How to keep melon when planting watermelon
1. Single vine pruning
That is, only one main vine is kept, and all other side vines are removed. The specific method is to keep the main vine and remove all side vines when the main vine is about 50 cm long. The number of leaves of single vine pruning is small, the number of female flowers is small, the choice of fruit setting is small, and the shape of fruit is small. It is usually used in early maturing cultivation in areas with short growth periods in the north. Single vine pruning is used, usually the fruit is slightly smaller, and the fruit setting rate is not high. , But mature early, suitable for early maturing dense planting cultivation. The advantage is that high-density planting can be carried out, the use of fertilizer and water is more economical, and the weight of watermelon accounts for a high percentage of the weight of all plants; the disadvantage is that it is laborious, the plant has many wounds, is susceptible to diseases, and is easy to form vines.
2. Double vine pruning
In addition to the main vine, one side vine is selected to grow parallel to the main vine at the base, and then all side vines are removed. The double vine has more pruning vines, a larger leaf area, and more female flowers. The main side vines can all be fruited, and the fruit shape is larger. It is widely used in early maturing cultivation in the South and North. When the plant spacing is small and the row spacing is 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 suitable to grow in the same direction with double vines. Using double vine pruning, the number of leaves is larger, the leaf area is larger, the female flowers are more, the main side vine can sit fruit, the fruit shape is larger
3. Three vine pruning
That is, in addition to retaining the main vine, two side vines with strong growth and basically the same growth potential should be selected in the main vine stem, and the other side vines should be removed. The three-vine pruning can be divided into the old three-man, two-sided pull and other forms. Lao Sanman will choose two strong side vines at the base of the plant, which extend in the same direction as the main vine; two-sided pull means that the two side vines extend in opposite directions to the main vine.
The advantages of three-vine pruning are: less labor-intensive management and less plant wounds. Once the main vine is injured or can't sit on the melon, you can choose the vice-mandarin sitting melon; as long as the density is suitable and the effective leaf area is large, the same variety The vine type is more heavy than the single and double vine pruning or single melon, and the weight is higher and the yield is higher.
The disadvantage is that it is not suitable for high-density planting, and the melon matures later. Tri-Pine pruning is a pruning method commonly used in open-field cultivation and late-maturing varieties.
4. Multi-vine pruning
When it is 5-6 leaves of the main vine, top the main vine. After the side branches are formed, choose 4-5 side vines and grow parallel to the surrounding or both sides. Use the results of the side vines. In this method, the branches grow close, the female flowers appear in nodes, and the flowering time is relatively close, and they can bear 3-4 melons at the same time. This method is applied to varieties with strong growth potential and rare plants. There is also the last type of laissez-faire, which is laissez-faire growth during the growth period, without pruning, which can save labor and is generally used on varieties with weak growth and easy fruit setting. Cultivation should still control fertilizer and water, and promote fruit setting.
The weight of pruning should be based on the specific conditions of the cultivar's branching power, growth, planting density, soil fertility, etc .; pruning should be carried out in a timely manner and in stages; after pruning, no more pruning; prevent the spread of diseases during the operation.
The last is watermelon pressure vines. Watermelon pressure vines can prevent the wind from blowing and damaging the vines, which is beneficial to sitting melons and inducing the growth of adventitious roots, making full use of the nutrients in the free soil of the melon field, thereby increasing yield. The method of pressing the vine is to press the vine every 30-40 cm (4-5 knots). When pressing, be sure to correct the vines and arrange them evenly. When encountering female flowers, it is not necessary to leave 1-2 real leaves before and after the female flowers to facilitate fruit setting. When the fruit begins to swell, stop pressing the vine. It is generally pressed 4-5 times during the whole growth period. The time of pressure spread should be controlled after noon. Because the water in the morning is too much and the melons are crisp, the vines are easy to break at this time.
The main and side vines are easy to break when pressing vines. When pressing the vines, both the main and side vines need to be pressed, and the melon vines are tightened to facilitate the smooth flow of nutrients. Pay special attention to the pressure before the melon and light pressure after the melon. If the plant is growing vigorously, it can be pressed and deepened in order to prevent long growth; and the weakened plants can be lightly pressed and shallowed; when the soil moisture is large, the vine can be fixed by inserting vines.
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