Huang Shougua can also be called firefly, which is one of the three kinds of melons in China (yellow-footed yellow squash, yellow-footed black squash, black-footed black squash), mainly distributed in Henan, Shaanxi, East China, South China, Southwest China and other places. The melons and vegetables that are affected include two melons, pumpkins, melons, and cucumbers. They also harm the cruciferae, Solanaceae, legumes, sunflowers, oranges, peaches, pears, apples, hackberries, and mulberry trees. Briefly talk about the hazard characteristics and control measures of melon vegetables.
First, the harmful characteristics of melon vegetables
(1) Huang Shou melon mainly harms the leaves, tender stems, flowers and fruits of the melon seedlings. When feeding the leaves, the body is centered, the body rotates and eats a circle, forming a ring or semi-circular food mark or circle on the leaves. Hole.
(2) The larvae endanger the roots of vegetable plants, and between the xylem and the phloem, the underground part is wilted and killed.
Second, the prevention and treatment measures of melon vegetables
(1) While the melons are covered with gauze after emergence, the early spring vegetables such as leeks, sunflowers, and leeks can be spread around the vegetable plants.
(2) At the same time as uncovering the gauze and introducing the vines, first remove some of the early spring vegetables near the melon seedlings, then sprinkle a layer of 1cm thick grass ash or rice husks or sawdust to prevent adult worms from laying eggs and The larva damages the roots of the melon seedlings.
(3) Cut a 50-60cm long, 30-40cm wide square screen window cloth, and fill it into a cylinder with a height of 30-40cm and a diameter of 15-18cm. After the seedlings are unearthed for 1-2 days, cover the seedlings with a screen cloth cylinder. A serious hazard period.
(4) Melon vegetables are weak in resistance at the seedling stage and should be used with caution.
(5) In the period of adult occurrence of Huangshou melon, use 1500-3000 times solution of 10% cypermethrin emulsifiable concentrate, or 1000 times solution of 10% cypermethrin emulsifiable concentrate, or 2000 times solution of 20% fenvalerate emulsifiable concentrate, or 2000 times of 10% cypermethrin emulsifiable concentrate. Liquid spray control.
(6) During the larval stage of Huangshougua, it can be treated with 90% trichlorfon emulsifiable concentrate l500 times solution or 50% phoxim emulsifiable concentrate 2500 times solution.
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