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Disease prevention and pest control In the middle and later stages of persimmon tree fruit, the fruit is susceptible to anthrax and brown spot disease, resulting in a large number of fruit drop, covered with dark spots. Therefore, spray 800 times of diospyric acid per kilogram of water or 1000 times of 50% speed carotenoid WP at the size of 3 to 4 cm and 6 to 8 cm in diameter. In the fruit ripening period, if harmed with scale insects, should be sprayed 2 to 3 times 800 ~ 1500 times dead water solution, or 1000 times speed culling aqueous solution for prevention and treatment. During the autumn shoots, fresh shoots, leaflets, and greens were sprayed once and 800 times as a mixture of dipterex and 1000-fold dichlorvos was used to control various pests that harmed shoots.
Foliar Top Dressing In the middle and later stages of persimmon tree, every 15 days or so, foliar spray once 800 times Gaomei Organic Humectic Active Liquid Fertilizer, 1500 times enhanced Yunda 120 Mixture, or 500 times Plant Active Energy , 2500 times the benefits of micro-producing bacteria mixture, or 0.1% magnesium sulfate, 0.2% urea, 0.3% potassium dihydrogen phosphate, 500 times the green wind 95 mixture, even spray 3 to 5 times, evenly spray all the leaves and fruit It is appropriate to start dropping with drops of water.
After the persimmon tree results, the foliar dressing
Timely fertilization When the fruit size is 4 to 5 cm in size and the fruit size is basically determined, Shi Zhuang fruit fertilizer and pre-harvest fertilizer are mainly available for fast-acting instant NPK fertilization, and the results tree above 5 years old will apply urea 1.5~2 per plant. Kg, potassium dihydrogen phosphate 0.75 to 1 kg, or NPK fertilizer 1 to 1.5 kg, after the rain, or 60 to 80 kg of fresh water after the application, but also can make the decomposed feces water 40 ~ 60 kg after the application, or around the canopy drip line deep, width 20-30 cm wide ring groove. Before fertilizing, all weeds on the tree tray must be removed. After fertilization, the tree trays should be covered with rice straw or other weeds. The thickness of the grass should be 3 to 5 cm in order to improve the fertilization effect.