One-year pesticide application schedule for apple trees

Generally speaking, apple trees over three years old should be sprayed with 100 times of "general liquid for tree protection" and Bomei 3-degree sulfur mixture for garden cleaning and disinfection, which will not only sterilize and kill insects, but also shock the "gene alarm clock" of fruit trees, remind them to wake up from hibernation in time, stimulate plant nerves, and prevent and control all kinds of red spiders, scale insects and overwintering eggs. Spraying biological pesticides to control aphids and bent leaves in early April. In early April (after germination), spraying 0.3% urea solution and potassium dihydrogen phosphate solution 1-2 times alternately every 7- 10 days is beneficial to strong branches and leaves, promoting the generation of new roots, gradually restoring tree vigor and ensuring long-term vitality. When spraying foliar fertilizer or pesticide on fruit trees every day, adding 100 times of "Guan Shu bacteria" solution can inhibit the replication of infectious viruses, resist the infection of airborne viruses, and protect the population and quantity of beneficial animals, earthworms and natural enemies of fruit tree pests. Therefore, it is very important to protect natural enemies while eliminating pests and diseases.