螨类由于其个体较小,同时其为害一般伴随粮食的发热、霉变和其他昆虫的为害,加之我国对螨类的防治起步较晚,一般基层单位又不具备鉴别其种类的设备,致使其为害和防治成为一个被人们忽视的问题。1螨类概况螨类种类繁多,形态特殊,栖息场地多样,生活史复杂,与人类经济活动密切相关。全世界已知的螨类有5万余种,为害储藏粮食的粉螨体长只有0.5mm,肉眼不易 Mites because of their smaller, while its damage are generally accompanied by food fever, mildew and other insect damage, combined with our control of mites started later, the general grassroots units do not have the equipment to identify their species, resulting in its Harm and prevention have become neglected issues. 1 mites overview mites species, special morphology, habitat diversity, complex life history, and closely related to human economic activity. There are more than 50,000 species of mites known throughout the world. The body weight of acaroid mites that damage foodstuffs is only 0.5mm.