1. Control the amount of nitrogen fertilizer, increase the proportion of phosphorus and potassium fertilizers, and keep the ratio of nitrogen, phosphorus, and potassium fertilizers at 1:0.6:1. 2. Spray 0.2% potassium dihydrogen phosphate 2 to 3 times, spray 0.3% urea 1 to 2 times after fruit picking to promote photosynthesis of fall foliage and restore tree vigor. 3. Postponed picking, bagging pear harvesting can only be harvested when the pear is ripe, generally 7-10 days later than bagging pears. Fourth, change the structure of the tree, enhance ventilation and light transmission, strengthen disease prevention and pest control, and improve the function of leaves.
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