Answer: Grapevine winter crops grown in greenhouses should be completely deep- dormant after deciduous vines, usually from mid-December to the end of December. According to the different types of cultivation, the specific characteristics of the varieties and the vigor of the tree potential determine the specific method of pruning. Greenhouses generally use hedgerows, V-shaped racks and small scaffolds. When the hedge trimmer is selected, the results will be selected to stay in the direction of the parent vines, and the V-shaped frame results in the selection and retention of the parent vines on both sides. The small shed should be used to ensure that the plant distance is relatively high. The rod shaping method directly selects and retains the resulting mother branch on the main vine. Pruning according to the variety characteristics, pruning of purple crisp, early red, summer solstice and other varieties should be used in the middle long tip scissors, the result of golden mean mother leaves 4 to 6 buds short cut. As a result, the mother leaves 6 to 8 buds. Amount of bud left 7000 ~ 8000, in order to prepare after the spike can be identified when the flower spike adjustment.
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