First, the fertilization and soil change persimmon tree is a deep-rooted tree species. In the winter, it is necessary to expand the hole to change the soil. The hole length is 1 to 1.5 meters, the width is 0.4 meters, and the depth is 0.4 to 0.5 meters. When backfilling the topsoil, the plant will apply 100-150 kg of soil and fertilizer, 50 kg of pig manure, 100-150 kg of mushroom soil or 1 to 1.5 kg of calcium, magnesium and phosphate. For high-yield persimmon trees, 6.5 kg of pure nitrogen fertilizer, 2.5 kg of pure phosphate fertilizer and 0.6 kg of pure potassium fertilizer should be applied per mu.
2. Pruning branches with tall canopy or branching and shaded adult production trees, which should be retracted and pruned after winter leaves, using short shears as the main method, shrinking and combining methods, cutting dense branches, cross branches, long branches and diseases Dead branches make the branches distributed reasonably.
Third, the winter clearing of the winter garden should thoroughly remove the diseased fruit, diseased pedicles, dead branches and fallen leaves, and eliminate the source of wintering pests. The persimmon tree with heavy damage to scale insects should be sprayed with 95% oil emulsion 150 times liquid or 5 wave metostone sulfur mixture before and after germination in winter to spring.
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