Composition for trapping and killing diaphorina citri kuwayama, and using method and application thereof

The invention discloses a composition for trapping and killing diaphorina citri kuwayama, and a using method and the application thereof. The composition comprises beta-caryophyllene, D-limonene, linalool and the balance of mineral oil, wherein the volume ratio of the beta-caryophyllene to the D-limonene to the linalool is (1-3):(2-3):1, and the content of the beta-caryophyllene is 4.3 to 43 mu L/mL, the content of the D-limonene is 4.3 to 43 mu L/mL and the content of the linalool is 1.4 top 14 mu L/mL. The composition for trapping and killing the diaphorina citri kuwayama provided by the invention has a better trapping effect than that of trapping with yellow sticky cards; the trapping number of the composition can be improved by 25.1 times when the density of the diaphorina citri kuwayama is high (murraya paniculata serves as a host), and the trapping number can also be improved by 20.4 times when the density of the diaphorina citri kuwayama is low (citrus gonggan serves as a host), so that the trapping effect is remarkable. The using method of the composition disclosed by the invention is simple and feasible; compared with the current chemical agent for preventing and controlling the diaphorina citri kuwayama, the composition has the advantages of high efficiency, greenness, environmental friendliness, strong lasting effect and the like, does not have pollution to the environment, and does not have residues.