大垫尖翅蝗Epacromiuscoerulipes是紫花苜蓿Medicagosativa田的主要害虫。为摸清其发生规律 ,于1999— 2 0 0 2年采取了大田调查与笼内饲养相结合的方法 ,对该虫进行了调查。该虫在鲁北地区紫花苜蓿田1年发生 2代 ,以卵在土中越冬 ,蝗蝻共 5个龄期。并对该虫的年生活史、习性、发生与环境条件的关系进行了叙述 ,提出了防治策略 Epacromiuscoerulipes is a major pest of the alfalfa Medicago sativa field. In order to find out the regularity of its occurrence, a survey was conducted on the insects from 1999 to 2002 through a combination of field surveys and cage rearing. The insects occurred in alfalfa field in Lubei area for 1 year, with 2 generations of eggs in the soil overwintering. There were 5 age groups of locusts. And described the relationship between the pest’s annual life history, habits, occurrence and environmental conditions, and put forward the prevention and treatment strategies