branches, improve the wintering cold resistance, and lay the foundation for high yield in the next year.

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