我国有棉花害虫300多种,河北省棉区需要加强防治的主要害虫有以下几类:一、棉盲蝽蟓河北省棉区主要有绿盲蝽、三点盲蝽、苜蓿盲蝽和中黑盲蝽4种,以绿盲蝽为主。1、为害特点成虫、若虫以刺吸式口器从棉株嫩部位吸取汁液为害。棉花顶部受害,形成无头棉,以后变成多头棉;若幼叶被害,先形成黑色小点,局部组织坏死,随叶子长大,形成破洞;真叶生长点被害, There are more than 300 kinds of cotton pests in our country. The main pests that need to be strengthened in prevention and control of cotton area in Hebei Province are as follows: First, cotton bugs 蟓 棉 The main cotton planthopper in Hebei Province is Apolygus lucidus, Apis mellifera ricinus, Lygus 4 species, the main green bugs. 1, the damage characteristics of adults, nymphs piercing suction mouthparts from the cotton plant tender parts of the juice damage. Cotton top damage, the formation of cotton, then become long cotton; if the young leaves were killed, the first to form a black dot, local tissue necrosis, with the leaves grow up, the formation of holes;