华北蝼蛄(Gryllotalpa unispina Saussure)是河南省农业主要地下害虫,在60年代初,每年发生面积近5,000万亩,一亩最多有蝼蛄3,774头,最少273头,平均1,234头,一般地块被害缺苗断行10—20％,重者30—50％,更甚者达70％以上,以致绝苗改种。过去我们对华北蝼蛄的生活史进行了饲养观察和研究,现分述如下: Gryllotalpa unispina Saussure is the major pest of agriculture in Henan Province. In the early 1960s, the annual area of ​​nearly 5,000 million mu was 3,774 heads per mu, with a minimum of 273 heads, an average of 1,234 heads. Break 10-20%, weight 30-50%, more than 70% or more, resulting in seedling replanting. In the past, we conducted a rearing observation and study on the life history of the Northern Han Dynasty, and are as follows: