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祁连县油菜田遭受土虼蚤危害非常严重,主要危害油菜幼苗,取食子叶、顶芽,常常造成缺苗、死苗,严重危害时可造成毁田重播。土虼蚤又称黄跳甲,主要有四种,即黄曲条跳甲,黄直条跳甲、黄窄条跳甲,黄宽条跳甲,都属鞘翅目,叶甲科。其中黄曲条跳甲数量多,危害严重。 1形态特征黄曲条跳甲:成虫体长1.8-2.4mm,椭圆形,黑色有光泽; 触角丝状,第一至第四节暗黄褐色,其余黑褐色,末端数节稍膨大;前胸布满刻点;鞘翅上各有8条纵行小刻点;中央有一肾形
Qilian rape fields suffer from soil mites and fleas is very serious harm, the main damage rape seedlings, feeding on cotyledons, the top bud, often resulting in lack of seedlings, dead seedlings, serious damage can cause harsh field replay. Earthworm flea also known as yellow beetle, there are four main, that is, yellow beetle beetle, yellow beetle beetle, yellow beetle beetle, yellow beetle beetle, are Coleoptera, leaf A Branch. Among them, there are more yellow beetles and more serious damage. 1 morphological characteristics of the yellow beetle jumping armor: adult body length 1.8-2.4mm, oval, black and shiny; antennae filiform, first to the fourth section of dark brown, the remaining dark brown, the end of a few slightly enlarged section; chest Full of carved spots; Cole wings on each of 8 longitudinal small carved point; the central kidney-shaped