小菜蛾仅取食为害十字花科植物.其他非嗜食植物的提取物对小菜蛾可能有好的控制作用.在温室内试验研究了14种常见植物的提取物对小菜蛾雌虫的产卵驱避作用.绝大部分供试植物的提取物可减少小菜蛾的落卵量40%以上,作用最强的是尾叶桉的抽提物,喷施24h后卵降低率达65.52%.植物提取物对小菜蛾雌虫的产卵驱避作用48h后下降,卵减少率最高为飞机草的抽提物,达52.91%.非嗜食植物次生物质在小菜蛾的控制中会有良好的前景. Plutella xylostella only feeding on crucifer plants.Other non-host plant extracts may have good control on the diamondback moth.In an experiment in the greenhouse of 14 kinds of common plant extracts of diamondback moth female spawning Most of the test plant extracts can reduce the amount of egg-shedding more than 40% of the diamondback moth, the strongest effect is the Eucalyptus urophylla extract, after spraying 24h egg reduction rate of 65.52%. The spawning repellent effect on female diamondback moth infestation was decreased after 48 h, and the highest egg reduction rate was 52.91% .And the secondary metabolites of non-viable plant had a good prospect in the control of diamondback moth.