地处我市南部的衡水湖,总面积5.6万亩。由于1992—1993年遇到近百年未有的持续干旱,湖区干涸,导致了蝗虫的大发生。据调查,发生面积4.2万亩,蝗虫种类为东亚飞蝗,虫蝻大部分1—3龄,密度一般每平方米6000—11000头,少则3000头左右,蝗蝻聚集区高达19000头,密度之大是近二十年来未有的。 Located in the southern city of Hengshui Lake, with a total area of ​​56,000 mu. Due to the continuous drought that lasted nearly one hundred years from 1992 to 1993, the lake area dried up, causing the locust to occur. According to the survey, an area of ​​42000 acres, the locust species of Locusta migratoria, worm most 1-3 years old, the density generally 6000-11000 per square meter, at least about 3000, the locust gathering area up to 19000, density Big things have not been in the last two decades.