What kind of fertilizer should be applied to persimmon trees before and after harvest?

What kind of fertilizer should be applied to persimmon trees before and after harvest? Why do we have to apply fertilizer after harvest? Persimmon should apply nitrogen and potassium fertilizer before and after fruit harvest, replenish tree nutrients in time and improve the nutritional level of persimmon trees, which is beneficial to normal flowering and fruiting in the second year. The specific method is as follows: 15-20 days before persimmon fruit harvest, pre-harvest fertilizer is applied, mainly quick-soluble nitrogen fertilizer and potassium fertilizer. As a result, trees with more than 50 kg of urea, 0.5 kg of potassium chloride or potassium sulfate, or 1 kg of potassium sulfate are sprinkled or drenched with 50% water after rain. Application of postharvest fertilizer within 10-15 days after fruit harvest, mainly nitrogen, phosphorus, potassium complete fertilizer and high-quality organic fertilizer, combined with garden cleaning, all kinds of weeds around persimmon trees were cleared, ring ditches with a depth of 25cm and 30cm each were dug around the crown dripping line, 2kg of nitrogen, phosphorus and potassium compound fertilizer and 40kg of retting mature human, livestock and poultry manure were fully stirred and mixed evenly, applied in the ring ditch and covered with soil. Click to get more nitrogen, phosphorus and potassium application techniques click to get more chemical fertilizer application techniques click to get more persimmon planting techniques