近日,山西省永济市蝗区突发2500亩高密度东亚飞蝗,其中伍姓湖内涝蝗区的开张镇农田发生近1000亩,高密度蝗点200余亩,一般密度为500~800头/平方米,最高为1500头/平方米。各虫龄比率为:1龄占15%,2龄占60%,3龄占20%,4龄以上占5%;群居性蝗蝻比例为95%。蒲州河泛蝗区发生地点在韩家庄西河滩农田,发生面积 Recently, an area of ​​2,500 acres of high density East Asian locust suddenly occurred in the locust area of ​​Yongji City, Shanxi Province. Among them, nearly 1,000 acres of farmland were opened in Wuzhong Lake locust area and more than 200 acres of high-density locust locusts with a typical density of 500 to 800 / Sq m, up to 1500 / sq m. The ratio of each worm age was: 15% for age 1, 60% for age 2, 20% for age 3 and 5% for age 4 or above. The percentage of locusts was 95%. Puzhou River Pan Locust occurred in Hanjiazhuang Xihe Beach farmland, occurred area