在田间测定了大蒜、薄荷、紫娇花等7种非寄主植物对蚜虫、小菜蛾和菜青虫3种甘蓝主要害虫的有效驱避距离及其消长动态的影响。结果表明，在甘蓝大棚入口处种植大蒜、薄荷后，甘蓝上蚜虫发生量分别减少了58.35％和56.17％，小菜蛾发生量分别减少了52.04％和40.52％；种植大蒜和紫娇花后，菜青虫发生量分别减少了55.36％和41.52％。大蒜对菜青虫的有效驱避距离为3.0 m，对甘蓝上蚜虫为1.0 m，对小菜蛾为0.5 m；薄荷对甘蓝上蚜虫的有效驱避距离为3.0 m，对菜青虫为1.0 m，对小菜蛾驱避效果不显著；其他处理对3种害虫的有效驱避距离均在0.5 m以下。总体驱避效果为：大蒜＞薄荷＞狭叶薰衣草、迷迭香、碰碰香、鼠尾草、紫娇花。%The repellent ability of 7 non-host plants such as Alliaceae sativum L. , Mentha haplocalyx Briq. and Tul⁃baghia violacea Harv. to 3 main cabbage insect pests such as aphid, Plutella xylostella and Pieris rapae, as well as the influence of interplanted with non-host plants on the population dynamics of the 3 pests were conducted in green-house. The results indicated that the amount of aphid were decreased by 58. 35% and 56. 17%, and the amount of Plutella xylostella were decreased by 52. 04% and 40. 52%, respectively, when A. sativum L. and M. haplocalyx Briq. were planted at the entrance of the cabbage greenhouse. Meanwhile, the amount of Pieris rapae were decreases by 55. 36% and 41. 52% in cabbage interplanted with A. sativum L. and T. violacea Harv, respectively. It also in-dicated that the effective repellent distances of A. sativum L. on Pieris rapae, aphid and Plutella xylostella were 3. 0, 1. 0 and 0. 5 m, respectively, which of M. haplocalyx Briq. on aphid and Pieris rapae were 3. 0 m and 1. 0 m, but showed no significant effect on Plutella xylostella. The effective repellent distances of other plants on the 3 main cab-bage pests were less than 0. 5 m. The repellent ability in general showed as A. sativum L. >M. haplocalyx Briq. >L. angustifolia Mill. , R. officinalis L. , Plectranthus hadiensis var. tomentosus( Benth. ex E. Mey. ) Codd, S. japon⁃ica Thunb. , T. violacea.
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