First, the harm symptoms The pest is harmful to corn leaves, stamens, and the ear. When the leaves are damaged, the leaves are eaten, only the epidermis is left, large transparent white spots appear on the surface of the damaged corn leaves, which seriously affects photosynthesis; harm the stamens and ears of corn, often bite Stamens, stamens, and ears affect the integrity of corn pollination. The loss of corn production is generally about 15%. Second, the harm time The pests are mainly adults and nymphs in July-August (early heading and flowering period of maize), and they are the peak of feeding hazard after 10:00 am and 5:00 pm. Third, prevention and control technology 1. Agricultural control Timely eradication of weeds at the edge of the fields, mantles and canals, and deep-falling eggs in autumn can reduce pests. 2, chemical prevention 1 Spray 5,000-fold with pyrethroids (cypermethrin, cypermethrin, cyhalothrin, etc.). 2 Spray 1500 times with 45% Chlorpyrifos EC to simultaneously treat armyworm, corn borer, thrips, and chafers. Prevention time is better after 5 pm and 10 am. Portable 3 Ply Disposable Masks Non-woven Face Mask With Elastic Earloops Disposable Surgical Face Mask Dongguan Anmeixuan Electronic Technology Co., Ltd , https://www.hyashine.com