1. Artificially-assisted pollination: artificially assisted pollination by watermelon can increase the rate of sitting cucumbers to 80-90% and increase production by 10-15%. The method is: When the male and female flowers of watermelon are open (from 6 am to 9 am), remove the male flowers, peel off the petals, and gently apply the pollen to the stigma of the female flowers. Apply 3-4 female flowers per male flower. Pay attention to the action when light, the hand can not touch the ovary, so as to avoid the effect of mechanical damage on the melon. Use a loose brush to scoop the pollen on the open male flower and gently apply it to the stigma of the female flower.
2, stalks: As the saying goes "back cough, before the end of the melon." When a young melon is formed, the stalks on the back of the squash on the back of the vine with fingers hard to hear, can hear "cough" can be heard, so young Melons can sit in all directions.
3, point quinone acetic acid: first weighed 1 gram acetic acid, dissolved with 30 grams of alcohol, then add 24 kilograms of water, dubbed the concentration of 4010-6, with a clean brush or a small sprayer, dip or spray in a walnut-like size The young cucumis should be moistened or wetted. This will allow the young larvae not to fall off and stimulate the larval cell division and promote watermelon growth. If foliar spray is applied when the female flower is not open, there is also the effect of accelerating the differentiation of the female flower and forming the young melon early.
4. Spraying cytokinin: Spraying cytokinin at the flowering stage of watermelon can increase the fruit set rate of watermelon by 20%, increase the sugar content by 1.5-2 degrees, increase the yield by 27-30%, and reduce disease and promote premature maturity. And so on. The method is: in late May or early June, when the quail has 5-8 vines, the cytokinin is sprayed at a concentration of 500 times, so that the buds can be concentrated and then sprayed once every 5 days or so. , You can spray 4 times, the last time should be around June 20.
5. Spraying gibberellin: When the watermelon grows to the size of a walnut, spraying gibberellic acid from 2010-6 to 3010-6 has a significant effect on improving the rate of watermelon sitting.
6, spray vinegar: When the watermelon has 1-2 true leaves and before flowering and flowering, each spraying a 500 times liquid vinegar, compared with the early spraying of watermelon mature 5-6 days, The rate of sitting is high and the size of melons is large. The output can be increased by 30-35%.
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