1. The pruning is carried out according to the principle of “pruning by the tree and shaping with the branchesâ€. First of all, remove the overlapping, densely squeezed, cross-branched branches, leaving the large branches with good orientation and good growth, so that they are evenly distributed and do not affect each other. In order to take care of the output and restore the tree potential, some large branches are removed step by year, that is, 1-3 are removed in the first year, and the remaining large branches are retracted to control their growth and temporarily retain the results. Continue to transform in the second and third years. Secondly, carry out detailed pruning to adjust the relationship between growth and result: (1) To remove the dense branches and weak branches, and to retract the long branches as much as possible to make the branches compact, promote growth and form a strong nutritional branch. (2) The healthy branches should be lightly cut and promoted to promote the formation of robust results. (3) The lengthy result should be properly retracted to increase the fruit setting rate and ensure the fruit is good.
2. Scrape the skin in early spring, scrape off the old skin on the trunk and the big branches, and destroy the pests such as pears, leaf curlers, star caterpillars, and red spiders in the potential old skin. After the first year of scraping, it must be 1-2 years before it can be scraped again, so that the latent buds can be broken out to form long branches, renew the crown or cultivate the resulting branches.
3. Plane tree trays are used for 1-3 times in the spring and summer to loosen the soil, remove the roots and improve soil aeration, water and nutrient status.
4. Skillful fertilization base fertilizer masters early autumn application, mainly organic fertilizer, applying organic fertilizer 3000-4000 kg per mu, adding 20 kg of urea, 50 kg of superphosphate, 500 kg of ash. Topdressing is generally followed by 3 times in 1 year. When the sap begins to flow in mid-March, 0.5-1 kg of urea is applied to each plant to supplement the nutrients needed for tree growth, so as to lay a good foundation for improving the fruit setting rate. The plant applied urea 0.5 kg. At the end of July, before the flower bud differentiation, each plant applied 0.5 kg of urea, 1.5 kg of superphosphate, and 5 kg of ash, to promote fruit growth and improve quality.
5. Watering is generally done 4 times a year in water, and in the spring, there is a watering condition to pour water once after topdressing to promote the absorption and utilization of fertilizer. After flowering, combine topdressing and watering to increase the fruit setting rate. The fruit is poured once to water, which promotes flower bud differentiation and rapid fruit growth. In the winter, the frozen water is poured in time.
6. Flowering gibberellin sprayed at the end of May and early June to preserve flowers and promote fruit. 1 g of gibberellin, dip with 5-10 g of alcohol, spray 20 kg of water into 50 ppm of gibberellin solution to the canopy, focus on spraying flower clusters, see dripping water, can increase the fruit setting rate 1-2 times or more And make the fruit ripe and mature in advance.
7. The root dressing is from the end of June to August, and the top dressing is 3-5 times. Spraying 0.3%-0.5% urea every 10-15 days, spraying boron at the flowering stage (using 0.5% boric acid solution), spraying in August 1- 2 times 0.3% potassium dihydrogen phosphate.
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