In winter, low-temperature frost will cause a lot of fruit drop in the octagonal and reduce production. The following technical measures must be promptly taken to preserve the fruit, in order to reduce fruit drop, increase fruit set rate, and increase yield. One, Shi Yue winter fertilizer. Phosphorus and potassium fertilizers and organic fertilizers are mainly used to increase nutrient accumulation, enhance tree vigor, and improve cold resistance. For trees above 10 years of age, apply 1-1.5 kg of potassium dihydrogen phosphate to each plant and mash up 25-30 kg of degraded livestock and poultry manure. Dig 6-8 strips of 80-100 cm long and 30-40 mm wide under the canopy. Centimeter, depth 15-20 cm of the radiation groove, the fertilizer applied to the ditch, covering the soil can be. Second, spray surface fertilizer. In the winter, once every 7-10 days, foliar spraying once 0.3% potassium dihydrogen phosphate, 1500 times Shennongsu chelate fertilizer, 5,000 times Yunda 120 mixture, or spray 1,000 times Green Fenway 1, 5000 times Huangjia Natural Yunda-120 mixture, or spray 1,000 times the Green Fenwei 1, 5000 times natural Jiachalin, 1,000 times more than the mixed liquid, even spray 3-5 times, evenly spray all the leaves and fruit It is advisable to start dropping with drops of water. Third, prevent pests and diseases. Octopus fruit is affected by locusts, scale insects, and anthrax in the winter, and it also causes a large number of fruit drop. It must be sprayed and prevented in time to protect the fruit, combined with foliar dressing, adding 2,500 times the net to death, 2,500 times the net, 800 The tyroprobustrin mixture was sprayed with water, or 1500-fold aqueous amidophos, 1,000-fold carbendazim, and 800-fold dicofol mixed sulfur were sprayed. Fourth, cold insulation. Before the onset of the cold wave, turf mud was used in the park, and various dead leaves, hibiscus and other fires were used to create smoke to increase the temperature around the octagonal garden to prevent cold damage and frost damage. If frost is formed on the plants, clean the well water before the frost particles dissolve, and rinse the frost particles. China Agricultural Network Editor