Finishing of watermelon side vines
Watermelon twigs grow vigorously and their branching force is strong, so pruning must be done during the watermelon extension period. This will not only allow good ventilation between plants, increase light, regulate plant growth, but also reduce pests and diseases and promote early satiety. The number of pruning vines should be determined according to the selected species, planting density, climatic conditions and soil fertility. The three methods of single vine pruning, double vine pruning and triple vine pruning are commonly used in production.
Single vine pruning plants less female flowers. There is limited room for the selection of fruit-bearing parts. Usually, only single-vine twigs are used for cultivation in greenhouses or for farming, and other watermelon fields are rarely used.
There are two methods of double-vine pruning: one is to choose to leave a strong lateral vine at the base of the plant, except for the main vine, and remove all the other side vines on the main vine. The distance between the main vine and the side vine It is 30-40 centimeters. There are more leaves and female flowers in double-vine pruning, and the fruit setting rate is higher; in the other method, after the main vine has picked up the heart, two strong lateral vines are selected to remain in parallel at the base of the plant, and the remaining vines are all removed. Double vine pruning is widely used in early watermelon varieties.
The so-called triple vine pruning is based on the retention of the main vine, and then selects to leave two coarse-grained side vines, and the other side branches are immediately removed. Excess side vines do not manage to be as robust as possible. They should not be removed early. Otherwise, they will not only consume nutrients but also affect the growth of cucumis and melon seedlings.
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