我局长白落叶松母树林,是长白山林区面积最大、种子产量高、质量好的重要天然母树林基地。但是,由于遭落叶松球果花蝇、球果象鼻虫为害,近年又发生了球果卷叶蛾的为害,造成落叶松种子大量减产。为了掌握长白落叶松球果卷叶蛾的发生、发展规律,找出它的薄弱环节,以便采取有效的防治措施,我们从一九七四年开始进行观察调查。初步结果如下: 一、发生和为害据我们调查,长白落叶松球果害虫,主要有球果花蝇、球果卷叶蛾和球果象鼻虫等三种。其中以球果花蝇和球果卷叶蛾为主,球果象鼻虫为害甚微。从五月中旬至七月中旬,是 I Secretary white Larix wood, is the largest Changbai Mountain forest area, high yield of seeds, good quality of the important natural forest base. However, due to larch conifer fruit fly, coniferous weevil damage in recent years, the occurrence of coniferous leaf roller damage, resulting in large-scale production of larch seeds. In order to grasp the occurrence and development of Larch Dia. Leaf roller moth, find out its weak links in order to take effective control measures, we started from 1974 to observe the investigation. The preliminary results are as follows: First, the occurrence and damage According to our investigation, Larix olgensis pests, the main fruit flies, coniferous roller and coniferous weevil three. Among them, the fruit flies and coniferous leaf roller mainly dominate the weevil weevil little damage. From mid-May to mid-July, yes