The apple-winged moth is also called small wing moth, small penetrating feather, and worm. In recent years, it has become commonplace in some places. Almost all apple orchards have occurred and have risen to a major pest.
Occurrence of the law The worm mainly damages the apple, occurs one generation in a year, overwinters under the damaged cortex with 3-4 years of age, and after the fruit tree sprouts the next year, the overwintering larvae begin to move and feed. The larvae mature from late May to early June. Before the encounter, a bit of a circular feathering hole was bitten in the victim's area, but the skin was not bitten. Then the insects and sawdust were stuffed with silkworms to make a long ellipse. The pupal stage was 10-15 days, and feathering began in mid-June. Adult worms take part of the oyster shell out of the eclosion, exposing them to the feathering hole. In late June to late July, it is the eclosion period, the adult is active during the day, spawns 2-3 days after mating, and 1 female lays 20- Twenty-five grains were laid on the rough skin, cracks, and scars of the main trunk and large branches. During spawning, mucus was first discharged to allow the larvae to enter into the cortex after hatching.
Control methods 1. Scrape the scraped bark before sprouting. Observe the cracks in the diseased cive and the large fork, especially the insect dung. After the insects are found, they must be dug to kill. This method is more laborious, but it serves two purposes, killing insects and eliminating pathogens, the effect is also good, can kill most of the larvae.
2. After scraping the skin and before germination, apply a 1:1 mixture of insecticide and waste oil on the trunk 20-30 cm from the ground. In order to increase the amount of osmotic absorption, dead skin can be scraped off at the application site to expose fresh epidermis, but it is best not to hurt the epidermis to prevent burns, and to increase the width of the application appropriately, generally requiring 20-25 cm. Through this measure, you can kill. Dead parts of the larvae remain.
3, spray season spraying, the trunk must be all up and down, north and south of things all spray evenly until the liquid along the trunk down the flow to kill the subcutaneous larvae and new hatching larvae hatching. From June to July, special attention was paid to the prevention and treatment of adult emergence during spraying. Effective pharmaceuticals include organic phosphorus such as roxen and pyrethroid pesticides such as cypermethrin.
4. Zhuang through investment in fertilizer and water, deep plowing to expand holes, reduce load, prevent early defoliation, enhance tree vigor, to reduce rot diseases and cracks, create an environment that is not conducive to pest breeding and invasion. In general, the input of organic fertilizer is not less than 3 cubic meters and the chemical fertilizer is not less than 1,000 yuan (current price). The depth of soil is less than 60 cm. In the situation where there is sufficient fertilizer and water, the yield per mu is controlled within 5,000 kg.
PIV3 Nucleic Acid Test Kit
PIV3 Nucleic Acid Test Kit
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