Gift watermelon is of good quality, high sugar content, ants like to eat, and some of the fields are heavy. Ants that endanger the gifts of watermelon are mainly yellow ants, because they burrow underground, the number of groups is large, and the hazards are hidden and rapid. Attention should be paid to strengthening prevention and control.
The yellow ants endangered the gift of watermelon mainly in three periods: First, in the watermelon seedling period and extension period of grazing melon seedling roots and stem base of the epidermis, the formation of circumcision, destruction of the transmitting tissue, so that the wilting and wilting die; Second, in the Watermelon feeding pollen and nectar, resulting in a serious shortage of watermelon pollen, affecting artificial pollination or bee pollination, thereby affecting sitting melon; the third is during the expansion of the melon eating melon, smoking sap, resulting in decreased appearance or infection of watermelon quality The rot of the disease seriously affects the yield.
Plowing before winter, often cultivating yellow ants nesting in the ground, the tunnel lead in all directions, deep-frozen soil in winter before freezing, can damage the ants and tunnels, frozen part of the ants. In the watermelon extension period of appropriate cultivating several times, can effectively cut the ants walking tunnel, reduce the degree of harm.
Reasonable irrigation, control weeds and watermelon live to extend the vine, increase the amount of irrigation without affecting the growth, keep the soil moist. Irrigation and ditching irrigation around melons can prevent yellow ants from harming to a certain extent, but irrigation time should not be too long, so as not to affect the growth of watermelons. Ditching the fields often to remove dead leaves and leaves, keep the melon garden clean, can effectively reduce the amount of ants to build a nest.
Reasonable rotation and intercropping can be carried out in places where there are conditions, and dry and wet crop rotation can be carried out. After the deep-frozen pods are planted, watermelons are planted to reduce the number of yellow ants. Onions, garlic, coriander, celery and other vegetables have repellent effects on yellow ants, and watermelons interplant yellow ants would not dare to harm.
Reasonable fertilization yellow ants are easily attracted by food and various pollutants. The base fertilizer such as cake fat and other organic fertilizers must be fully decomposed and applied in a centralized manner to prevent yellow ants from feeding and reduce the number of yellow ants.
Poison bait or sweets trapping and killing Select baits that have good palatability and have no repellent effect on ants. Place them near the ant nest. The bait is fed by the worker ants or dragged to the ant nest, effectively killing worker ants, ant kings, and queen ants. Young ant to reach the entire nest to destroy. Commonly used poison bait method: take a mixture of high concentration of trichlorfon and white sugar, put the sauteed cakes or fresh beef, sheep, and chicken bones into the soak for 1 hour, or use yellow ants to eat. The characteristics of sweets, using honey and wheat bran made of ball-shaped bait to trap ants, and then use 80% dichlorvos EC 1000 times liquid spray extermination.
Before and after cultivating, 2 kg of 5% trichlorfon powder shall be applied to the field per acre to reduce the damage of yellow ants and other underground pests. Watermelon seedling stage can use 90% crystal dipterex 1000 times or 80% dichlorvos EC 800 times to root 2 or 3 times to quickly kill ants. Watermelon flowering and sitting period with 80% of dichlorvos EC or 48% chlorpyrifos EC 1000 times spray control.
The yellow ants endangered the gift of watermelon mainly in three periods: First, in the watermelon seedling period and extension period of grazing melon seedling roots and stem base of the epidermis, the formation of circumcision, destruction of the transmitting tissue, so that the wilting and wilting die; Second, in the Watermelon feeding pollen and nectar, resulting in a serious shortage of watermelon pollen, affecting artificial pollination or bee pollination, thereby affecting sitting melon; the third is during the expansion of the melon eating melon, smoking sap, resulting in decreased appearance or infection of watermelon quality The rot of the disease seriously affects the yield.
Plowing before winter, often cultivating yellow ants nesting in the ground, the tunnel lead in all directions, deep-frozen soil in winter before freezing, can damage the ants and tunnels, frozen part of the ants. In the watermelon extension period of appropriate cultivating several times, can effectively cut the ants walking tunnel, reduce the degree of harm.
Reasonable irrigation, control weeds and watermelon live to extend the vine, increase the amount of irrigation without affecting the growth, keep the soil moist. Irrigation and ditching irrigation around melons can prevent yellow ants from harming to a certain extent, but irrigation time should not be too long, so as not to affect the growth of watermelons. Ditching the fields often to remove dead leaves and leaves, keep the melon garden clean, can effectively reduce the amount of ants to build a nest.
Reasonable rotation and intercropping can be carried out in places where there are conditions, and dry and wet crop rotation can be carried out. After the deep-frozen pods are planted, watermelons are planted to reduce the number of yellow ants. Onions, garlic, coriander, celery and other vegetables have repellent effects on yellow ants, and watermelons interplant yellow ants would not dare to harm.
Reasonable fertilization yellow ants are easily attracted by food and various pollutants. The base fertilizer such as cake fat and other organic fertilizers must be fully decomposed and applied in a centralized manner to prevent yellow ants from feeding and reduce the number of yellow ants.
Poison bait or sweets trapping and killing Select baits that have good palatability and have no repellent effect on ants. Place them near the ant nest. The bait is fed by the worker ants or dragged to the ant nest, effectively killing worker ants, ant kings, and queen ants. Young ant to reach the entire nest to destroy. Commonly used poison bait method: take a mixture of high concentration of trichlorfon and white sugar, put the sauteed cakes or fresh beef, sheep, and chicken bones into the soak for 1 hour, or use yellow ants to eat. The characteristics of sweets, using honey and wheat bran made of ball-shaped bait to trap ants, and then use 80% dichlorvos EC 1000 times liquid spray extermination.
Before and after cultivating, 2 kg of 5% trichlorfon powder shall be applied to the field per acre to reduce the damage of yellow ants and other underground pests. Watermelon seedling stage can use 90% crystal dipterex 1000 times or 80% dichlorvos EC 800 times to root 2 or 3 times to quickly kill ants. Watermelon flowering and sitting period with 80% of dichlorvos EC or 48% chlorpyrifos EC 1000 times spray control.
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