Use aluminum phosphide, a fumigation insecticide. According to the size of the wormhole, insert 1/6, 1/4, 1/3 and 1/2 tablets into the wormhole, and immediately seal the wormhole with soil. The insecticidal effect reached 100%.
Mix 50ml of 50% dichlorvos emulsifiable concentrate or 50ml of 50% parathion emulsifiable concentrate with 2.5kg of water, making medicinal mud with fine loess, and stuffing the medicinal mud into the wormhole with a wooden stick until it stops; The cure rate is as high as 100%. This method has the best control effect on red-necked longicorn beetles, moths and beetles.
According to the color, thickness and wetting degree of insect dung and sawdust discharged from the dung discharge port, determine the moth-eating position, insert the fine iron wire into the moth-eating port, and rotate to assassinate the larvae.
Use 80% dichlorvos 100-200 times solution, or 30% Xiaoling EC 500 times solution or 25% Invesco EC 200-250 times solution, inject the liquid medicine from the moth hole with a large syringe, and seal it with wet mud.