How to prevent watermelon deformed hollow
2020-03-16 14:17:17
The watermelons grown by some farmers have grown out of shape and hollowed out. They think that there is a problem with the watermelon seeds and they have to make claims to the dealers, but in fact the problem is not here.
One of the malformation occurs because the watermelon plant body is malnourished, and the plants grow weak; the second is that the flowers pollinate badly in rainy weather; the third is the prolonged growth of the watermelon, lack of stamina, and fruiting and late; and the fourth is the low temperature period. Malformed flowers, when the temperature turns into normal, the fruit is easy to become deformed; five is the lack of potassium; six is ​​the fruit of the low-node female flowers, easy to form flat fruit in the case of swelling during the expansion; seven is a long fruit-shaped Varieties, in the fruit development period, the fertilizer and water are not easy to grow into sharp-nosed fruit; the fruit-growing position is easy to grow gourd fruit.
The occurrence of empty fruit is due to the following reasons: too much irrigation during fruit ripening; low fruit setting and low temperature in the early fruit-expansion period; nutrient deficiency; fruit internal nutrient distribution is not balanced, and fruit enlargement period is prolonged.
To improve the quality of watermelons, the following measures should be taken:
Improved fertilization technology. Increase the application of organic fertilizers, especially refined organic fertilizers, biological compound fertilizers or high-content ternary compound fertilizers and potassium sulfate compound fertilizers. Can also be directly applied with phosphorus, potassium, calcium fertilizer. Avoid partial application of nitrogen fertilizer to prevent premature madness in the late progeria. At the same time, pay attention to the use of water to adjust fertilizer and reasonably water it.
Increase insulation effect. In addition to greenhouse cultivation, Daejeon’s open field cultivation should promote mulching, and it is best to use double-film cultivation to create a heat preservation environment to ensure sufficient accumulated temperature during the results and during the expansion period.
Control the fruit setting area. Individual watermelon can open dozens of female flowers, but only need to choose to leave one or two watermelons. Fruit placement has great influence on fruit size, appearance shape and quality. Generally, only 2nd to 3rd female flowers are left on the main vine. The fruit of the knot.
Artificially assisted pollination. In order to avoid adverse weather affecting the normal pollination of watermelon, it is necessary to collect robust male flowers in the absence of rain and strip the buds indoors. After the pollen is opened, the 2nd to 3rd well-developed female flowers on the main stem are selected to be pollinated. Each male flower can be given 1 to 2 female flowers to improve the fruit set rate of the high-quality watermelon, and at the same time, it is necessary to timely remove the deformed young. fruit.
One of the malformation occurs because the watermelon plant body is malnourished, and the plants grow weak; the second is that the flowers pollinate badly in rainy weather; the third is the prolonged growth of the watermelon, lack of stamina, and fruiting and late; and the fourth is the low temperature period. Malformed flowers, when the temperature turns into normal, the fruit is easy to become deformed; five is the lack of potassium; six is ​​the fruit of the low-node female flowers, easy to form flat fruit in the case of swelling during the expansion; seven is a long fruit-shaped Varieties, in the fruit development period, the fertilizer and water are not easy to grow into sharp-nosed fruit; the fruit-growing position is easy to grow gourd fruit.
The occurrence of empty fruit is due to the following reasons: too much irrigation during fruit ripening; low fruit setting and low temperature in the early fruit-expansion period; nutrient deficiency; fruit internal nutrient distribution is not balanced, and fruit enlargement period is prolonged.
To improve the quality of watermelons, the following measures should be taken:
Improved fertilization technology. Increase the application of organic fertilizers, especially refined organic fertilizers, biological compound fertilizers or high-content ternary compound fertilizers and potassium sulfate compound fertilizers. Can also be directly applied with phosphorus, potassium, calcium fertilizer. Avoid partial application of nitrogen fertilizer to prevent premature madness in the late progeria. At the same time, pay attention to the use of water to adjust fertilizer and reasonably water it.
Increase insulation effect. In addition to greenhouse cultivation, Daejeon’s open field cultivation should promote mulching, and it is best to use double-film cultivation to create a heat preservation environment to ensure sufficient accumulated temperature during the results and during the expansion period.
Control the fruit setting area. Individual watermelon can open dozens of female flowers, but only need to choose to leave one or two watermelons. Fruit placement has great influence on fruit size, appearance shape and quality. Generally, only 2nd to 3rd female flowers are left on the main vine. The fruit of the knot.
Artificially assisted pollination. In order to avoid adverse weather affecting the normal pollination of watermelon, it is necessary to collect robust male flowers in the absence of rain and strip the buds indoors. After the pollen is opened, the 2nd to 3rd well-developed female flowers on the main stem are selected to be pollinated. Each male flower can be given 1 to 2 female flowers to improve the fruit set rate of the high-quality watermelon, and at the same time, it is necessary to timely remove the deformed young. fruit.
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