Second, the morphological characteristics Adult body length 40 ~ 46 mm, body and wings are yellow brown, head, chest is dark purple. The forewings are narrow and long with 6 dark wavy stripes. The hind wings are small, dark brown, with a yellow-brown ribbon on the outer edge of the fin base. Larvae are about 90 mm in length and greenish yellow.
Third, the occurrence of law pod moth every year 1 to 2 generations. The mature larvae in the soil in the depths of 9 to 12 cm over the winter, the following spring when the larvae to the surface of the larvae. In late June, adults were seen. Adults were hidden in crops and weeds during the day and were easy to catch. Adults fly strong, migration, and have a strong tendency towards black light. Adults begin to move in the evening, and the larvae lurk their dorsal leaves during the day and feed at night, damaging soybeans on a cloudy day.
Fourth, control methods (-) agricultural measures. Plowing in autumn to eliminate overwhelming insect sources.
(b) Blacklight trapping of adult worms.
(c) Chemical control. In the larvae 1 to 3 years of age, 100 to 5 to 10 insects can be used to prevent and treat chemicals. Drugs can be used 90% of the crystal trichlorfon 700 ~ 1000 times, 2% of carbaryl wettable powder, 2.5% of deltamethrin EC 2000 times and so on.
(d) Biological control. With acaricidal 500 to 700 times liquid spray, with 50 kg per mu.
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