地下害虫是我国主要的害虫,发生普遍,种类很多,其中最主要的为螻蛄,金针虫,蛴螬和地老虎四类,其他如土壤根蛆,拟地(虫甲),根椿象等,亦常在局部地区发生严重。地下害虫一般为害植物的根、茎部,是造成缺苗断垅的主要原因,严重受害时需补种多次。被害的作物很多如小麦、玉米、高粱、粟、薯类、棉、麻、甜菜、甘蔗、蔬菜及树木幼苗等。几种地下害虫常在同一地区内同时发生为害。地下害虫的主要种类螻蛄:属于直翅目螻蛄科,在我国发生有 Underground pests are the main pests in our country. They occur widely and have many kinds. The most important ones are clam, golden worm, slug and tiger, others are soil maggot, foetida, root stinkbug and so on. Serious in some areas. Underground pests generally damage the roots and stems of plants, which is the main reason for the lack of seedlings and severely damaged victims. Much of the crops were killed such as wheat, corn, sorghum, millet, potato, cotton, hemp, beets, sugarcane, vegetables and tree seedlings. Several underground pests often occur simultaneously in the same area. The main types of underground pests 蝼 蛄: belong to Orthoptera 蝼 蛄 Branch, occurs in our country