1. Basal fertilizer: Apply the soil before falling leaves in autumn. Calculate the amount of basal fertilizer according to the amount of the results. Generally, the amount of basal fertilizer is 100 kg for each result. The amount of basal fertilizer is 150 to 200 kg for ring fertilizer, 3 to 5 kg for phosphate fertilizer, and 0.2 to 0.3 kg for potassium sulfate. Foliar sprayed seedlings increased 500-600 times and accumulated nutrients to prevent years of age.
2. In the bud stage to the shoot growth stage: Use 800-1000 times of leaf greenening or seedling growth, or 2000 times of leaching root, and use it once every 7-10 days. Use it continuously for 2-3 times.
3. Early flower bud differentiation: Apply 0.1 kg of urea, 0.05 kg of superphosphate, and 0.02 kg of potassium sulfate to each plant. Mix the fertilizer and topsoil into the trench and then cover the soil with water. During the flower bud differentiation period, the flowers were sprayed twice with 800-1000 times of flower growth, and the interval was 7 days.
4. After fruit set: the strain applied 45% of compound fertilizer 0.1 to 0.15 kg. At the same time, drip irrigation was applied to the grapes once every 7-10 days (amount of 0.75 to 1 kg per acre) and used continuously for 3 to 4 times.
5. Early berry coloring: 1 month before fruit ripening, 0.05 to 0.1 kg of potassium sulfate per plant, 0.1 to 0.15 kg of diammonium phosphate, 800 to 1000 times better with the use of fruit, increased sugar content and increased coloration.
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