菜粉蝶产卵有选择性,如在同一菜圃里栽上各类十字花科蔬菜,常喜产卵于甘蓝类蔬菜上,特别喜欢产卵于结球甘蓝上,优良品种更甚。利用莱粉蝶的这种产卵习性防治菜青虫,具有较高的效果。具体方法是在种植十字花科蔬菜的莱圃里种植小面积的结球甘蓝,以诱集菜粉蝶集中 Cabbage butterfly spawning selective, such as planted in the same vegetable garden all kinds of cruciferous vegetables, often like to lay eggs in cabbage vegetables, especially like to lay eggs in the cabbage, the fine varieties even worse. The use of Clematis butterfly spawning habits cabbage control cabbage, with high results. The specific method is to grow a small area of ​​cabbage in the Lai Pu cultivation of cruciferous vegetables to attract cabbage butterfly concentrate