东亚飞蝗(Locusta migratoria manilensis Mey.)是我国历史上的一大社会性害虫,它具有散居型、群居型和中间型三种型态,各型之间可随密度的增减互相转变,为了探讨蝗蝻密度与型变的关系,总结出随密度变化而出现不同生态型的规律,为大面积蝗区治理提供依据,特开展了本研究.一、研究方法(一)饲养。在黄骅沿海蝗区的苇洼地采用底面积为1平方米、高0.8米的木质尼龙纱 Locusta migratoria manilensis Mey. Is a social pest in the history of our country. It has three types of diaspora, colony and intermediate types. Each type can change with the increase or decrease of density. In order to Discuss the relationship between the density of locusts and the type change, sum up the law of different ecotypes with the change of density, and provide the basis for the management of large area locust area, especially carry out this research. Huanghua coastal grasshopper reed depression using the bottom area of ​​1 square meters, 0.8 meters high wood nylon yarn