Fertilizer management is the basis of a series of cultivation techniques, not only related to tree growth and development, but also directly related to the yield and quality of the fruit of the next year. Most of the organic fertilizers applied before planting cannot be immediately decomposed and absorbed by the grapes. Therefore, the topdressing should be carefully applied in the year of planting.
1. After the germination of the thin fertilization grape, the base fertilizer of the planting ditch is difficult to be absorbed and utilized due to the shallow root system and the small amount of roots. In order to promote the growth of seedlings, when the new shoots grow to 8-10 leaves, the first top dressing can be carried out, the concentration is 1% urea aqueous solution, and the topdressing is repeated every 15 days until the end of July. The concentration of fertilizer and water can be gradually increased with the growth of seedlings, but it is still mainly based on thin fertilizer, and it can also be applied to the thin and mature human waste water. When the seedlings reach a certain growth amount, the appropriate amount of N, P, K ternary compound fertilizer should be applied, and each plant should be applied for about 20 grams to promote the occurrence of new roots and flower bud differentiation, and cultivate a strong grape vine potential.
2, the external top dressing from June to August monthly 1 to 2 times outside the top dressing, spraying 0.3% urea + 0.2% potassium dihydrogen phosphate mixture, for deepening leaf color, thickening leaves, promoting flower bud differentiation has good effect. Root dressing can also be combined with anti-disease and fungicides.
Source: Hebei Daily Rural Edition
1. After the germination of the thin fertilization grape, the base fertilizer of the planting ditch is difficult to be absorbed and utilized due to the shallow root system and the small amount of roots. In order to promote the growth of seedlings, when the new shoots grow to 8-10 leaves, the first top dressing can be carried out, the concentration is 1% urea aqueous solution, and the topdressing is repeated every 15 days until the end of July. The concentration of fertilizer and water can be gradually increased with the growth of seedlings, but it is still mainly based on thin fertilizer, and it can also be applied to the thin and mature human waste water. When the seedlings reach a certain growth amount, the appropriate amount of N, P, K ternary compound fertilizer should be applied, and each plant should be applied for about 20 grams to promote the occurrence of new roots and flower bud differentiation, and cultivate a strong grape vine potential.
2, the external top dressing from June to August monthly 1 to 2 times outside the top dressing, spraying 0.3% urea + 0.2% potassium dihydrogen phosphate mixture, for deepening leaf color, thickening leaves, promoting flower bud differentiation has good effect. Root dressing can also be combined with anti-disease and fungicides.
Source: Hebei Daily Rural Edition
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