First, cut off the diffusion path to build a new greenhouse, tea yellow cockroaches always invade from the surrounding weeds into the shed, therefore, it is necessary to timely remove the weeds around the shed and the shed, and spray the killing on the back slope with poor ventilation and humidity. Agent. After the vegetables are harvested, the litter is removed in time and burned intensively. At the same time, deep-plow the cultivated land, do not apply unfertilized organic fertilizer, and avoid bringing insects from other greenhouses.
Second, ecological control According to the requirements of temperature and humidity for the growth and development of sassafras, combined with greenhouse management for large temperature difference treatment, that is, the shed temperature is raised to 34 ° C ~ 35 ° C during the day and maintained for 2 to 3 hours, the night temperature is reduced to 11 °C ~ 12 °C. According to the survey, when the indoor temperature reaches 35 °C, the hatching rate of eggs is significantly reduced, and the mortality rate of adult mites is significantly improved; the room temperature of 34 °C ~ 35 °C lasts for 2 to 3 hours, and the mortality rate of cockroaches can reach 80%. 60%.
Third, the chemical prevention and control Strengthen the inspection, early detection, timely prevention and control, that is, the use of acaricide in the initial stage of prevention and control. The first choice is to use biological agents, followed by high-efficiency, low-toxic, low-residue chemical pesticides, and strictly control the safety interval. Spray with 1.8% Qiqisu emulsifiable concentrate 3000 times, safe interval of 7-10 days; spray with 20% compound Liuyangmycin emulsifiable concentrate 1000 times, safe interval of 7 days; use 15% ketone ketone 2000 Double spray, safe interval of 40 days; spray with 5% Nissolan EC 1500 times, the safety interval is 60 days.
Second, ecological control According to the requirements of temperature and humidity for the growth and development of sassafras, combined with greenhouse management for large temperature difference treatment, that is, the shed temperature is raised to 34 ° C ~ 35 ° C during the day and maintained for 2 to 3 hours, the night temperature is reduced to 11 °C ~ 12 °C. According to the survey, when the indoor temperature reaches 35 °C, the hatching rate of eggs is significantly reduced, and the mortality rate of adult mites is significantly improved; the room temperature of 34 °C ~ 35 °C lasts for 2 to 3 hours, and the mortality rate of cockroaches can reach 80%. 60%.
Third, the chemical prevention and control Strengthen the inspection, early detection, timely prevention and control, that is, the use of acaricide in the initial stage of prevention and control. The first choice is to use biological agents, followed by high-efficiency, low-toxic, low-residue chemical pesticides, and strictly control the safety interval. Spray with 1.8% Qiqisu emulsifiable concentrate 3000 times, safe interval of 7-10 days; spray with 20% compound Liuyangmycin emulsifiable concentrate 1000 times, safe interval of 7 days; use 15% ketone ketone 2000 Double spray, safe interval of 40 days; spray with 5% Nissolan EC 1500 times, the safety interval is 60 days.
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