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[目的]有效防治韭菜迟眼蕈蚊,协调物理防治与化学防治。[方法]采用浸虫法和胃毒触杀联合毒力法分别测定臭氧水和农药对韭菜迟眼蕈蚊的作用,并结合以上2种方法测定臭氧水与7种药剂对韭菜迟眼蕈蚊幼虫的联合作用。[结果]用臭氧水处理韭菜迟眼蕈蚊时,从2~10 mg/L,随着臭氧水质量浓度的增大,试虫的校正死亡率逐渐升高。7种药剂对韭菜迟眼蕈蚊24 h的毒力大小顺序为噻虫胺>吡虫啉>噻虫嗪>高效氯氟氰菊酯>辛硫磷>高效氯氰菊酯>毒死蜱。将质量浓度为4 mg/L的臭氧水分别与7种药剂联合处理韭菜迟眼蕈蚊幼虫对比药剂单用处理的结果表明,联合作用中药剂的LC_(50)值分别低于药剂单用。[结论]臭氧水与7种药剂联合使用比单用药剂防治韭菜迟眼蕈蚊效果更好。
[Objective] The effective prevention and treatment of Leek Mycelia, coordination of physical control and chemical control. [Method] The effects of ozone water and pesticide on fungus Myzus fragilis were determined by the method of soaking insects and stomach poisoning combined with virulence, and combined with the above two methods to determine the effect of ozone water and 7 kinds of medicaments on larval The combined effect. [Result] When ozone water was used to treat M. indica, 2 ~ 10 mg / L, the corrected mortality of test insects gradually increased with the increase of ozone water mass concentration. The order of toxicities of 7 kinds of medicaments against Helicoverpa armigera for 24 h was clothianidin> imidacloprid> thiamethoxam> lambda-cyhalothrin> phoxim> cypermethrin> chlorpyrifos. The results showed that LC_ (50) values of the combined effects of the ozone treatment with 4 mg / L ozone and 7 agents alone were lower than those of the single agent alone. [Conclusion] The combined use of ozone water and 7 kinds of medicaments is better than that of single medicament for controlling lettuce and mushroom of leek.