1. Hazardous characteristics Wheat midge is a devastating pest that uses larvae to enter the wheat glume and sucks the granules that are being grouted, causing pods and empty shells. Occurrence of land parcels is generally reduced by 10% to 20%, and serious land parcels are reduced by 40% to 50%, or even closed. In 2005 and 2006, it took place in our province. Although effective control in 2006, the mouth density of insect worms has declined, but from the survey results of scouring soil during wheat sowing, the density of wheat hoppers in the province is still high, and there is still a threat to wheat production.
2. Occurrence of regular midge occurs one generation a year. The mature larvae enter the soil to the surface of 2 to 20 centimeters in the ground to overwinter overwintering, and in mid-March of the following year the wheat breaks up during the jointing season. In the early wheat booting in April, the larvae that rise to the soil surface begin to phlegm. In mid-season, when the heading of wheat begins, the soil emerges as adults and spawns on the ears of wheat. In early May, the eggs hatch into larvae. The larvae live in wheat husks for 15 to 20 days and are matured within the grains. The development of ages, when the wheat matures, mature larvae into the soil to complete a generation.
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