灰飞虱是水稻条纹叶枯病的传毒介体,发生分布遍及全省,在姚安、易门、大姚、禄丰、昆明等地区发生危害较重,造成损失较大。1982年我们选定易门县梅云大队为基点,在对灰飞虱的年生活史进行系统观察的同时,对田间发生消长规律及危害特点亦进行了调查研究,现将结果报导如下。 Laodelphax striatellus is a virus-transmitted mediator of rice stripe virus. It occurs throughout the province and causes serious damage in areas such as Yao’an, Yimen, Dayao, Lufeng and Kunming, resulting in greater losses. In 1982, we selected the Meiyun Brigade in Yimen County as the starting point. While systematically observing the annual life cycle of the SBPH, we also conducted a survey on the characteristics of the growth and decline in the field. The results are reported as follows.