Summary of key techniques for fertilization management of grapevine

Summary: summary of key points of fertilization techniques for grapevines

Different proportions of fertilizers are needed in different periods of grape life. After the weather warms up in spring, the first fertilizer applied is called sprout fertilizer, also known as the first mouthful of grape fertilizer. Nitrogen is the main fertilizer in this period, and this ratio of nitrogen, phosphorus and potassium is the best at 25:5:10. After eating the first mouthful of fat for the grapes, the grapes can grow quickly.

Spring fertilization can also be used to cut the root fertilization method, because after cutting the root, the main root will grow thick, and will grow from the main root many times to take root. In a year, the grape root has two growth peaks. Once between spring and summer, once in autumn. Grape root system has a strong ability of regeneration. After root cutting, grape root system will produce a lot of capillaries. Promote the vitality of root system and lay a good foundation for the robust growth of grapes.

The second fertilization is that the fruit is enlarged and fat. During this period, ordinary farmers mainly applied nitrogen fertilizer to pursue more grape ears, but the scientific and reasonable fertilization method was 40-50kg per mu, and the best formula for nitrogen, phosphorus and potassium ratio was 16:12:18.

The third is coloring fertilizer, which is supplemented with foliar high-phosphorus and high-potassium water-soluble fertilizer or conditional drip irrigation to supplement high-phosphorus and high-potassium water-soluble fertilizer, which is of great help to the color, taste and yield of grapes.

After grape harvest, base fertilizer, also known as Yuezi fertilizer, must be applied in autumn. This month Zi Fat is just like a pregnant woman making a monthly baby. In fact, it is to replenish the grapevines. Although different proportions of fertilizers are applied to the grapes in different growth periods, and the grapes are constantly nourished, the trees that have just picked grapes are like mothers who have given birth to their children. even if there is more nutrition before, the grapes themselves have already consumed a lot, and it is necessary to replenish them at this time. To complete the energy supply of grapes throughout the long winter.

This winter period, also known as storage nutrition, provides a nutrient basis for flower bud differentiation in the second year. This time, many growers do not use Yuezi fertilizer. They feel that a lot of fertilizer has been applied in the previous periods of grapes. There is no need to waste it at this time. In any case, fertilizer should be applied again at the beginning of spring. Most of them are busy pruning and pruning forks after harvest, not applying base fertilizer this autumn.

It would be wrong to change the application of Yuezi fertilizer to the spring of the following year, because only by storing enough nutrients in winter can we ensure an adequate supply of nutrients in the coming year. If this part of the nutrient is not supplied, it will affect fruit setting, so in order to ensure the differentiation of flower buds and produce more fruit with grapes, moon fertilizer must be applied.

It is wrong not to apply Yuezi fertilizer, but it will not work if you can't grasp the time of applying it. When is the best time to apply Yuezi fertilizer? Which formula is the best for Shi Yuezi fertilizer?

If you look at the leaves of the grapes, if the leaves of the grapes are still green, at this time, they can still absorb nutrients. The leaves are the main places for photosynthesis, and the corresponding root system is also very active, which can promote the absorption of nutrients by the roots. Therefore, Yuezi fertilizer must be applied while the grape leaves are still green. It should be mentioned here that many growers cut off the green leaves when applying base fertilizer in autumn, which is wrong.

The application of base fertilizer in autumn must hurt the roots as little as possible, about 40 centimeters away from the roots, and it is best to use high-phosphorus formula plus biological bacterial fertilizer or organic fertilizer, which can not only regulate the soil, but also provide sufficient nutrients for the cell division of roots and branches. The application depth should be less than 25 cm. When applying base fertilizer in the hole conditionally, the upper topsoil and fertilizer are mixed and buried below, and the lower soil is buried on it. The above is the technical summary of the key points of fertilization management of grapevine. I hope it will be helpful to you.

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