甘肃省甘谷县麦蚜发生规律研究

STUDIES ON THE OCCURRENCE OF WHEAT APHIDS IN GANGU COUNTY,GANSU PROVINCE

本文根据１９９１－１９９３年甘谷县麦蚜调查研究结果和历史资料，从秋苗蚜量、越冬、春季种群数量消长、越夏和天敌等方面系统地概括了甘谷县麦蚜的发生规律，并对近年来甘谷麦蚜发生重于陇东之原因进行了分析探讨。

According to research results from 1991-1993 and historical information,this papersummarized the occurrence of wheat aphids in Gangu County from numbers of aphids in au-tumn, overwintering,population dynamincs in spring,oversummering and natural enemies,etc,analysed the cause of recent difference between the occurrence levels of wheat aphids inGangu and Eastern Gansu。