1957—59年,我们对建庄林区油松球果主要害虫进行了观察和药剂防治试验,现在把它初步总结出来,由于时间和业务水平所限,难免没有错误,希望有关同志多加指导。建庄林区球果害虫主要有两种,一种颜色为黑色(或灰黑色),为数较少;另一种为肉红色(或粉红色),为害很严重。球果被害后,逐渐变成褐色,干燥而坚硬,鳞片及内部果轴、种子等全被食空,而塞满了虫粪和树脂, In 1957-59, we observed and tested the main pests of Pinus tabulaeformis in Jianzhuang Forest Zone. Now we have a preliminary summary of the results. Due to the limited time and business level, it is inevitable that there will be no mistakes. We hope that the relevant comrades will guide more. There are two main types of coniferous pests in Zhuanglin: one is black (or gray-black) and the other is reddish (or pink), and the damage is very serious. After the cones were killed, they gradually turned brown, dry and hard, and scales and internal fruit shafts, seeds and the like were all empty and stuffed with insect excrement and resin,