Control of wheat midge

Wheat midge is a devastating pest in wheat production. The larvae damage the wheat flower and the milky kernel, and suck the slurry, causing the grain to be reduced. The lighter production will be reduced by 10% to 20%, and the heavy ones will be reduced by more than 50%.

First, prevention and control during the flood season. The control period of the flood season in Central and South China is from April 20 to 25. In the appropriate period of prevention and control, it is recommended to use 2.5% or 3% methyl isoflavone powder 2 kg per mu or 5% chlorpyrifos granules 1 to 1.5 kg per mu, mixed with fine sand 30 to 50 kg, mixed evenly, formulated into toxic soil After that, it is evenly spread on the wheat field, timely watering is used to improve the control effect, and the unified control effect of the square piece is the best.

Second, adult prevention and control. In early May, 80% of wheat heading was the best control period for adults before the flowering. Due to different conditions such as wheat varieties and watering time, there are differences in the period of heading and flowering. Pay attention to the early control of early heading. 800-1000 times of beta-cyhalothrin, beta-cypermethrin, etc., spray control after 3 pm.

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