A: The purpose of autumn basal fertilization is to accumulate nutrients in fruit trees. It should be mainly organic fertilizers such as manure, soil miscellaneous fertilizers, cake fertilizers, and plant-wood ash, supplemented by chemical fertilizers, so that the combination of soil and supply can be improved, and the delayed effect and quick-effect complement each other. The application of fertilizers should pay attention to the proportion of nitrogen, phosphorus, and potassium fertilizers, and it is not appropriate to use too much available nitrogen fertilizer, otherwise it is easy to cause late autumn shoots. At the same time, it is necessary to apply trace elements in a targeted manner. Fertilizer application rate should be based on the size of fruit trees, nutritional status, and the number of fruiting and fruiting, mature fruit trees apply 40-60 kg of organic fertilizer per plant, 0.15 g of urea, 2 to 4 kg of phosphate fertilizer, and 0.5 kg of potassium fertilizer. Digital Sensor And X-Ray Units Digital Sensor And X-Ray Units,Dental Radiographic Device,Dental Radiographic Equipment,Dental Radiography Device Rolence Enterprise Inc. , https://www.rolencedent.com