Nanfeng mandarin orange cultivation techniques (the first batch at the provincial level) Nanfeng mandarin oranges are derived from milk oranges. Nanfeng is located in a subtropical monsoon climate with warm winters and cool summers, abundant rainfall, and soft soil. These are ideal geographical conditions for the cultivation of Nanfeng mandarin oranges. Before the Tang Dynasty, Nanfeng had already produced red oranges. Since the Tang and Song Dynasties, Nanfeng mandarin oranges have been listed as tribute by successive imperial courts, so they are known as "tribute oranges." After thousands of years of cultivation, although they are derived from milk oranges, Nanfeng mandarin oranges have new properties, with a sweeter taste, high sugar and low acid, and a rich aroma. They are unique among oranges, so they are called "mandarin oranges." As an excellent citrus variety, Nanfeng mandarin oranges grow vigorously, with a tree height of 3.54.5 meters and a crown diameter of 5-6 meters. Generally, an adult tree produces 75-125 kilograms, with a maximum yield of 625 kilograms, and an economic lifespan of more than 70 years. Nanfeng mandarin oranges bloom in April, The fruit matures in November, weighing 25-50 grams. The fruit is oblate, regular in shape, orange-yellow in color, tender in texture, with few seeds and much juice, thin and smooth peel, and a strong aromatic flavor. During long-term cultivation, many varieties have been formed due to bud mutation and natural hybridization, including large-fruit series, small-fruit series, osmanthus pedicle series, and early-maturing series. The excellent quality of Nanfeng mandarin oranges is closely related to traditional cultivation techniques. For example, in the process of seedling grafting, the main methods used before the founding of New China were grafting, seedling method, and fruit pressing method. Later, the spring cutting method and the autumn small bud glue grafting method were adopted, resulting in a large number of reproductions and a high survival rate. For orchard construction, choose a low-lying area on the south slope that is sheltered from the wind and facing the sun with sufficient water resources. During the cultivation process, sparse planting is advocated, with spring cultivation as the main method and autumn planting as the main method. Auxiliary. The key role in cultivation is soil and fertilizer. The traditional operation method is to fertilize the pond mud every year and apply human and animal feces and urine. Modern management methods have been slightly improved. The first is deep plowing and soil improvement, soil maturation, directional planting ditches, landfilling of organic fertilizers, and planting of green manure on the surface of the soil. In the prevention and control of diseases and insect pests, Nanfeng mandarin oranges mainly adopt artificial killing and mite treatment technology, supplemented by appropriate amount of pesticide spraying. Nanfeng mandarin oranges are rich in nutrients and are treasures all over. In addition to being eaten, it is also an important Chinese medicinal material. The orange peel regulates qi and strengthens the spleen, and resolves phlegm; the orange peel is popular and resolves phlegm, smoothes qi and treats blood, and can also treat coughs, chest and rib pain and other diseases; the orange seed regulates qi, disperses knots, and treats hernias; the orange leaves and green peel soothe the liver and relieve depression, break up qi and disperse knots. In addition, it is also a high-quality processing raw material product.