1. Single vine pruning preserves only one main vine and all other side vines are removed. The specific method is to keep the main vine when the main vine is about 50 cm long and remove all side vines. Single vine pruning has few leaves, few female flowers, small selection of fruit set, small fruit shape, usually used in early cultivation in the northern region with short growing period, single vine pruning, usually smaller fruit, fruit setting rate is not high , but mature earlier, suitable for early ripening and dense planting.
2. In addition to the main vine, the double vine pruning leaves one lateral vine in parallel with the main vine, and then removes all side vines. The double-vine vines have more vines, larger leaf area and more female flowers. The main side vines can set fruit and the fruit shape is larger. Precocious cultivation in the South and North is commonly used. When the plant spacing is small and the row spacing is relatively large, the main and lateral vines can grow in the opposite direction. If the plant spacing is large and the row spacing is small, it is appropriate to grow the double vines in the same direction.
3. Sanman pruning means that in addition to retaining the main vines, two lateral vines with robust growth and similar growth potential should be selected in the stem of the main vine. Other lateral vines should be removed. Three vine pruning can be divided into three old vines, two sides pull and other forms. The third old man was selected to leave two robust lateral vines at the base of the plant, extending in the same direction as the main vine; both sides of the vines were the two side vines extending in opposite directions from the main vine.
4.Many vine pruning is the main vine when the 5 to 6 leaves, the main vines are topping, leaving 4 to 5 side vines left after the formation of lateral branches, to the surrounding or both sides of parallel growth, the use of side vine results. The branches of the law are close to each other, and the female flowers appear to have a node and the flowering period is closer, and 3 to 4 melons can be combined at the same time. This method is used when growing strong varieties and rare plants. There is also the last kind of laziness that is allowed to grow during the growth period. Without pruning, labor can be saved. Generally, it is used in varieties that are weak and easy to set fruit. In the cultivation should still control the fertilizer and promote fruit setting.
The severity of the pruning should be based on the specific conditions of the bred variety, growth potential, planting density, and soil fertility.
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