稻螟蛉Narange aenescens在温州地区近年来曾间歇发生,其发生程度与天敌消长关系密切。螟蛉绒茧蜂Apanteles ruficrus对稻螟蛉与早春麦田的粘虫有良好的控制效果。其蜂茧不仅在水稻上见到,在席草、茭白上也屡见不鲜。新西兰曾从巴基斯坦引进螟蛉绒茧蜂防治玉米粘虫,最近,更用于防治地老虎,均取得良好效果。1981～1982年,作者对螟蛉绒茧蜂生物学和生态学特性进行了研究,现将结果整理如下。材料与方法将上一年冷藏的稻螟蛉蛹在室内羽化后,置于养虫笼内盆栽的水稻上产卵,幼虫饲养2～3龄,选健壮的同龄虫50头为一组,移至幼嫩的盆栽稻苗(品种温选青)上,经适应半天,接蜂3对。每次设5个重复。同龄寄主幼虫经接蜂后24小时,逐日进行解 The rice borer Narange aenescens has intermittently occurred in Wenzhou in recent years, and the degree of its occurrence is closely related to the growth and decline of natural enemies. Apanteles ruficrus has a good control effect on the armyworm of rice stem borers and early spring wheat fields. The bee cocoon is not only seen on rice, but also common in mat grass and bamboo shoots. New Zealand once introduced the stem borers Culex pipiens pallens from Pakistan to control the armyworm, and more recently, it has been used to control the tiger in the land. All achieved good results. From 1981 to 1982, the author studied the biology and ecological characteristics of Chilo suppressalis, and summarized the results as follows. MATERIALS AND METHODS After the chrysalis of the rice borer chilled in the previous year was eclosion in the house, the chrysalis was placed on the potted rice in the cocoon cage for spawning. The larvae were housed 2 to 3 years old. Fifty robust females of the same age were selected and moved to Young potted rice seedlings (variety temperature selected green), adapted to half a day, pick bees 3 pairs. Set up five repetitions at a time. Host larvae of the same age by pick-up after 24 hours, daily solution