How to fertilize Chinese chestnut in summer?

How to fertilize Chinese chestnut in summer? Summer is the exuberant period of flowering, fruiting and branch growth of Chinese chestnut, and it is also the first peak period of root growth of chestnut. Lack of nutrition will affect the normal growth of chestnut, resulting in an increase in the number of empty bracts of chestnut fruit, low yield and poor quality. In summer, chestnut mainly adopts soil and extra-root fertilization methods to supplement the nutrient demand of chestnut trees. 1. The method of soil fertilizer application. In the chestnut orchard with thin soil and serious lack of fertilizer, the effect of soil fertilizer application is better. The method is to dig a circular ring trench in the chestnut crown dripping line, with a width of 25 cm and a depth of 20 cm, applying 1 kg of calcium superphosphate, 300 g of urea and 250-500 g of borax. During application, urea and borax should be dissolved in water and then ditched, sprinkle water while fertilizing, and mix fertilizer with soil with a hoe, so that fertilizer and water can be absorbed and utilized by roots as soon as possible, and return to the soil to fill the ditch in time after fertilization to prevent nutrient volatilization. If an appropriate amount of soil miscellaneous fertilizer is added to fertilize the soil, it will have a good effect on more fruit and reducing the empty bract rate of Chinese chestnut in the coming year. 2. Extra-root fertilizer application. The method of extra-root fertilizer application is suitable for chestnut trees on all kinds of soil in summer. The method is to mix 0.3% Mel 0.4% urea solution, 0.3% Mel 0.5% potassium dihydrogen phosphate solution and 0.3% Mu 0.4% borax solution evenly, spray once every 10 days, and spray twice in a row. Click to get more chestnut planting techniques click to get more fruit planting techniques