Second, soil selection: loam with convenient irrigation and drainage should be selected.
Third, the transplanting time: the planting time should be from April to September, and it should be carried out on sunny days. Pay attention to ensure that the soil balls of seedlings are in good condition. The planting depth can be fixed to keep the original soil surface just exposed by the seedlings.
Fourth, water and fertilizer management after planting: after planting, root water should be thoroughly irrigated to keep the soil moist. After two months, the seedlings begin to grow new leaves, and topdressing should be done in time at this time.
5. Root-cutting treatment: Root-cutting treatment must be carried out 2-3 months in advance for transplanting large seedlings to improve the repeated survival rate. The best time for root cutting is from April to September, and winter should be avoided.
6. Upright pole: Large plants must also be fixed with vertical poles. Leaf spot disease: spraying medicine from the early stage to prevent the spread of the disease. Commonly used drugs are 20% prochloraz 1000 times, 38% tribenuron-methyl 800- 1000 times or 4% fluorosilicone 1000 times, 50% thiophanate 1000 times and 70% mancozeb 50 times. Attention should be paid to the alternate use of chemicals to avoid drug resistance of bacteria.