落叶松早期落叶病(MycosphaerellaIarici-leptolepis K.Ito et K.Sato)是我国北方落叶松的重要病害,分布广,危害严重,已成为目前林业生产上急需解决的课题。根据世界各国对百菌清杀菌剂的研究。东北林学院对新杀菌剂百菌清烟剂进行了研制,同时筛选出百菌清超低容量油剂,经防治落叶松早期落叶病的药效试验,已取得了良好的效果。实践证明,超低容量喷雾油剂防治森林病害,具有工效高、省药、成本 Mycosphaerella Iarici-leptolepis K.Ito et K.Sato is an important disease of Larix principis-rupprechtii in our country. It has a wide distribution and serious harm and has become an urgent problem to be solved in forestry production. According to the world of chlorothalonil fungicides research. Northeast Forestry University of new fungicides chlorothalonil smoke agent was developed at the same time screening of chlorothalonil ultra-low-capacity oil, by the prevention of early larch disease efficacy trials have achieved good results. Practice has proved that ultra-low-volume spray oil control forest disease, with high efficiency, provincial medicine, cost