Fertilization in the vineyard should grasp the following five fertilization periods:
First, after the appearance of the wound fluid in spring, before germination. Mu can be applied to the sulfur-based 16-16-16,15-15-15,18-10-20,20-12-16,20-25kg. If the end of the year is more than enough fat, this time can not be applied as appropriate, otherwise it should promptly the first time in early spring fertilizer.
The second is before flowering. Mu-based sulfur-based 20-12-16, 20-25kg, has the effect of increasing the ear and reducing the fall of flowers, especially for vineyards with more spikes.
The third is after flowering. When the fruit grows to the size of mung bean, the sulfur-based 18-18,18-10-20,15-25kg sulfur-based mu can promote fruit development and coordinate the growth of leaves.
The fourth is the initial stage of fruit coloring. Mu sulfur-based 18-10-20, 18-12-18, 15kg or so, with the promotion of fruit enlargement, rapid increase in sugar content, increase the role of fruit color.
Fifth, after the fruit is harvested, it should be given full weight. All organic fertilizers to be applied in the plan are formulated with a general fertilizer with a ratio of N, P and K of 1: 1 : 1 of 20-25 kg per acre, and they are mixed once to promote the second growth peak of the root system and promote the restoration of tree vigor and increase. The storage of organic nutrients in the tree plays an important role in promoting flower bud differentiation. The application of base fertilizer is a weak link in the fertilization of vineyards all over the country and must be given due attention.
Each fertilization can be applied to cover the soil at a distance of about 60cm on both sides of the plant and 15-20cm furrows. Can also be spread in the rows, ploughing, the implementation of the entire garden fertilization.
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