When the grape trees sprout, they need to be properly wiped. The purpose is to reduce the consumption of nutrients, but also effectively improve the fruit set rate. The wiping of buds is usually carried out when the bud eye is 2-4cm long. The thick and large buds are kept, and the weak and small buds are removed. If there are multiple buds in one bud eye, only one is reserved. On the weaker branches, only one bud is left in each node.
When the new buds grow leaves, they will start to shoot. The first shoot was fixed 20 days after the leaves were unfolded, when the new shoots were slightly longer than 10 cm. It is mainly to cut off the weaker new ones, and also to remove the new ones with smaller growth space. The second time the shoot was fixed at 15-20cm, the new one without inflorescence was removed, only the thick branches with inflorescence were preserved.
It can inhibit the growth of the top, promote the differentiation of flower bud and increase the fruit setting rate. The time of picking is related to the thickness of the branches. The thinner branches should be picked early, and a few leaves should be cut, while the thick branches should be picked later. Each fruiting branch can retain one inflorescence, the weaker branch is not suitable for plucking.
When the grape is in bloom, it is necessary to properly disperse the flowers, so as to concentrate the nutrient supply, improve the fruit setting rate and increase the fruit. Flower thinning should be selected according to the strength of the branches. The strong branches should be more sparse, while the weak branches should not have inflorescences. In addition, can also appropriately elongate the inflorescence, so that the fruit is not too crowded.
