Winter management of grapes, like most fruit trees, involves fertilization, scraping, winter irrigation, pruning, clearing the garden, and spraying. Among them, the pruning technique is strong and it is a difficult step in the winter management of grapes. Therefore, fruit growers should pay special attention.
For the winter cuts of grapes, they should be classified according to the type of tree to be cultivated, the variety of the grapes, etc. In time, pruning must begin 15 days after the fall, and end before the beginning of spring, generally from mid-December to early February. At this point, the nutrients produced by the pruning blades are returned to the roots through the shoots and stored by the tree for absorption in the following year.
In general, grapevine shears should be classified according to the following conditions: First, pruning of the main and lateral branches. The main and lateral branches were selected according to the spacing of 50-60 cm. The dense branches, diseased branches, immature branches and overlapping branches were all cut off. The branches were retracted when they were too long, so that the main and lateral branches were evenly distributed on the plane. Second, the trimming of the mother branches results. The length of the annual branches should be differentiated according to their dominant bud position, growth potential, and thickness of the branches. The dominant buds are between the third and seventh buds, and 8 to 10 buds need to be trimmed. If the buds are not strong, 10 buds can be left. In terms of the thickness of the cuts, 8 to 10 buds are kept in the strong Wang branches with a shear thickness of 1 cm or more, and 4 to 7 buds are cut in the strong branches with a cut thickness of 0.7 to 1 cm. Leave 2 to 4 buds in the weak branches below 0.6 cm. According to the amount of results to choose to leave the results of the mother branch. With a yield of 8 to 10 kilograms per plant, a single ear weight of 400 to 500 grams is to be measured. Each plant should have 18 to 20 spikes. Usually, 1 to 2 spikes per mother tree result, and 10 to 10 plants per plant. 15 results mother shoots are more appropriate.
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