#$%^&*AU2020102184A420201015.pdf#####ABSTRACT The present invention discloses a method for controlling cicadas to ensure the safety of aeroengine test in the aircraft test field, which comprises the following steps: before the cicada nymphs emerge from the soil in mid-June, applying the insecticides 5 on the ground surface of the base of host plants in an area within 2m from the tree trunk, with 5% chlorpyrifos granules (400g/plant) by soil mixing and spreading or with 40% methidathion suspension (301water/plant) by irrigating root, to kill nymphs in the soil； after application, covering the soil within 2m away from the basic trunk of host plants with netting, and compacting the surrounding area and the place meeting with the base 10 of the tree trunk of netting, to prevent the undead nymphs from coming out from the ground； tying a ring of sticky boards at the height of 0.5m from the base of the tree trunk to prevent cicada nymphs having broken out of netting from climbing up the tree； and during the peak period of cicada nymphs emerging in mid-to-late July, opening the netting and treating again with 5% chlorpyrifos granules (400g/plant) by soil mixing 15 and spreading or with 40% methidathion suspension(301 water/plant) by irrigating root, then covering with netting and replacing the sticky boards on the tree trunk. The method of the present invention is simple and easy to operate, can effectively reduce the harm of cicadas and play a long-term control effect. 40 35 L u30 ~25 E a>； 20 15 - 10 E 5 0 6/29 7/6 7/13 7/20 7/27 8/3 8/10 8/17 8/24 Date
