Wheat midge is a devastating pest. It uses larvae to lurk in the husk of wheat to suck the sap of granules that are being grouted. As a result, the wheat grain is dried up or moldy, which generally can cause wheat production to decrease by more than 20-30%, and it can even cause serious crop failure. According to this year's station spring scouring survey, this year's county has an area of ​​16.8 million mu of midge pests, covering 127 villages in 8 towns and towns. The average number of square insects per species is 2.47, and the highest is 27, reaching 12.1 million mu of control indicators. The degree of emphasis.
Control methods:
1. Prevention and control in flood season: In the booting stage of wheat, 2.5% methyl isofluosad powder is used per mu, 2 kg, and 20-25 kg of wet fine soil is mixed with toxic soil. Repeatedly stirring with iron shovel, evenly spread on wheat ridge. Ground surface of wheat field, timely watering after spreading, to ensure control effect, can use branches, brooms, etc. to promptly drop the toxic soil on the wheat leaf, pay attention to the application time should be selected when no wind or breeze, no dew .
2. Adult stage prevention and control: Before wheat heading 70% to Yanghua, use 4.5% beta cypermethrin EC or 2.5% deltamethrin EC or 30% oleic infant EC 60 ml and water 30 kg at 5 pm After the spray control, medication should pay attention to turn down the buckle, hit even hit through, re-injection area once every 2-3 days, spray 2-3 times.
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Fertilizer pump mounted directly on the pipe, the kinetic energy of pipe flow to drives the pump to work at a set ratio to suck high erconcentration drug or quantitative fertilizer in to the pump. After mixed with the water and delivered to downstream. No matter How to change the water pressure, Drug or fertilizer will be mixed and discharged according to a certain proportion.
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