First, thin fruit astringent persimmon In mid-May to early June, sweet persimmon in early June to early July, after the end of physiological fruit drop, according to the ratio of 20-25 leaves with a fruit, choose to stay strong and fruitless pest-free fruit , To remove the deformed fruit, pests and diseases fruit and branches less than 15 cm in length or 5 leaves below the branches of fruit on the branches and the results of the base and branches of fruit on the branches. Second, ring skinning For adult tree, in the middle of May, a circular peeling. The method is: Use a sharp knife to cut a band 2-3 mm wide on the main ring, and gently cut it with the tip of the knife, but do not harm the xylem. Then gently pick up and peel off the narrow bark with the tip of the knife. . The purpose of ring peeling is to prevent the persimmon leaves from producing nutrients in the photosynthesis process—carbohydrates are transported to the roots, which is beneficial to strong fruits. 3. Cultivated Weeding and Irrigation According to the growth of weeds, weeding and weeding were conducted 2-3 times in summer. And insist on the crown under the crown of 7-10 cm, 25-30 cm deep outside the crown. When the drought is in July-August, drought should be irrigated promptly. All persimmon gardens that have not been intercropped shall be covered with grass. The fertilizers can be preserved, the water, soil and fertilizers can be kept to prevent weeds and cold-crust, prevent sun-burning, and improve the soil. However, fire prevention should be done in dry weather. Fourth, top dressing May-June is the peak season for growth, strong roots and shoots. For the 1-2 year-old saplings, the fertilization amount per plant is 20 grams of pure nitrogen, 10 grams of superphosphate and 20 grams of potassium chloride. The fertilization rate per plant for 3-5 years is 2 times of 1-2 years. Adult tree The annual fertilization amount per acre was 4 kg pure nitrogen (reduced to 7.8 kg urea), 4 kg superphosphate, and 4 kg potassium chloride. And at the periphery of the vertical crown of the canopy, 5-10 cm of the sapling; at an area of ​​15-20 cm of the adult fruit tree, an excavation of an annular groove with a width of 20 cm and a depth of 20 cm. In the cloudy or sunny days before 9 o'clock in the morning and after 5 o'clock in the afternoon, the above three kinds of fertilizers will be filled and covered immediately. V. Pest Control The main pests and diseases include garden spot disease, angular spot disease, anthrax, and powdery mildew. Available Baume 0.3-0.5 lime sulfur or 50% thiophanate powder 800-1500 times spray. A 1:2:100 Bordeaux spray can also be used. The main pests are Periwinkle, Chafer, Periplaneta, Spotted leaflet, Persimoptera, Moth, etc. It can be sprayed with 40% omethoate 500-1000 times or 50% potassium phosphate 1000-1500 times. The moth is sprayed with 600-800 times the crystals of the insect Nepenta.
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