There are two methods for fertilizing chestnut in summer.


First, the soil fertilization method: the soil is thin and the fertilizer is seriously lacking. The method is to excavate a circular ring groove in the drip line of the sapling tree, the groove width is 25 cm, the groove depth is 20 cm, and each plant is applied with 1 kg of calcium phosphate , 0.3 kg of urea and 0.25 kg of borax . When applied, urea and borax should be dissolved in water before application, and water should be poured while fertilizing, and the fertilizer and soil should be mixed with steamed bread. The fertilizer water is infiltrated into the roots as soon as possible and absorbed by the roots. After fertilization, the soil is backfilled in time to prevent nutrient volatilization. If the appropriate amount of soil is used to fertilize the soil during fertilization, the effect of reducing the openness rate in the next year is good.

The second is the external top dressing method: this method of fertilization can be effective for all kinds of soil millet in summer. The method is: mixing 0.3% - 0.4% urea solution, 0.3% - 0.5% potassium dihydrogen phosphate solution, 0.3% - 0.4% borax solution, spraying the crown on the sunny day before 9 am or after 3 o'clock in the evening, every 10 days. Spray again, even spray twice. After spraying, it must be re-sprayed in heavy rain within 10 hours to ensure the effect of fertilization. If the soil fertilization method and the root-external top dressing method are combined in summer, the millet millet has an obvious effect of increasing yield.

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