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经多年的田间调查和室内繁殖,表明龟纹瓢虫Propylaea japonica(Thunb.)能有效地控制蚜虫的为害。我们于1976～1981年对龟纹瓢虫的生活习性,发生规律和人工饲养等问题作了较系统的观察,意在为利用瓢虫、提高防治效果,提供理论依据。现把结果报告如下。一、方法早春从麦地收集越冬成虫,配对产卵作为当年第一代。由此繁殖以后各代。室内成虫饲养,采用内有白色或淡绿色卵卡纸的玻管,卵卡纸约占管壁面积的1/3;幼虫饲养
After many years of field investigation and indoor breeding, Propylaea japonica (Thunb.) Showed that aphids could be effectively controlled by Propylaea japonica (Thunb.). In 1976 ~ 1981, we made a systematic observation on the habits, regularity and artificial feeding of Propylaea japonica. It is intended to provide a theoretical basis for using ladybugs and improving the control effect. The result is reported below. First, the method Early spring to collect overwintering adult from the corn field, mating spawning as the first generation of the year. Since then breeding generations. Indoor adult feeding, the use of white or light green eggs, cardboard tube, egg cardboard accounts for about 1/3 of the wall area; larvae feeding