Answer: In the garden in the first year, when the new shoots reach about 15 cm in length, about 10 kg of urea is applied per acre, about 10% of human and animal manure, the concentration is 0.5% of urea, and about 10% of human and animal manure is mixed with water. The Victoria varieties are applied once each at a new tip of about 15 cm and a new tip of about 30 cm according to the above concentration and dosage. Results For trees over two years old, the weaker species such as Victoria, should be applied with 20 kg of urea per mu when the new shoots are about 15 cm, and 10 manure and manure. Concentration: urea is 0.5%, and human and animal manure is applied with water 15%. European and American hybrids such as summer black, sunset red, nitrogen control before flowering, fertilization before flowering is strictly prohibited.
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