Grape shoots must be topped

Through topping, it saves a lot of nutrients needed for the growth of new shoots, promotes thickening of leaves, full of flower buds, and fullness of branches. This is crucial for improving the fruit setting rate, yield and quality of grapes.

Topping time. The result is new, usually 3 to 5 days before the flower is topped, and at the beginning of the flowering period. For the varieties with serious falling flowers and falling fruits, such as giant peaks, purple roses and other varieties; can be topped 8 to 10 days before flowering. After the first topping, the leaves do not reach the required number of new shoots. After the secondary shoots are grown, the leaves are left, and the second topping is performed on the secondary shoots. For the vegetative shoots and the cultivated shoots, one time is left. 12 to 15 leaves can be topped. Topping method. When the fruit growers pick the heart of the new shoots, they only go to the top. This kind of picking method does not play a role in extracting. Because the grape leaves grow to 1/3 of the normal leaves, her own carbohydrates produced by photosynthesis are not enough to consume, and the nutrients produced by other leaves are needed to maintain the nutrients needed for continued growth. To supply other organs than this leaf. Therefore, when picking the heart, it should be grasped that the topmost leaves left after picking should be larger than one third of the normal leaves. Thus, after the first topping of several varieties, there may be only 3 to 4 leaves before the inflorescence. Please don't worry about too few blades. The second topping is carried out on the secondary shoots that occur on the new shoots. At this time, the leaves required to be left on the secondary shoots can be topped. In general, each of the resulting new shoots has a total of 12 to 15 leaves.

After mid-July, when the rainfall is sufficient in most areas, the air humidity is relatively high and the temperature is high. At this time, the secondary shoots continue to be produced on the secondary shoots. For these newborn secondary shoots, except for leaving 2 to 3 at the top, and leaving 3 to 5 leaves to pick the heart, all the other parts are removed.

For the lack of frostbite or disease, mechanical damage, and the position of the shelf, no matter the new shoots from the old branches or roots, they should be reasonably reserved. It is especially important to pick these new shoots. If they grow, they tend to grow too strong, full of buds move up, pruning in the next year, and more cuts, without yield. For such new shoots, it should be up to 10 leaves. Take 7 to 8 leaves to pick the heart, forcing it to occur 3 to 5 branches, and picking up the heart when it grows to 10 to 12 leaves to cultivate the result of the leap year.

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