Wheat midge is a devastating pest, and its harm is to absorb the wheat slurry, causing the grain to become thin and even become empty shell. Although the population density of red-sucking insects of wheat is slightly lower than that of last year, individual plots still appear to be heavier. If they are not promptly organized and eliminated, they will inevitably result in severe reductions in production. To do this, we must seize the best period for the current prevention and control of midge insects. Actively organize governance.
Prevention index: 2 heads/sample (10*10*20cm)
The appropriate method of prevention and cure:
1. Flood season: Due to the fact that the temperature in spring this year is lower than usual, the prevention and treatment of the disease is predicted to be delayed 5-10 days in the short-term than in normal years. It is April 25-30, and the use of drugs for prevention and treatment is 5% chlorpyrifos powder, 600-1200 grams per mu or 5% of Toxic granules dosage of 800-1600 grams of granules, 25 kg against fine sand, uniform measures, watering after spreading.
2. Adults: In the short-term prevention and control period, the heading rate among wheat fields reached about 70% (May 5-15), and the adult insecticides were used as imidacloprid and high-chlorine pesticides.
Notes: 1. Toxic soil should be used now. 2, the preparation of medicine soil should be selected sunny and windless weather, time mastered after 10 o'clock in the morning. 3, the application of pesticide soil should be selected sunny and windless weather, time mastered after 10 o'clock in the morning. 4, after spraying the soil, it is necessary to water immediately, can improve control efficiency.
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