Autumn basal fertilization method for fruit trees The autumn fertilization time should be carried out immediately after picking fruit and clear gardens. The autumn basal fertilization should be 2-3 months ahead of winter basal fertilization. Autumn Schiff base fertilizer should be dominated by organic fertilizer (fertilizer, soil miscellaneous fertilizer, cake fertilizer, plant ash, etc.), supplemented by chemical fertilizers, so that the combination of improved soil and support, delayed and complementary effects. 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 finally spraying photosynthetic nutrient film fertilizer, help plants absorb a lot of light fertilizer, light energy, light, compatible with conventional fertilizers, nutrients supply plant growth and development to the limit. Fertilization method: available trench method or disk method. Gully application, in the canopy dripping line position to form a ring, rectangular, arc and other fertilization ditch, ditch depth 40-50 cm, the width of the ditch should be depending on the amount of fertilizer, the ditch should be flat. Spread the dry fertilizer in the ditch after watering, and cover the soil immediately after the water is dry. When fertilizing, the fertilizer should be applied layer by layer. The coarse fat such as leaves and weeds should be placed on the bottom layer. The top layer should be filled with organic fertilizer. Each layer of fertilizer should be coated with a layer of soil. The final amount of fertilizer should be 20-30 cm above the ground. Due to the staggered distribution of roots in adult orchard soils, discs can be applied, ie the topsoil can be split along the spacing or row spacing on one side of the plant, while the trunks should be shallow (8–10 cm) near the trunk, and it should be far away from the trunk. Deep (40-60 cm). Apply dry fertilizer and cover soil afterwards. In addition, apple trees and pear trees should be applied deeper, and peach trees and grape vines should be applied slightly lighter.
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