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地老虎俗称土蚕、地蚕,常见的有小地老虎、黄地老虎和大地老虎三种,武安市以小地老虎为主,主要危害各种蔬菜及农作物的幼苗,造成缺苗断垄甚至毁种。近几年其发生呈加重趋势,发生面积不断扩大:2005年全市发生面积5万亩,2006年达8万多亩。发生程度逐年加重:2005年发生较重的2万亩,2006年达到3万亩。虫口密度每平方米达10头以上,最高单穴虫量5头(玉米田)。由于今年春白地面积较常年偏大,春季雨水偏多,春播农作物面积将会比常年大,为地老虎的繁殖提供有利的环境
Commonly known as small tiger, yellow tiger and terrestrial tiger, the main tiger tiger in Wuan City is mainly dominated by small tigers, which mainly endanger the seedlings of various vegetables and crops, resulting in the lack of seedlings to break the ridge or even Destroy species. In recent years, its occurrence has been aggravating the trend, the area has been expanding: in 2005 the city occurred an area of 50000 acres, up to 80000 acres in 2006. The occurrence of aggravating year by year: heavier 20000 acres occurred in 2005, reached 30000 acres in 2006. Insect population density of more than 10 per square meter, the highest single-point wormhole 5 (corn field). Since the area of spring and white this year is larger than that of the normal year, and the rainfall in spring is too much, the area of spring sowing crops will be larger than that of the normal year, which will provide a favorable environment for the breeding of Landrace