【摘要】 中纹大蚊(TipulaconjunctaconjunctaAlexander)和谷类大蚊犤Nephrotomascalaristerminalis(Wiedemann)犦在中国北方主要为害水稻、玉米等农作物,近年来有日益严重发生的趋势。为提高对这两种大蚊的测报防治水平,笔者对其成虫、卵、幼虫和蛹的形态特征进行了观察研究。更多还原

【Abstract】 Tipula conjuneta Alexander and Nephrotoma scalaris terminalis mainly infested rice, sorghum, maize and wheat in northern China. In recent years, the infestations of the insects are increasing more and more seriously. Observation on the morphology and biology of the adult, ovum, grub and nymph of the two insects were carried out for the purpose of improving the monitoring and control techniques.更多还原