Two methods of chestnut summer fertilization

In order to improve the yield and quality of chestnut, chestnut trees should be fertilized in summer, and there are two main methods of fertilization:

Soil fertilization method The chestnut orchard with thin soil and severe fertilizer deficiency has better fertilization effect by soil fertilization. A circular ring ditch was excavated in the chestnut canopy drip line. The ditch was 25 cm wide and 20 cm deep. Each plant applied 1 kg of calcium phosphate, 0.3 kg of urea, and 0.25 kg of borax. When fertilizing, urea and borax should be dissolved in water first, then ditched, and water is poured while fertilizing. After fertilization, return to the soil to fill the ditch in time to prevent nutrient volatilization. If you apply the appropriate amount of soil and fertilizer to fertilize the soil during fertilization, it will be effective in promoting the results of the chestnuts in the next year and reducing the openness.

The external fertilization method is effective for chestnut trees on various soils in summer. After mixing 0.3%-0.4% urea solution, 0.3%-0.5% bismuth potassium hydrogen phosphate solution and 0.3%-0.4% borax solution, the crown is sprayed before 9:00 am or after 3 pm on sunny days, and sprayed again every 10 days - Once, even spray twice. After spraying, it must be re-sprayed in heavy rain within 10 hours to ensure the effect of fertilization.

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