落叶松鞘蛾在辽宁省长大线以东地区的落叶松林均有不同程度的发生。发生较严重的新宾、本溪等地区的落叶松林,已连续二年被吃光,严重的影响了落叶松的生长发育。由于落叶松鞘蛾是潜食针叶内部,以前没有找到更有效的防治方法。经过我场二年来的防治试验,已初获成功,特简介如下:一、防治时期: Larch sheath moths larch forests in the east of Liaoning Province Governorate have varying degrees of occurrence. More serious Xinbin, Benxi and other areas of larch forests, has been eaten for two consecutive years, a serious impact on the growth and development of larch. Because Larch sheath moths are the inner part of the hypocotyls, no more effective control methods have been found before. After two years of my field prevention and control test, has initially been successful, especially as follows: First, the control period: