How to promote citrus fruit enlargement in autumn
Strengthen fertilization in order to achieve the balance between citrus nutrition and reproductive growth, to do the tree fertilization, coordination of nutrition. The trees with large trees, many fruits, and weak nutrient growth weigh heavily on strong fruit fertilizers, and have reasonable combinations of nitrogen, phosphorus, and potassium fertilizers, which fully meet the needs of fruit growth and development of new shoots for nutrients. The young trees with few results and strong nutrient growth should be fertilized with less fertilizer. In particular, it is necessary to control the amount of nitrogen fertilizer, prevent leggy and increase quality. Adhere to the combination of surface fertilization and foliar fertilizer application. In the late stage of fruit enlargement, the leaves are sprayed with 0.2% to 0.3% of potassium dihydrogen phosphate or compound fertilizer or 20% of ash extract and 1% of superphosphate, 0.03% to 0.05% of nitric acid. Rare earth not only promotes fruit enlargement, but also promotes coloration, early sweetening, improved quality, and improved storage stability.
Scientific drought resistance in September is the peak period of citrus fruit enlargement and autumn shoot growth. Therefore, strengthening drought prevention is the key. Conditional orange groves must be timely irrigated; mountain orange groves should be fully covered with grass moisturizing and drought protection; To prevent soil compaction and reduce water evaporation. Dry leaves spray on dry weather to increase air humidity.
Strengthen Pest Control The main pests of citrus fruit during the expansion period are anthracnose, resinous disease, and rust mites, red spider, scale insects, and fruit sucking moth. The prevention and control should be strengthened in a timely manner to prevent pre-harvest fruit drop and disease in the field, and to increase the commodity rate and storage stability of fruits.
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