白背飞虱Sogatella furcifera(Horváth)是水稻重要害虫之一。其年度间种群数量变动幅度较大,究其原因,除了本地虫口基数、迁入虫量和食料因素外,气候和天敌是影响白背飞虱种群盛衰的重要因素。我们于1970—72年在崇安县和1979—82年在沙县和福州对白背飞虱的种群动态及其与气候因素和天敌因素的关系,进行了初步的调查研究,现将结果报道如下。 White-backed planthopper Sogatella furcifera (Horváth) is one of the major pests in rice. The annual population fluctuates widely, and the reason is that climate and natural enemies are important factors that affect the population decline and population decline of whitebacked planthopper, except for the number of insect population and the number of migrating insects. We conducted a preliminary investigation on the population dynamics of whitebackedbacked planthopper, Sogatella furcifera, and its relationship with climatic and natural enemies in Chong’an County and 1979-82 in 1970-72 and the results reported below.