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灰飞虱Laodelphax striatellus属同翅目(Homoptera)蝉亚科(Cicadomorpha)蜡蝉总科(Fulgoroidea)中的飞虱科(Delphacidae),是该总科中种类最多、分布最广(除南极洲外)的一科,广泛分布于东亚、东南亚、欧洲和北美等地。灰飞虱是我国主要粮食作物水稻、小麦、玉米的重要害虫,造成严重减产甚至绝收。1灰飞虱的危害和发生规律1.1灰飞虱的危害灰飞虱能刺吸取食水稻、小麦、大麦、李氏禾和双穗雀稗等多种禾本科植物,其危害表
Laodelphax striatellus is a Delphacidae in the genus Homoptera (Cicadomorpha) of Fulgoroidea. It is the most widely distributed and widely distributed species (except Antarctica) A branch, widely distributed in East Asia, Southeast Asia, Europe and North America and other places. Laodelphax striatellus (L.) is an important pest of rice, wheat and maize, the main food crops in our country, causing serious yield reduction and even absolute failure. 1, the hazards and occurrence of Laodelphax striatellus 1.1 The hazards of Laodelphax striatellus Laodelpha can pierce a variety of grasses, such as rice, wheat, barley,