Strengthen fertilization In order to achieve the balance of citrus vegetative growth and reproductive growth, it is necessary to fertilize the trees and coordinate nutrition. For trees with large trees, more fruits, and weak vegetative growth, re-apply strong fruit fertilizer and a reasonable combination of nitrogen, phosphorus, and potassium fertilizers to fully meet the nutrient needs of fruit expansion and new shoot growth. For young trees with less fruit and vigorous growth, apply less fertilizer appropriately, especially control the amount of nitrogen fertilizer to prevent excessive growth and improve quality. Insist on the combination of ground fertilization and foliar fertilization. In the late stage of fruit expansion, spray 0.2% to 0.3% potassium dihydrogen phosphate or compound fertilizer or 20% plant ash extract and 1% superphosphate extract, 0.03% to 0.05% nitric acid. Rare earth can not only promote fruit swelling, but also promote coloring, sweeten and ripen early, improve quality and improve storage durability.
Scientific drought resistance September is the peak period for citrus fruit swelling and autumn shoot growth. Therefore, strengthening drought prevention is the key. Orange orchards with conditions must be irrigated in time; mountain orange orchards should be covered with grass to keep moisture and drought prevention; strengthen cultivating loose soil to protect moisture To prevent soil compaction and reduce water evaporation. Spray water on leaves in dry weather to increase air humidity.
Strengthen the prevention and control of pests and diseases During the swelling period of citrus fruits, the main pests are anthracnose, resin disease, rust ticks, red spiders, scale insects, and fruit suckers. The prevention and control should be strengthened in time to prevent fruit dropping and field disease before harvest, and improve the commodity rate and storability of the fruit.
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