落叶松早期落叶病是我国东北三省人工落叶松林的重要病害,危害严重,分布较广。据1964年调查统计,辽宁省落叶松林被害面积占人工落叶松林总面积的62.4%。目前对于该病的防治,各有关部门都非常重视。从1958年开始我省对该病进行了一系列的防治试验研究工作,取得了一定的效果。尤其是1965年在清原县 Larix early deciduous disease is an important disease of Artificial Larix gmelinii forest in the three northeastern provinces of China, with serious damage and widespread distribution. According to the survey in 1964, the area of ​​larch forests in Liaoning Province accounted for 62.4% of the total area of ​​artificial larch forests. Currently for the prevention and treatment of the disease, all departments concerned attach great importance. From 1958 onwards, our province carried out a series of prevention and control experiments on the disease and achieved certain results. Especially in 1965 in Qingyuan County