There will be many small mosquitoes (commonly known as small bites) when the weather is hot. How to prevent it?

Midges are also called small bites, mosquitoes, midges, midges and midges.

Preventive and control measures:

improve the environment

Eliminate and control the breeding and habitat conditions of midges, and fill the potholes within a radius of 500 meters around the lawn in combination with other work; Remove stagnant water and dredge ditches; Block the tree hole; Remove garbage and dirt in time, and adopt mud-sealed compost fermentation treatment; Livestock pens and poultry houses should be cleaned, padded and dismantled frequently, and kept clean and dry, so that midges have no habitat and no breeding ground.

Physical prevention and control

Light is usually used to trap and kill. Trapping mosquitoes with black light, ultraviolet light or blue light, and putting lights around the lawn at dusk to trap and kill them, the effect is good.

Chemical control

Includes the following two aspects:

(1) Killing midges. For breeding places that are difficult to clean for a while, such as sewage pits, ditches, ponds, lotus ponds, swamps, etc., chemical agents can be sprayed regularly to kill midges. The use method is as follows: 50% parathion EC, 50% fenthion EC, 50% malathion EC and 50% phoxim EC. Or 2% fenthion granules or 1% parathion granules, spraying 7.5 ~ 15 kg on the water surface per hectare has a long residual effect on killing midges; For wet and soft ground, 3% malathion powder or 2% fenthion powder can be sprayed at a dose of 30 ~ 50g/m2 to kill midges.

(2) Mosquito control: spray with Dongfanghong-18 ultra-low volume sprayer, and use 50% malathion emulsifiable concentrate, 50% phoxim emulsifiable concentrate and 50% cartap emulsifiable concentrate for 450- 1500 minutes per hectare; Or use 5096 pesticide dichlorvos ultra-low volume preparation, diluted by 2.5 times with kerosene, and kill midges for 450~6000min in a large area per hectare. Spraying 0.5% ~ 1% malathion emulsion 50 ~ 100 m 1/m2 or 1% pest emulsion 50 ~ 100 ml/m2 with a knapsack motor sprayer can quickly kill midges, and the residual period is long. Smoke blowers spray smoke to kill people. In the evening or early morning when there is no wind or the wind speed is below 1 ~ 2m/s, use YW- 14 knapsack smoke sprayer or 3MF-3 knapsack plant protection multipurpose machine to walk slowly with the back machine in the upwind direction of the treatment area and in the direction perpendicular to the wind direction, and spray smoke while walking. Each machine can travel back and forth on a line segment with a width of 20 ~ 30m, and the sprayed insecticidal smoke will spread and cover the road section to be treated. Use 4.5~6.0 liters of 5% dichlorvos diesel liquid per hectare. Or 5% dilution of enemy kerosene, 2 ~ 2.5l per hectare, 30min after spraying, can kill Culex pipiens more than 90%.