地下害虫是农作物苗期主要敌害,种类较多。秋季为害小麦的主要是蝼蛄、蛴螬、金针虫。其中以蝼蛄分布最广。所以,秋季防治,一般地区,应以蝼蛄为重点,结合兼治其它害虫。一、防治蝼蛄蝼蛄是小麦主要地下害虫。小麦播种后和苗期,是蝼蛄在一年中较为集中为害。由于蝼蛄喜食种子、幼根和幼苗,故被害麦田,轻则缺苗断垄,重则毁种,影响增产。一般轻盐碱地及沿河、洼淀低湿地区,土质松软,腐植质多,为害较重。特别在一些耕作粗放的地块发生严重。蝼蛄白天潜伏在土中,夜间活动。在日平均气温15—27℃时,夜间 Underground pests are the main enemy of crops at seedling stage, more types. Fall wheat damage is mainly 蝼 蛄, 蛴 螬, needleworms. Among them, the most widely distributed. Therefore, the fall prevention and control, in general areas, should focus on 蝼,, combined with other pests. First, control 蝼 蛄 蝼 蛄 is the main underground pests of wheat. After sowing and seedling stage of wheat, catfish are more concentrated in the year. As a result of the catfish eating seeds, young roots and seedlings, it is the victim of wheat fields, ranging from lack of seedling broken ridge, while the destruction of species, affecting the increase. Salt and alkali light and the general along the river, low lake wet areas, soil soft, humus and more serious damage. Especially in some extensive cultivation of land serious.蝼 潜 Lurking in the earth during the day and night activities. In the daily average temperature of 15-27 ℃ at night