Peach small heartworm, referred to as peach small, is an important fruit pest, mainly for apricots, jujubes and other fruits. The larvae feed on the fruit, and the feces are discharged into the fruit. When the damage is serious, the “bean paste†is formed, and the edible value is lost. .
The mature larvae are about 12 mm long and have a pink body. In winter, they overwinter in the soil. After May, they emerge from the soil and emerge from the soil. They lay eggs on the fruit surface and the larvae in June are harmful.
According to the occurrence law and living habits of the insect, the control measures combining ground control and spraying on the tree should be adopted, and the necessary artificial control is also effective.
Ground control The wintering larvae were unearthed at the beginning of the period (about mid-May), sprayed with 32% phoxim microcapsules at a rate of 0.5 kg per acre of water 100 times in the tree tray and around, or sprayed with white fungus liquid on the tree tray. Remove the weeds from the tree tray before applying the pesticide and level the land.
When spraying the pest surface on the tree to start spawning, timely spraying and controlling. Use 4.5% beta-cypermethrin 1500 times solution or 2.5% cyfluthrin 6000 times solution. Spray 20 times every 20 days.
Other measures Before the larvae are removed from the fruit, the insects are removed in time and concentrated deep, which can alleviate the second generation larvae. Apple can combine fruit thinning and fruit bagging to prevent insects.
The winter insects combined with the autumn application base fertilizer, the 10 cm deep topsoil of the tree tray is filled into the bottom layer of the fertilization below 30 cm deep, and the subsoil is re-attached thereon to eliminate the larvae that overwinter in the soil surface.
(Huang Jun)
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