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落叶松尺蠖属鳞翅目尺蛾科害虫。以幼虫取食为害落叶松针叶,1979年在我场大宁林区首次发生,1980年为害更为猖獗。被害林分系1956年营造的落叶松纯林。地处山地阴坡、半阴坡,海拔1696—1876米,土壤为典型的黑栗钙土,深厚肥沃、中性偏酸,每亩现存159株,林分平均高为7.5米,胸径在8—16厘米之间,每亩蓄积量为4.68立方米,长势良好。自1979年以来,连续三年遭到落叶松尺蠖的严重危害,面积达742
Larix spp. Lepidoptera moth pests. Larix feeding Larix ginseng, in 1979 in my field Daning forest area occurred for the first time, in 1980 the damage is more rampant. The forest was built in 1956 Larch pure forest. Located in the shady mountain, semi-shady slope, 1696-1876 meters above sea level, the soil is a typical black chestnut soil, rich and fertile, neutral acid, 159 existing per acre, average height of 7.5 m, diameter at 8 Between -16 cm, the volume per acre 4.68 cubic meters, growing well. Since 1979, three consecutive years by the larch riprap serious harm, an area of 742