I. Before germination (mid-late March)

Top dressing

This topdressing is bud fertilizer to call flower again before fertilizer. The types of fertilizer were mainly nitrogen fertilizer, urea for 1-3 years of trees 10-15 kg/mu;4-5 years old trees 20-25 kg/mu; Trees over 6 years old 30-35 kg/mu. Water immediately after fertilization.

II. Before and after germination and flowering (early April to early May)

Spray foliar fertilizer

Before flowering at germination, 2-5% zinc sulfate was sprayed to prevent lobular disease and 2-4% ferrous sulfate was sprayed to prevent yellow leaf disease.

III. Spring shoot speed long before wheat harvest (mid-May to late June)

Irrigation fertilizer

The topdressing is flower bud cent fertilizer, call again after flower fertilizer, pull pile fertilizer. The fertilizers were mainly diammonium, and the amount of fertilizer applied was as follows: 1 -- 3 years of trees, 10 -- 20 kg/mu;4-5 years old trees 30-50 kg/mu; Trees over 6 years old 50-70 kg/mu. Irrigation of 10-15 kg per plant to meet the demand for water and fertilizer for flower bud and fruit development.

Iv. Fruit Expansion period (July to August)

1, Spraying foliar fertilizer

During fruit expansion, 0.2-0.3% potassium dihydrogen phosphate was sprayed on the back of leaves to promote flower bud differentiation and fruit expansion. Can also spray calcium treasure and fruit ammonia treasure and amino acid foliar fertilizer, can promote fruit expansion, improve sugar content, improve fruit appearance quality, prevent physiological diseases.

2, Topdressing fertilizer 

This topdressing is fruit expansion fertilizer. The fertilization type was mainly potassium sulfate, and the 4-5 year old trees were 30-50 kg/mu. More than 6 years old trees 60-90 kg/mu.

V. Fruit coloring and ripening period (September to October)

In the fall of fertilization

This fertilization is nutrient accumulation fertilizer. The main fertilizer type is organic fertilizer, combined with deep soil improvement, a certain amount of fertilizer. Fertilizer application: 1 -- 3 years of raw tree mu applied 1500 -- 3000 kg of barnyard manure (high quality organic manure can be reduced as appropriate) + 12 -- 24 kg of urea + 15 -- 30 kg of phosphate fertilizer;4-5 years of fresh tree mu applied 3000-4500 kg of barnyard manure (high quality organic manure can be reduced as appropriate) + urea 24-30 kg + phosphate fertilizer 30-40 kg; More than 6 years tree mu applied 4500-9000 kilograms of barnyard manure (high quality organic manure can be reduced as appropriate) + urea 30-36% kilograms + phosphate fertilizer 40-45 kilograms.